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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); |
6b9f68a2 | 15 | use File::Basename; |
5e1267a5 DM |
16 | use File::Path; |
17 | use IO::File; | |
ecbea048 | 18 | use Net::IP; |
1a301a8d | 19 | use PVE::Tools qw(run_command lock_file dir_glob_foreach); |
30c1ae52 | 20 | use Encode; |
ecbea048 | 21 | |
63c91681 | 22 | my $hostfw_conf_filename = "/etc/pve/local/host.fw"; |
21053409 DM |
23 | my $pvefw_conf_dir = "/etc/pve/firewall"; |
24 | my $clusterfw_conf_filename = "$pvefw_conf_dir/cluster.fw"; | |
fca39c2c | 25 | |
fdefeeab | 26 | # dynamically include PVE::QemuServer and PVE::LXC |
d9fee004 DM |
27 | # to avoid dependency problems |
28 | my $have_qemu_server; | |
29 | eval { | |
30 | require PVE::QemuServer; | |
31 | $have_qemu_server = 1; | |
32 | }; | |
33 | ||
3b4882dc AG |
34 | my $have_lxc; |
35 | eval { | |
36 | require PVE::LXC; | |
37 | $have_lxc = 1; | |
38 | }; | |
39 | ||
40 | ||
259db1e6 DM |
41 | my $pve_fw_status_dir = "/var/lib/pve-firewall"; |
42 | ||
43 | mkdir $pve_fw_status_dir; # make sure this exists | |
44 | ||
351052d1 DM |
45 | my $security_group_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; |
46 | my $ipset_name_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; | |
f9792937 | 47 | our $ip_alias_pattern = '[A-Za-z][A-Za-z0-9\-\_]+'; |
351052d1 DM |
48 | |
49 | my $max_alias_name_length = 64; | |
50 | my $max_ipset_name_length = 64; | |
51 | my $max_group_name_length = 20; | |
52 | ||
ae029a88 DM |
53 | PVE::JSONSchema::register_format('IPorCIDR', \&pve_verify_ip_or_cidr); |
54 | sub pve_verify_ip_or_cidr { | |
009ee3ac DM |
55 | my ($cidr, $noerr) = @_; |
56 | ||
70e524eb | 57 | if ($cidr =~ m!^(?:$IPV6RE|$IPV4RE)(/(\d+))?$!) { |
e34d0e58 | 58 | return $cidr if Net::IP->new($cidr); |
7c619bbb DM |
59 | return undef if $noerr; |
60 | die Net::IP::Error() . "\n"; | |
61 | } | |
62 | return undef if $noerr; | |
63 | die "value does not look like a valid IP address or CIDR network\n"; | |
64 | } | |
65 | ||
ae029a88 DM |
66 | PVE::JSONSchema::register_format('IPorCIDRorAlias', \&pve_verify_ip_or_cidr_or_alias); |
67 | sub pve_verify_ip_or_cidr_or_alias { | |
7c619bbb DM |
68 | my ($cidr, $noerr) = @_; |
69 | ||
70 | return if $cidr =~ m/^(?:$ip_alias_pattern)$/; | |
71 | ||
ae029a88 | 72 | return pve_verify_ip_or_cidr($cidr, $noerr); |
009ee3ac DM |
73 | } |
74 | ||
e74a87f5 DM |
75 | PVE::JSONSchema::register_standard_option('ipset-name', { |
76 | description => "IP set name.", | |
77 | type => 'string', | |
351052d1 | 78 | pattern => $ipset_name_pattern, |
387d0ffc | 79 | minLength => 2, |
351052d1 | 80 | maxLength => $max_ipset_name_length, |
387d0ffc DM |
81 | }); |
82 | ||
81d574a7 DM |
83 | PVE::JSONSchema::register_standard_option('pve-fw-alias', { |
84 | description => "Alias name.", | |
85 | type => 'string', | |
351052d1 | 86 | pattern => $ip_alias_pattern, |
81d574a7 | 87 | minLength => 2, |
351052d1 | 88 | maxLength => $max_alias_name_length, |
81d574a7 DM |
89 | }); |
90 | ||
6302c41f DM |
91 | PVE::JSONSchema::register_standard_option('pve-fw-loglevel' => { |
92 | description => "Log level.", | |
e34d0e58 | 93 | type => 'string', |
6302c41f DM |
94 | enum => ['emerg', 'alert', 'crit', 'err', 'warning', 'notice', 'info', 'debug', 'nolog'], |
95 | optional => 1, | |
96 | }); | |
97 | ||
387d0ffc DM |
98 | PVE::JSONSchema::register_standard_option('pve-security-group-name', { |
99 | description => "Security Group name.", | |
100 | type => 'string', | |
44be8ceb | 101 | pattern => $security_group_name_pattern, |
387d0ffc | 102 | minLength => 2, |
351052d1 | 103 | maxLength => $max_group_name_length, |
e74a87f5 | 104 | }); |
009ee3ac | 105 | |
cbb5d6f3 DM |
106 | my $feature_ipset_nomatch = 0; |
107 | eval { | |
108 | my (undef, undef, $release) = POSIX::uname(); | |
109 | if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) { | |
110 | my ($major, $minor) = ($1, $2); | |
111 | $feature_ipset_nomatch = 1 if ($major > 3) || | |
112 | ($major == 3 && $minor >= 7); | |
113 | } | |
114 | ||
115 | }; | |
116 | ||
c8301d63 DM |
117 | my $nodename = PVE::INotify::nodename(); |
118 | ||
06320eb0 DM |
119 | my $pve_fw_lock_filename = "/var/lock/pvefw.lck"; |
120 | ||
56f313f7 | 121 | my $default_log_level = 'nolog'; # avoid logs by default |
2d404ffc DM |
122 | |
123 | my $log_level_hash = { | |
124 | debug => 7, | |
125 | info => 6, | |
126 | notice => 5, | |
127 | warning => 4, | |
128 | err => 3, | |
129 | crit => 2, | |
130 | alert => 1, | |
131 | emerg => 0, | |
132 | }; | |
133 | ||
35d1d6da DM |
134 | # we need to overwrite some macros for ipv6 |
135 | my $pve_ipv6fw_macros = { | |
136 | 'Ping' => [ | |
137 | { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' }, | |
138 | ], | |
b3d75afb WB |
139 | 'NeighborDiscovery' => [ |
140 | "IPv6 neighbor solicitation, neighbor and router advertisement", | |
141 | { action => 'PARAM', proto => 'icmpv6', dport => 'router-advertisement' }, | |
142 | { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-solicitation' }, | |
143 | { action => 'PARAM', proto => 'icmpv6', dport => 'neighbor-advertisement' }, | |
144 | ], | |
35d1d6da DM |
145 | 'Trcrt' => [ |
146 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, | |
147 | { action => 'PARAM', proto => 'icmpv6', dport => 'echo-request' }, | |
148 | ], | |
149 | }; | |
150 | ||
857f62c8 | 151 | # imported/converted from: /usr/share/shorewall/macro.* |
961b4928 | 152 | my $pve_fw_macros = { |
857f62c8 | 153 | 'Amanda' => [ |
ebd54ae9 | 154 | "Amanda Backup", |
857f62c8 DM |
155 | { action => 'PARAM', proto => 'udp', dport => '10080' }, |
156 | { action => 'PARAM', proto => 'tcp', dport => '10080' }, | |
157 | ], | |
158 | 'Auth' => [ | |
ebd54ae9 | 159 | "Auth (identd) traffic", |
857f62c8 DM |
160 | { action => 'PARAM', proto => 'tcp', dport => '113' }, |
161 | ], | |
162 | 'BGP' => [ | |
ebd54ae9 | 163 | "Border Gateway Protocol traffic", |
857f62c8 DM |
164 | { action => 'PARAM', proto => 'tcp', dport => '179' }, |
165 | ], | |
166 | 'BitTorrent' => [ | |
ebd54ae9 | 167 | "BitTorrent traffic for BitTorrent 3.1 and earlier", |
961b4928 | 168 | { action => 'PARAM', proto => 'tcp', dport => '6881:6889' }, |
857f62c8 DM |
169 | { action => 'PARAM', proto => 'udp', dport => '6881' }, |
170 | ], | |
171 | 'BitTorrent32' => [ | |
ebd54ae9 | 172 | "BitTorrent traffic for BitTorrent 3.2 and later", |
857f62c8 DM |
173 | { action => 'PARAM', proto => 'tcp', dport => '6881:6999' }, |
174 | { action => 'PARAM', proto => 'udp', dport => '6881' }, | |
175 | ], | |
06ba9c44 AG |
176 | 'Ceph' => [ |
177 | "Ceph Storage Cluster traffic (Ceph Monitors, OSD & MDS Deamons)", | |
178 | { action => 'PARAM', proto => 'tcp', dport => '6789' }, | |
179 | { action => 'PARAM', proto => 'tcp', dport => '6800:7300' }, | |
180 | ], | |
857f62c8 | 181 | 'CVS' => [ |
ebd54ae9 | 182 | "Concurrent Versions System pserver traffic", |
857f62c8 DM |
183 | { action => 'PARAM', proto => 'tcp', dport => '2401' }, |
184 | ], | |
185 | 'Citrix' => [ | |
ebd54ae9 | 186 | "Citrix/ICA traffic (ICA, ICA Browser, CGP)", |
857f62c8 DM |
187 | { action => 'PARAM', proto => 'tcp', dport => '1494' }, |
188 | { action => 'PARAM', proto => 'udp', dport => '1604' }, | |
189 | { action => 'PARAM', proto => 'tcp', dport => '2598' }, | |
190 | ], | |
191 | 'DAAP' => [ | |
ebd54ae9 | 192 | "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)", |
857f62c8 DM |
193 | { action => 'PARAM', proto => 'tcp', dport => '3689' }, |
194 | { action => 'PARAM', proto => 'udp', dport => '3689' }, | |
195 | ], | |
196 | 'DCC' => [ | |
ebd54ae9 | 197 | "Distributed Checksum Clearinghouse spam filtering mechanism", |
857f62c8 DM |
198 | { action => 'PARAM', proto => 'tcp', dport => '6277' }, |
199 | ], | |
200 | 'DHCPfwd' => [ | |
d2c3266d | 201 | "Forwarded DHCP traffic", |
857f62c8 | 202 | { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' }, |
857f62c8 DM |
203 | ], |
204 | 'DNS' => [ | |
ebd54ae9 | 205 | "Domain Name System traffic (upd and tcp)", |
857f62c8 DM |
206 | { action => 'PARAM', proto => 'udp', dport => '53' }, |
207 | { action => 'PARAM', proto => 'tcp', dport => '53' }, | |
208 | ], | |
209 | 'Distcc' => [ | |
ebd54ae9 | 210 | "Distributed Compiler service", |
857f62c8 DM |
211 | { action => 'PARAM', proto => 'tcp', dport => '3632' }, |
212 | ], | |
857f62c8 | 213 | 'FTP' => [ |
ebd54ae9 | 214 | "File Transfer Protocol", |
857f62c8 DM |
215 | { action => 'PARAM', proto => 'tcp', dport => '21' }, |
216 | ], | |
217 | 'Finger' => [ | |
ebd54ae9 | 218 | "Finger protocol (RFC 742)", |
857f62c8 DM |
219 | { action => 'PARAM', proto => 'tcp', dport => '79' }, |
220 | ], | |
221 | 'GNUnet' => [ | |
ebd54ae9 | 222 | "GNUnet secure peer-to-peer networking traffic", |
857f62c8 DM |
223 | { action => 'PARAM', proto => 'tcp', dport => '2086' }, |
224 | { action => 'PARAM', proto => 'udp', dport => '2086' }, | |
225 | { action => 'PARAM', proto => 'tcp', dport => '1080' }, | |
226 | { action => 'PARAM', proto => 'udp', dport => '1080' }, | |
227 | ], | |
228 | 'GRE' => [ | |
d2c3266d | 229 | "Generic Routing Encapsulation tunneling protocol", |
857f62c8 | 230 | { action => 'PARAM', proto => '47' }, |
857f62c8 DM |
231 | ], |
232 | 'Git' => [ | |
ebd54ae9 | 233 | "Git distributed revision control traffic", |
857f62c8 DM |
234 | { action => 'PARAM', proto => 'tcp', dport => '9418' }, |
235 | ], | |
857f62c8 | 236 | 'HKP' => [ |
ebd54ae9 | 237 | "OpenPGP HTTP keyserver protocol traffic", |
857f62c8 DM |
238 | { action => 'PARAM', proto => 'tcp', dport => '11371' }, |
239 | ], | |
240 | 'HTTP' => [ | |
ebd54ae9 | 241 | "Hypertext Transfer Protocol (WWW)", |
961b4928 DM |
242 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
243 | ], | |
857f62c8 | 244 | 'HTTPS' => [ |
ebd54ae9 | 245 | "Hypertext Transfer Protocol (WWW) over SSL", |
857f62c8 DM |
246 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
247 | ], | |
248 | 'ICPV2' => [ | |
ebd54ae9 | 249 | "Internet Cache Protocol V2 (Squid) traffic", |
857f62c8 DM |
250 | { action => 'PARAM', proto => 'udp', dport => '3130' }, |
251 | ], | |
252 | 'ICQ' => [ | |
ebd54ae9 | 253 | "AOL Instant Messenger traffic", |
857f62c8 DM |
254 | { action => 'PARAM', proto => 'tcp', dport => '5190' }, |
255 | ], | |
256 | 'IMAP' => [ | |
ebd54ae9 | 257 | "Internet Message Access Protocol", |
857f62c8 DM |
258 | { action => 'PARAM', proto => 'tcp', dport => '143' }, |
259 | ], | |
260 | 'IMAPS' => [ | |
ebd54ae9 | 261 | "Internet Message Access Protocol over SSL", |
857f62c8 DM |
262 | { action => 'PARAM', proto => 'tcp', dport => '993' }, |
263 | ], | |
264 | 'IPIP' => [ | |
d2c3266d | 265 | "IPIP capsulation traffic", |
857f62c8 | 266 | { action => 'PARAM', proto => '94' }, |
857f62c8 | 267 | ], |
857f62c8 | 268 | 'IPsec' => [ |
d2c3266d | 269 | "IPsec traffic", |
857f62c8 DM |
270 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
271 | { action => 'PARAM', proto => '50' }, | |
857f62c8 DM |
272 | ], |
273 | 'IPsecah' => [ | |
d2c3266d | 274 | "IPsec authentication (AH) traffic", |
857f62c8 DM |
275 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
276 | { action => 'PARAM', proto => '51' }, | |
857f62c8 DM |
277 | ], |
278 | 'IPsecnat' => [ | |
d2c3266d | 279 | "IPsec traffic and Nat-Traversal", |
857f62c8 DM |
280 | { action => 'PARAM', proto => 'udp', dport => '500' }, |
281 | { action => 'PARAM', proto => 'udp', dport => '4500' }, | |
282 | { action => 'PARAM', proto => '50' }, | |
857f62c8 DM |
283 | ], |
284 | 'IRC' => [ | |
ebd54ae9 | 285 | "Internet Relay Chat traffic", |
857f62c8 DM |
286 | { action => 'PARAM', proto => 'tcp', dport => '6667' }, |
287 | ], | |
857f62c8 | 288 | 'Jetdirect' => [ |
ebd54ae9 | 289 | "HP Jetdirect printing", |
857f62c8 DM |
290 | { action => 'PARAM', proto => 'tcp', dport => '9100' }, |
291 | ], | |
292 | 'L2TP' => [ | |
ebd54ae9 | 293 | "Layer 2 Tunneling Protocol traffic", |
857f62c8 | 294 | { action => 'PARAM', proto => 'udp', dport => '1701' }, |
857f62c8 DM |
295 | ], |
296 | 'LDAP' => [ | |
ebd54ae9 | 297 | "Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
298 | { action => 'PARAM', proto => 'tcp', dport => '389' }, |
299 | ], | |
300 | 'LDAPS' => [ | |
ebd54ae9 | 301 | "Secure Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
302 | { action => 'PARAM', proto => 'tcp', dport => '636' }, |
303 | ], | |
304 | 'MSNP' => [ | |
ebd54ae9 | 305 | "Microsoft Notification Protocol", |
857f62c8 DM |
306 | { action => 'PARAM', proto => 'tcp', dport => '1863' }, |
307 | ], | |
308 | 'MSSQL' => [ | |
ebd54ae9 | 309 | "Microsoft SQL Server", |
857f62c8 DM |
310 | { action => 'PARAM', proto => 'tcp', dport => '1433' }, |
311 | ], | |
312 | 'Mail' => [ | |
ebd54ae9 | 313 | "Mail traffic (SMTP, SMTPS, Submission)", |
857f62c8 DM |
314 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
315 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
316 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
317 | ], | |
318 | 'Munin' => [ | |
ebd54ae9 | 319 | "Munin networked resource monitoring traffic", |
857f62c8 DM |
320 | { action => 'PARAM', proto => 'tcp', dport => '4949' }, |
321 | ], | |
322 | 'MySQL' => [ | |
ebd54ae9 | 323 | "MySQL server", |
857f62c8 DM |
324 | { action => 'PARAM', proto => 'tcp', dport => '3306' }, |
325 | ], | |
326 | 'NNTP' => [ | |
ebd54ae9 | 327 | "NNTP traffic (Usenet).", |
857f62c8 DM |
328 | { action => 'PARAM', proto => 'tcp', dport => '119' }, |
329 | ], | |
330 | 'NNTPS' => [ | |
ebd54ae9 | 331 | "Encrypted NNTP traffic (Usenet)", |
857f62c8 DM |
332 | { action => 'PARAM', proto => 'tcp', dport => '563' }, |
333 | ], | |
334 | 'NTP' => [ | |
ebd54ae9 | 335 | "Network Time Protocol (ntpd)", |
857f62c8 DM |
336 | { action => 'PARAM', proto => 'udp', dport => '123' }, |
337 | ], | |
857f62c8 | 338 | 'OSPF' => [ |
ebd54ae9 | 339 | "OSPF multicast traffic", |
857f62c8 DM |
340 | { action => 'PARAM', proto => '89' }, |
341 | ], | |
342 | 'OpenVPN' => [ | |
ebd54ae9 | 343 | "OpenVPN traffic", |
857f62c8 DM |
344 | { action => 'PARAM', proto => 'udp', dport => '1194' }, |
345 | ], | |
346 | 'PCA' => [ | |
ebd54ae9 | 347 | "Symantec PCAnywere (tm)", |
857f62c8 DM |
348 | { action => 'PARAM', proto => 'udp', dport => '5632' }, |
349 | { action => 'PARAM', proto => 'tcp', dport => '5631' }, | |
350 | ], | |
351 | 'POP3' => [ | |
ebd54ae9 | 352 | "POP3 traffic", |
857f62c8 DM |
353 | { action => 'PARAM', proto => 'tcp', dport => '110' }, |
354 | ], | |
355 | 'POP3S' => [ | |
ebd54ae9 | 356 | "Encrypted POP3 traffic", |
857f62c8 DM |
357 | { action => 'PARAM', proto => 'tcp', dport => '995' }, |
358 | ], | |
359 | 'PPtP' => [ | |
ebd54ae9 | 360 | "Point-to-Point Tunneling Protocol", |
857f62c8 | 361 | { action => 'PARAM', proto => '47' }, |
857f62c8 DM |
362 | { action => 'PARAM', proto => 'tcp', dport => '1723' }, |
363 | ], | |
364 | 'Ping' => [ | |
ebd54ae9 | 365 | "ICMP echo request", |
269d4f13 | 366 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
367 | ], |
368 | 'PostgreSQL' => [ | |
ebd54ae9 | 369 | "PostgreSQL server", |
857f62c8 DM |
370 | { action => 'PARAM', proto => 'tcp', dport => '5432' }, |
371 | ], | |
372 | 'Printer' => [ | |
ebd54ae9 | 373 | "Line Printer protocol printing", |
857f62c8 DM |
374 | { action => 'PARAM', proto => 'tcp', dport => '515' }, |
375 | ], | |
376 | 'RDP' => [ | |
ebd54ae9 | 377 | "Microsoft Remote Desktop Protocol traffic", |
857f62c8 DM |
378 | { action => 'PARAM', proto => 'tcp', dport => '3389' }, |
379 | ], | |
d2c3266d | 380 | 'RIP' => [ |
ebd54ae9 | 381 | "Routing Information Protocol (bidirectional)", |
857f62c8 | 382 | { action => 'PARAM', proto => 'udp', dport => '520' }, |
857f62c8 DM |
383 | ], |
384 | 'RNDC' => [ | |
ebd54ae9 | 385 | "BIND remote management protocol", |
857f62c8 DM |
386 | { action => 'PARAM', proto => 'tcp', dport => '953' }, |
387 | ], | |
388 | 'Razor' => [ | |
ebd54ae9 | 389 | "Razor Antispam System", |
857f62c8 DM |
390 | { action => 'ACCEPT', proto => 'tcp', dport => '2703' }, |
391 | ], | |
392 | 'Rdate' => [ | |
ebd54ae9 | 393 | "Remote time retrieval (rdate)", |
857f62c8 DM |
394 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
395 | ], | |
396 | 'Rsync' => [ | |
ebd54ae9 | 397 | "Rsync server", |
857f62c8 DM |
398 | { action => 'PARAM', proto => 'tcp', dport => '873' }, |
399 | ], | |
400 | 'SANE' => [ | |
ebd54ae9 | 401 | "SANE network scanning", |
857f62c8 DM |
402 | { action => 'PARAM', proto => 'tcp', dport => '6566' }, |
403 | ], | |
404 | 'SMB' => [ | |
ebd54ae9 | 405 | "Microsoft SMB traffic", |
857f62c8 DM |
406 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, |
407 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
408 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
409 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
410 | ], | |
857f62c8 | 411 | 'SMBswat' => [ |
ebd54ae9 | 412 | "Samba Web Administration Tool", |
857f62c8 DM |
413 | { action => 'PARAM', proto => 'tcp', dport => '901' }, |
414 | ], | |
415 | 'SMTP' => [ | |
ebd54ae9 | 416 | "Simple Mail Transfer Protocol", |
857f62c8 DM |
417 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
418 | ], | |
419 | 'SMTPS' => [ | |
ebd54ae9 | 420 | "Encrypted Simple Mail Transfer Protocol", |
857f62c8 DM |
421 | { action => 'PARAM', proto => 'tcp', dport => '465' }, |
422 | ], | |
423 | 'SNMP' => [ | |
ebd54ae9 | 424 | "Simple Network Management Protocol", |
857f62c8 DM |
425 | { action => 'PARAM', proto => 'udp', dport => '161:162' }, |
426 | { action => 'PARAM', proto => 'tcp', dport => '161' }, | |
427 | ], | |
428 | 'SPAMD' => [ | |
ebd54ae9 | 429 | "Spam Assassin SPAMD traffic", |
857f62c8 DM |
430 | { action => 'PARAM', proto => 'tcp', dport => '783' }, |
431 | ], | |
432 | 'SSH' => [ | |
ebd54ae9 | 433 | "Secure shell traffic", |
857f62c8 DM |
434 | { action => 'PARAM', proto => 'tcp', dport => '22' }, |
435 | ], | |
436 | 'SVN' => [ | |
ebd54ae9 | 437 | "Subversion server (svnserve)", |
857f62c8 DM |
438 | { action => 'PARAM', proto => 'tcp', dport => '3690' }, |
439 | ], | |
440 | 'SixXS' => [ | |
ebd54ae9 | 441 | "SixXS IPv6 Deployment and Tunnel Broker", |
857f62c8 DM |
442 | { action => 'PARAM', proto => 'tcp', dport => '3874' }, |
443 | { action => 'PARAM', proto => 'udp', dport => '3740' }, | |
444 | { action => 'PARAM', proto => '41' }, | |
445 | { action => 'PARAM', proto => 'udp', dport => '5072,8374' }, | |
446 | ], | |
447 | 'Squid' => [ | |
ebd54ae9 | 448 | "Squid web proxy traffic", |
857f62c8 DM |
449 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, |
450 | ], | |
451 | 'Submission' => [ | |
ebd54ae9 | 452 | "Mail message submission traffic", |
857f62c8 DM |
453 | { action => 'PARAM', proto => 'tcp', dport => '587' }, |
454 | ], | |
455 | 'Syslog' => [ | |
ebd54ae9 | 456 | "Syslog protocol (RFC 5424) traffic", |
857f62c8 DM |
457 | { action => 'PARAM', proto => 'udp', dport => '514' }, |
458 | { action => 'PARAM', proto => 'tcp', dport => '514' }, | |
459 | ], | |
460 | 'TFTP' => [ | |
ebd54ae9 | 461 | "Trivial File Transfer Protocol traffic", |
857f62c8 DM |
462 | { action => 'PARAM', proto => 'udp', dport => '69' }, |
463 | ], | |
464 | 'Telnet' => [ | |
ebd54ae9 | 465 | "Telnet traffic", |
857f62c8 DM |
466 | { action => 'PARAM', proto => 'tcp', dport => '23' }, |
467 | ], | |
468 | 'Telnets' => [ | |
ebd54ae9 | 469 | "Telnet over SSL", |
857f62c8 DM |
470 | { action => 'PARAM', proto => 'tcp', dport => '992' }, |
471 | ], | |
472 | 'Time' => [ | |
ebd54ae9 | 473 | "RFC 868 Time protocol", |
857f62c8 DM |
474 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
475 | ], | |
476 | 'Trcrt' => [ | |
ebd54ae9 | 477 | "Traceroute (for up to 30 hops) traffic", |
857f62c8 | 478 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, |
269d4f13 | 479 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
480 | ], |
481 | 'VNC' => [ | |
93be4333 DM |
482 | "VNC traffic for VNC display's 0 - 99", |
483 | { action => 'PARAM', proto => 'tcp', dport => '5900:5999' }, | |
857f62c8 DM |
484 | ], |
485 | 'VNCL' => [ | |
ebd54ae9 | 486 | "VNC traffic from Vncservers to Vncviewers in listen mode", |
857f62c8 DM |
487 | { action => 'PARAM', proto => 'tcp', dport => '5500' }, |
488 | ], | |
489 | 'Web' => [ | |
ebd54ae9 | 490 | "WWW traffic (HTTP and HTTPS)", |
857f62c8 | 491 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
961b4928 DM |
492 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
493 | ], | |
857f62c8 | 494 | 'Webcache' => [ |
ebd54ae9 | 495 | "Web Cache/Proxy traffic (port 8080)", |
857f62c8 DM |
496 | { action => 'PARAM', proto => 'tcp', dport => '8080' }, |
497 | ], | |
498 | 'Webmin' => [ | |
ebd54ae9 | 499 | "Webmin traffic", |
857f62c8 DM |
500 | { action => 'PARAM', proto => 'tcp', dport => '10000' }, |
501 | ], | |
502 | 'Whois' => [ | |
ebd54ae9 | 503 | "Whois (nicname, RFC 3912) traffic", |
857f62c8 DM |
504 | { action => 'PARAM', proto => 'tcp', dport => '43' }, |
505 | ], | |
961b4928 DM |
506 | }; |
507 | ||
508 | my $pve_fw_parsed_macros; | |
ebd54ae9 | 509 | my $pve_fw_macro_descr; |
21a18e53 | 510 | my $pve_fw_macro_ipversion = {}; |
961b4928 | 511 | my $pve_fw_preferred_macro_names = {}; |
3a616aa0 | 512 | |
5547adf7 AD |
513 | my $pve_std_chains = {}; |
514 | $pve_std_chains->{4} = { | |
d8f2505e DM |
515 | 'PVEFW-SET-ACCEPT-MARK' => [ |
516 | "-j MARK --set-mark 1", | |
517 | ], | |
79929d9c DM |
518 | 'PVEFW-DropBroadcast' => [ |
519 | # same as shorewall 'Broadcast' | |
520 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
521 | # we can use this to reduce logging | |
522 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
523 | { action => 'DROP', dsttype => 'MULTICAST' }, | |
524 | { action => 'DROP', dsttype => 'ANYCAST' }, | |
cbb5d6f3 | 525 | { action => 'DROP', dest => '224.0.0.0/4' }, |
79929d9c DM |
526 | ], |
527 | 'PVEFW-reject' => [ | |
528 | # same as shorewall 'reject' | |
529 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
cbb5d6f3 | 530 | { action => 'DROP', source => '224.0.0.0/4' }, |
79929d9c DM |
531 | { action => 'DROP', proto => 'icmp' }, |
532 | "-p tcp -j REJECT --reject-with tcp-reset", | |
533 | "-p udp -j REJECT --reject-with icmp-port-unreachable", | |
534 | "-p icmp -j REJECT --reject-with icmp-host-unreachable", | |
535 | "-j REJECT --reject-with icmp-host-prohibited", | |
536 | ], | |
537 | 'PVEFW-Drop' => [ | |
cbb5d6f3 | 538 | # same as shorewall 'Drop', which is equal to DROP, |
79929d9c DM |
539 | # but REJECT/DROP some packages to reduce logging, |
540 | # and ACCEPT critical ICMP types | |
541 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
542 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
543 | { action => 'PVEFW-DropBroadcast' }, | |
544 | # ACCEPT critical ICMP types | |
545 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
546 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
547 | # Drop packets with INVALID state | |
548 | "-m conntrack --ctstate INVALID -j DROP", | |
549 | # Drop Microsoft SMB noise | |
550 | { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
551 | { action => 'DROP', proto => 'udp', dport => '137:139'}, | |
552 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
553 | { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
554 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
555 | # Drop new/NotSyn traffic so that it doesn't get logged | |
556 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
557 | # Drop DNS replies | |
558 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
559 | ], | |
560 | 'PVEFW-Reject' => [ | |
cbb5d6f3 | 561 | # same as shorewall 'Reject', which is equal to Reject, |
79929d9c DM |
562 | # but REJECT/DROP some packages to reduce logging, |
563 | # and ACCEPT critical ICMP types | |
564 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
565 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
566 | { action => 'PVEFW-DropBroadcast' }, | |
567 | # ACCEPT critical ICMP types | |
568 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
569 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
570 | # Drop packets with INVALID state | |
571 | "-m conntrack --ctstate INVALID -j DROP", | |
572 | # Drop Microsoft SMB noise | |
573 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
574 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, | |
575 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
576 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
577 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
578 | # Drop new/NotSyn traffic so that it doesn't get logged | |
579 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
580 | # Drop DNS replies | |
581 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
582 | ], | |
d86659ef DM |
583 | 'PVEFW-tcpflags' => [ |
584 | # same as shorewall tcpflags action. | |
585 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
586 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags", | |
587 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags", | |
588 | "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags", | |
589 | "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags", | |
590 | "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags", | |
591 | ], | |
bee633ab DM |
592 | 'PVEFW-smurfs' => [ |
593 | # same as shorewall smurfs action | |
594 | # Filter packets for smurfs (packets with a broadcast address as the source). | |
32cbd582 | 595 | "-s 0.0.0.0/32 -j RETURN", # allow DHCP |
bee633ab DM |
596 | "-m addrtype --src-type BROADCAST -g PVEFW-smurflog", |
597 | "-s 224.0.0.0/4 -g PVEFW-smurflog", | |
598 | ], | |
d8f2505e DM |
599 | }; |
600 | ||
47a79ff2 AD |
601 | $pve_std_chains->{6} = { |
602 | 'PVEFW-SET-ACCEPT-MARK' => [ | |
603 | "-j MARK --set-mark 1", | |
604 | ], | |
605 | 'PVEFW-DropBroadcast' => [ | |
606 | # same as shorewall 'Broadcast' | |
607 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
608 | # we can use this to reduce logging | |
609 | #{ action => 'DROP', dsttype => 'BROADCAST' }, #no broadcast in ipv6 | |
649cd835 DM |
610 | # ipv6 addrtype does not work with kernel 2.6.32 |
611 | #{ action => 'DROP', dsttype => 'MULTICAST' }, | |
612 | #{ action => 'DROP', dsttype => 'ANYCAST' }, | |
613 | { action => 'DROP', dest => 'ff00::/8' }, | |
47a79ff2 AD |
614 | #{ action => 'DROP', dest => '224.0.0.0/4' }, |
615 | ], | |
616 | 'PVEFW-reject' => [ | |
617 | # same as shorewall 'reject' | |
618 | #{ action => 'DROP', dsttype => 'BROADCAST' }, | |
619 | #{ action => 'DROP', source => '224.0.0.0/4' }, | |
649cd835 | 620 | { action => 'DROP', proto => 'icmpv6' }, |
47a79ff2 AD |
621 | "-p tcp -j REJECT --reject-with tcp-reset", |
622 | #"-p udp -j REJECT --reject-with icmp-port-unreachable", | |
623 | #"-p icmp -j REJECT --reject-with icmp-host-unreachable", | |
624 | #"-j REJECT --reject-with icmp-host-prohibited", | |
625 | ], | |
626 | 'PVEFW-Drop' => [ | |
627 | # same as shorewall 'Drop', which is equal to DROP, | |
628 | # but REJECT/DROP some packages to reduce logging, | |
629 | # and ACCEPT critical ICMP types | |
649cd835 | 630 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' |
47a79ff2 AD |
631 | # we are not interested in BROADCAST/MULTICAST/ANYCAST |
632 | { action => 'PVEFW-DropBroadcast' }, | |
633 | # ACCEPT critical ICMP types | |
634 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' }, | |
635 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' }, | |
636 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' }, | |
637 | ||
638 | # Drop packets with INVALID state | |
639 | "-m conntrack --ctstate INVALID -j DROP", | |
640 | # Drop Microsoft SMB noise | |
649cd835 DM |
641 | { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 }, |
642 | { action => 'DROP', proto => 'udp', dport => '137:139'}, | |
643 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
644 | { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
645 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
47a79ff2 AD |
646 | # Drop new/NotSyn traffic so that it doesn't get logged |
647 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
648 | # Drop DNS replies | |
649cd835 | 649 | { action => 'DROP', proto => 'udp', sport => 53 }, |
47a79ff2 AD |
650 | ], |
651 | 'PVEFW-Reject' => [ | |
652 | # same as shorewall 'Reject', which is equal to Reject, | |
653 | # but REJECT/DROP some packages to reduce logging, | |
654 | # and ACCEPT critical ICMP types | |
655 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
656 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
657 | { action => 'PVEFW-DropBroadcast' }, | |
658 | # ACCEPT critical ICMP types | |
659 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'destination-unreachable' }, | |
660 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'time-exceeded' }, | |
661 | { action => 'ACCEPT', proto => 'icmpv6', dport => 'packet-too-big' }, | |
662 | ||
663 | # Drop packets with INVALID state | |
664 | "-m conntrack --ctstate INVALID -j DROP", | |
665 | # Drop Microsoft SMB noise | |
666 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
667 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, | |
668 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
669 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
670 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
671 | # Drop new/NotSyn traffic so that it doesn't get logged | |
672 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
673 | # Drop DNS replies | |
674 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
675 | ], | |
676 | 'PVEFW-tcpflags' => [ | |
677 | # same as shorewall tcpflags action. | |
678 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
679 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags", | |
680 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags", | |
681 | "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags", | |
682 | "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags", | |
683 | "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags", | |
684 | ], | |
47a79ff2 AD |
685 | }; |
686 | ||
4b586518 DM |
687 | # iptables -p icmp -h |
688 | my $icmp_type_names = { | |
689 | any => 1, | |
690 | 'echo-reply' => 1, | |
691 | 'destination-unreachable' => 1, | |
692 | 'network-unreachable' => 1, | |
693 | 'host-unreachable' => 1, | |
694 | 'protocol-unreachable' => 1, | |
695 | 'port-unreachable' => 1, | |
696 | 'fragmentation-needed' => 1, | |
697 | 'source-route-failed' => 1, | |
698 | 'network-unknown' => 1, | |
699 | 'host-unknown' => 1, | |
700 | 'network-prohibited' => 1, | |
701 | 'host-prohibited' => 1, | |
702 | 'TOS-network-unreachable' => 1, | |
703 | 'TOS-host-unreachable' => 1, | |
704 | 'communication-prohibited' => 1, | |
705 | 'host-precedence-violation' => 1, | |
706 | 'precedence-cutoff' => 1, | |
707 | 'source-quench' => 1, | |
708 | 'redirect' => 1, | |
709 | 'network-redirect' => 1, | |
710 | 'host-redirect' => 1, | |
711 | 'TOS-network-redirect' => 1, | |
712 | 'TOS-host-redirect' => 1, | |
713 | 'echo-request' => 1, | |
714 | 'router-advertisement' => 1, | |
715 | 'router-solicitation' => 1, | |
716 | 'time-exceeded' => 1, | |
717 | 'ttl-zero-during-transit' => 1, | |
718 | 'ttl-zero-during-reassembly' => 1, | |
719 | 'parameter-problem' => 1, | |
720 | 'ip-header-bad' => 1, | |
721 | 'required-option-missing' => 1, | |
722 | 'timestamp-request' => 1, | |
723 | 'timestamp-reply' => 1, | |
724 | 'address-mask-request' => 1, | |
725 | 'address-mask-reply' => 1, | |
726 | }; | |
727 | ||
041b9277 DM |
728 | # ip6tables -p icmpv6 -h |
729 | ||
730 | my $icmpv6_type_names = { | |
731 | 'any' => 1, | |
732 | 'destination-unreachable' => 1, | |
733 | 'no-route' => 1, | |
734 | 'communication-prohibited' => 1, | |
735 | 'address-unreachable' => 1, | |
736 | 'port-unreachable' => 1, | |
737 | 'packet-too-big' => 1, | |
738 | 'time-exceeded' => 1, | |
739 | 'ttl-zero-during-transit' => 1, | |
740 | 'ttl-zero-during-reassembly' => 1, | |
741 | 'parameter-problem' => 1, | |
742 | 'bad-header' => 1, | |
743 | 'unknown-header-type' => 1, | |
744 | 'unknown-option' => 1, | |
745 | 'echo-request' => 1, | |
746 | 'echo-reply' => 1, | |
747 | 'router-solicitation' => 1, | |
748 | 'router-advertisement' => 1, | |
593604cc | 749 | 'neighbor-solicitation' => 1, |
041b9277 | 750 | 'neighbour-solicitation' => 1, |
593604cc | 751 | 'neighbor-advertisement' => 1, |
041b9277 DM |
752 | 'neighbour-advertisement' => 1, |
753 | 'redirect' => 1, | |
754 | }; | |
755 | ||
54cd19a8 | 756 | sub init_firewall_macros { |
6158271d | 757 | |
961b4928 | 758 | $pve_fw_parsed_macros = {}; |
9aab3127 | 759 | |
21a18e53 WB |
760 | my $parse = sub { |
761 | my ($k, $macro) = @_; | |
e5076eee | 762 | my $lc_name = lc($k); |
21a18e53 WB |
763 | $pve_fw_macro_ipversion->{$k} = 0; |
764 | while (!ref($macro->[0])) { | |
765 | my $desc = shift @$macro; | |
766 | if ($desc eq 'ipv4only') { | |
767 | $pve_fw_macro_ipversion->{$k} = 4; | |
768 | } elsif ($desc eq 'ipv6only') { | |
769 | $pve_fw_macro_ipversion->{$k} = 6; | |
770 | } else { | |
771 | $pve_fw_macro_descr->{$k} = $desc; | |
772 | } | |
ebd54ae9 | 773 | } |
e5076eee DM |
774 | $pve_fw_preferred_macro_names->{$lc_name} = $k; |
775 | $pve_fw_parsed_macros->{$k} = $macro; | |
21a18e53 WB |
776 | }; |
777 | ||
778 | foreach my $k (keys %$pve_fw_macros) { | |
779 | &$parse($k, $pve_fw_macros->{$k}); | |
780 | } | |
781 | ||
782 | foreach my $k (keys %$pve_ipv6fw_macros) { | |
783 | next if $pve_fw_parsed_macros->{$k}; | |
784 | &$parse($k, $pve_ipv6fw_macros->{$k}); | |
785 | $pve_fw_macro_ipversion->{$k} = 6; | |
961b4928 | 786 | } |
9aab3127 DM |
787 | } |
788 | ||
54cd19a8 DM |
789 | init_firewall_macros(); |
790 | ||
ebd54ae9 DM |
791 | sub get_macros { |
792 | return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros; | |
793 | } | |
794 | ||
fcba0beb DM |
795 | my $etc_services; |
796 | ||
797 | sub get_etc_services { | |
798 | ||
799 | return $etc_services if $etc_services; | |
800 | ||
801 | my $filename = "/etc/services"; | |
802 | ||
803 | my $fh = IO::File->new($filename, O_RDONLY); | |
804 | if (!$fh) { | |
805 | warn "unable to read '$filename' - $!\n"; | |
806 | return {}; | |
807 | } | |
808 | ||
809 | my $services = {}; | |
810 | ||
811 | while (my $line = <$fh>) { | |
812 | chomp ($line); | |
813 | next if $line =~m/^#/; | |
814 | next if ($line =~m/^\s*$/); | |
815 | ||
816 | if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) { | |
817 | $services->{byid}->{$2}->{name} = $1; | |
35b66e9d | 818 | $services->{byid}->{$2}->{port} = $2; |
fcba0beb DM |
819 | $services->{byid}->{$2}->{$3} = 1; |
820 | $services->{byname}->{$1} = $services->{byid}->{$2}; | |
821 | } | |
822 | } | |
823 | ||
824 | close($fh); | |
825 | ||
6158271d DM |
826 | $etc_services = $services; |
827 | ||
3a616aa0 | 828 | |
fcba0beb DM |
829 | return $etc_services; |
830 | } | |
831 | ||
832 | my $etc_protocols; | |
833 | ||
834 | sub get_etc_protocols { | |
835 | return $etc_protocols if $etc_protocols; | |
836 | ||
837 | my $filename = "/etc/protocols"; | |
838 | ||
839 | my $fh = IO::File->new($filename, O_RDONLY); | |
840 | if (!$fh) { | |
841 | warn "unable to read '$filename' - $!\n"; | |
842 | return {}; | |
843 | } | |
844 | ||
845 | my $protocols = {}; | |
846 | ||
847 | while (my $line = <$fh>) { | |
848 | chomp ($line); | |
849 | next if $line =~m/^#/; | |
850 | next if ($line =~m/^\s*$/); | |
851 | ||
852 | if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) { | |
853 | $protocols->{byid}->{$2}->{name} = $1; | |
854 | $protocols->{byname}->{$1} = $protocols->{byid}->{$2}; | |
855 | } | |
856 | } | |
857 | ||
858 | close($fh); | |
859 | ||
041b9277 DM |
860 | # add special case for ICMP v6 |
861 | $protocols->{byid}->{icmpv6}->{name} = "icmpv6"; | |
862 | $protocols->{byname}->{icmpv6} = $protocols->{byid}->{icmpv6}; | |
863 | ||
fcba0beb DM |
864 | $etc_protocols = $protocols; |
865 | ||
866 | return $etc_protocols; | |
867 | } | |
868 | ||
525778d7 | 869 | my $ipv4_mask_hash_localnet = { |
93be4333 DM |
870 | '255.255.0.0' => 16, |
871 | '255.255.128.0' => 17, | |
872 | '255.255.192.0' => 18, | |
873 | '255.255.224.0' => 19, | |
874 | '255.255.240.0' => 20, | |
875 | '255.255.248.0' => 21, | |
876 | '255.255.252.0' => 22, | |
877 | '255.255.254.0' => 23, | |
878 | '255.255.255.0' => 24, | |
879 | '255.255.255.128' => 25, | |
880 | '255.255.255.192' => 26, | |
881 | '255.255.255.224' => 27, | |
882 | '255.255.255.240' => 28, | |
883 | '255.255.255.248' => 29, | |
884 | '255.255.255.252' => 30, | |
885 | }; | |
886 | ||
525778d7 | 887 | my $__local_network; |
93be4333 | 888 | |
525778d7 | 889 | sub local_network { |
ac633d30 | 890 | my ($new_value) = @_; |
93be4333 | 891 | |
525778d7 | 892 | $__local_network = $new_value if defined($new_value); |
ac633d30 | 893 | |
525778d7 | 894 | return $__local_network if defined($__local_network); |
93be4333 DM |
895 | |
896 | eval { | |
897 | my $nodename = PVE::INotify::nodename(); | |
898 | ||
899 | my $ip = PVE::Cluster::remote_node_ip($nodename); | |
900 | ||
901 | my $testip = Net::IP->new($ip); | |
bfc488f6 | 902 | |
5dc356af WB |
903 | my $isv6 = $testip->version == 6; |
904 | my $routes = $isv6 ? PVE::ProcFSTools::read_proc_net_ipv6_route() | |
905 | : PVE::ProcFSTools::read_proc_net_route(); | |
93be4333 | 906 | foreach my $entry (@$routes) { |
5dc356af WB |
907 | my $mask; |
908 | if ($isv6) { | |
909 | $mask = $entry->{prefix}; | |
910 | } else { | |
911 | $mask = $ipv4_mask_hash_localnet->{$entry->{mask}}; | |
912 | next if !defined($mask); | |
913 | } | |
93be4333 DM |
914 | my $cidr = "$entry->{dest}/$mask"; |
915 | my $testnet = Net::IP->new($cidr); | |
5dc356af | 916 | if ($testnet->overlaps($testip) == $Net::IP::IP_B_IN_A_OVERLAP) { |
525778d7 | 917 | $__local_network = $cidr; |
93be4333 DM |
918 | return; |
919 | } | |
920 | } | |
921 | }; | |
922 | warn $@ if $@; | |
923 | ||
525778d7 | 924 | return $__local_network; |
93be4333 DM |
925 | } |
926 | ||
6d959e3f DM |
927 | # ipset names are limited to 31 characters, |
928 | # and we use '-v4' or '-v6' to indicate IP versions, | |
929 | # and we use '_swap' suffix for atomic update, | |
930 | # for example PVEFW-${VMID}-${ipset_name}_swap | |
30150dca | 931 | |
88c26d5e | 932 | my $max_iptables_ipset_name_length = 31 - length("PVEFW-") - length("_swap"); |
708ba714 DM |
933 | |
934 | sub compute_ipset_chain_name { | |
88c26d5e | 935 | my ($vmid, $ipset_name, $ipversion) = @_; |
708ba714 DM |
936 | |
937 | $vmid = 0 if !defined($vmid); | |
938 | ||
88c26d5e | 939 | my $id = "$vmid-${ipset_name}-v$ipversion"; |
708ba714 | 940 | |
88c26d5e | 941 | if (length($id) > $max_iptables_ipset_name_length) { |
708ba714 DM |
942 | $id = PVE::Tools::fnv31a_hex($id); |
943 | } | |
944 | ||
945 | return "PVEFW-$id"; | |
946 | } | |
947 | ||
b692f42c DM |
948 | sub compute_ipfilter_ipset_name { |
949 | my ($iface) = @_; | |
950 | ||
951 | return "ipfilter-$iface"; | |
952 | } | |
953 | ||
ecbea048 DM |
954 | sub parse_address_list { |
955 | my ($str) = @_; | |
956 | ||
e2c62733 DM |
957 | if ($str =~ m/^(\+)(\S+)$/) { # ipset ref |
958 | die "ipset name too long\n" if length($str) > ($max_ipset_name_length + 1); | |
959 | return; | |
960 | } | |
961 | ||
962 | if ($str =~ m/^${ip_alias_pattern}$/) { | |
963 | die "alias name too long\n" if length($str) > $max_alias_name_length; | |
964 | return; | |
965 | } | |
d72beb8e | 966 | |
3162af6b DM |
967 | my $count = 0; |
968 | my $iprange = 0; | |
a589b6ac | 969 | my $ipversion; |
7697c041 | 970 | |
3162af6b DM |
971 | foreach my $elem (split(/,/, $str)) { |
972 | $count++; | |
c344e509 DM |
973 | my $ip = Net::IP->new($elem); |
974 | if (!$ip) { | |
ecbea048 DM |
975 | my $err = Net::IP::Error(); |
976 | die "invalid IP address: $err\n"; | |
977 | } | |
3162af6b | 978 | $iprange = 1 if $elem =~ m/-/; |
a589b6ac | 979 | |
c344e509 | 980 | my $new_ipversion = Net::IP::ip_is_ipv6($ip->ip()) ? 6 : 4; |
a589b6ac DM |
981 | |
982 | die "detected mixed ipv4/ipv6 addresses in address list '$str'\n" | |
006490cb | 983 | if $ipversion && ($new_ipversion != $ipversion); |
a589b6ac DM |
984 | |
985 | $ipversion = $new_ipversion; | |
ecbea048 | 986 | } |
e34d0e58 | 987 | |
5163367b | 988 | die "you can't use a range in a list\n" if $iprange && $count > 1; |
a589b6ac | 989 | |
7697c041 | 990 | return $ipversion; |
ecbea048 | 991 | } |
dddd9413 | 992 | |
fcba0beb DM |
993 | sub parse_port_name_number_or_range { |
994 | my ($str) = @_; | |
995 | ||
996 | my $services = PVE::Firewall::get_etc_services(); | |
7ca36671 | 997 | my $count = 0; |
041b7e8e DM |
998 | my $icmp_port = 0; |
999 | ||
fcba0beb | 1000 | foreach my $item (split(/,/, $str)) { |
7ca36671 DM |
1001 | $count++; |
1002 | if ($item =~ m/^(\d+):(\d+)$/) { | |
1003 | my ($port1, $port2) = ($1, $2); | |
1004 | die "invalid port '$port1'\n" if $port1 > 65535; | |
1005 | die "invalid port '$port2'\n" if $port2 > 65535; | |
1006 | } elsif ($item =~ m/^(\d+)$/) { | |
1007 | my $port = $1; | |
1008 | die "invalid port '$port'\n" if $port > 65535; | |
1009 | } else { | |
041b7e8e DM |
1010 | if ($icmp_type_names->{$item}) { |
1011 | $icmp_port = 1; | |
041b9277 DM |
1012 | } elsif ($icmpv6_type_names->{$item}) { |
1013 | $icmp_port = 1; | |
041b7e8e | 1014 | } else { |
e34d0e58 | 1015 | die "invalid port '$item'\n" if !$services->{byname}->{$item}; |
041b7e8e | 1016 | } |
fcba0beb DM |
1017 | } |
1018 | } | |
1019 | ||
041b7e8e DM |
1020 | die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1; |
1021 | ||
7ca36671 | 1022 | return $count; |
fcba0beb DM |
1023 | } |
1024 | ||
54cd19a8 DM |
1025 | PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec); |
1026 | sub pve_fw_verify_port_spec { | |
1027 | my ($portstr) = @_; | |
1028 | ||
7ca36671 | 1029 | parse_port_name_number_or_range($portstr); |
54cd19a8 DM |
1030 | |
1031 | return $portstr; | |
1032 | } | |
1033 | ||
d31689ee DM |
1034 | PVE::JSONSchema::register_format('pve-fw-addr-spec', \&pve_fw_verify_addr_spec); |
1035 | sub pve_fw_verify_addr_spec { | |
54cd19a8 DM |
1036 | my ($list) = @_; |
1037 | ||
1038 | parse_address_list($list); | |
1039 | ||
1040 | return $list; | |
1041 | } | |
1042 | ||
1043 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
1044 | sub pve_fw_verify_protocol_spec { | |
1045 | my ($proto) = @_; | |
1046 | ||
1047 | my $protocols = get_etc_protocols(); | |
1048 | ||
1049 | die "unknown protocol '$proto'\n" if $proto && | |
1050 | !(defined($protocols->{byname}->{$proto}) || | |
1051 | defined($protocols->{byid}->{$proto})); | |
1052 | ||
1053 | return $proto; | |
1054 | } | |
1055 | ||
1056 | ||
d1c53b3e | 1057 | # helper function for API |
d1c53b3e | 1058 | |
5d38d64f DM |
1059 | sub copy_opject_with_digest { |
1060 | my ($object) = @_; | |
1061 | ||
1062 | my $sha = Digest::SHA->new('sha1'); | |
1063 | ||
1064 | my $res = {}; | |
1065 | foreach my $k (sort keys %$object) { | |
1066 | my $v = $object->{$k}; | |
0365eb68 | 1067 | next if !defined($v); |
5d38d64f DM |
1068 | $res->{$k} = $v; |
1069 | $sha->add($k, ':', $v, "\n"); | |
1070 | } | |
1071 | ||
55e686c7 | 1072 | my $digest = $sha->hexdigest; |
5d38d64f DM |
1073 | |
1074 | $res->{digest} = $digest; | |
1075 | ||
1076 | return wantarray ? ($res, $digest) : $res; | |
1077 | } | |
1078 | ||
1079 | sub copy_list_with_digest { | |
1080 | my ($list) = @_; | |
1081 | ||
1082 | my $sha = Digest::SHA->new('sha1'); | |
1083 | ||
1084 | my $res = []; | |
1085 | foreach my $entry (@$list) { | |
1086 | my $data = {}; | |
1087 | foreach my $k (sort keys %$entry) { | |
1088 | my $v = $entry->{$k}; | |
0365eb68 | 1089 | next if !defined($v); |
5d38d64f | 1090 | $data->{$k} = $v; |
6d9246e7 DM |
1091 | # Note: digest ignores refs ($rule->{errors}) |
1092 | $sha->add($k, ':', $v, "\n") if !ref($v); ; | |
5d38d64f DM |
1093 | } |
1094 | push @$res, $data; | |
1095 | } | |
1096 | ||
55e686c7 | 1097 | my $digest = $sha->hexdigest; |
5d38d64f DM |
1098 | |
1099 | foreach my $entry (@$res) { | |
1100 | $entry->{digest} = $digest; | |
1101 | } | |
1102 | ||
1103 | return wantarray ? ($res, $digest) : $res; | |
1104 | } | |
1105 | ||
9c7e0858 DM |
1106 | my $rule_properties = { |
1107 | pos => { | |
1108 | description => "Update rule at position <pos>.", | |
1109 | type => 'integer', | |
1110 | minimum => 0, | |
1111 | optional => 1, | |
1112 | }, | |
c71e785f | 1113 | digest => get_standard_option('pve-config-digest'), |
9c7e0858 DM |
1114 | type => { |
1115 | type => 'string', | |
1116 | optional => 1, | |
1117 | enum => ['in', 'out', 'group'], | |
1118 | }, | |
1119 | action => { | |
c14dacdf | 1120 | description => "Rule action ('ACCEPT', 'DROP', 'REJECT') or security group name.", |
9c7e0858 DM |
1121 | type => 'string', |
1122 | optional => 1, | |
44be8ceb | 1123 | pattern => $security_group_name_pattern, |
c14dacdf DM |
1124 | maxLength => 20, |
1125 | minLength => 2, | |
9c7e0858 | 1126 | }, |
e5076eee DM |
1127 | macro => { |
1128 | type => 'string', | |
1129 | optional => 1, | |
54cd19a8 | 1130 | maxLength => 128, |
e5076eee | 1131 | }, |
54cd19a8 | 1132 | iface => get_standard_option('pve-iface', { optional => 1 }), |
9c7e0858 | 1133 | source => { |
d31689ee | 1134 | type => 'string', format => 'pve-fw-addr-spec', |
9c7e0858 DM |
1135 | optional => 1, |
1136 | }, | |
1137 | dest => { | |
d31689ee | 1138 | type => 'string', format => 'pve-fw-addr-spec', |
9c7e0858 DM |
1139 | optional => 1, |
1140 | }, | |
1141 | proto => { | |
54cd19a8 | 1142 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
1143 | optional => 1, |
1144 | }, | |
1145 | enable => { | |
72d055fc AG |
1146 | type => 'integer', |
1147 | minimum => 0, | |
9c7e0858 DM |
1148 | optional => 1, |
1149 | }, | |
1150 | sport => { | |
54cd19a8 | 1151 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
1152 | optional => 1, |
1153 | }, | |
1154 | dport => { | |
54cd19a8 | 1155 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
1156 | optional => 1, |
1157 | }, | |
1158 | comment => { | |
1159 | type => 'string', | |
1160 | optional => 1, | |
1161 | }, | |
1162 | }; | |
1163 | ||
1164 | sub add_rule_properties { | |
1165 | my ($properties) = @_; | |
1166 | ||
1167 | foreach my $k (keys %$rule_properties) { | |
3655b01f DM |
1168 | my $h = $rule_properties->{$k}; |
1169 | # copy data, so that we can modify later without side effects | |
1170 | foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; } | |
9c7e0858 | 1171 | } |
cbb5d6f3 | 1172 | |
9c7e0858 DM |
1173 | return $properties; |
1174 | } | |
1175 | ||
5b7974df DM |
1176 | sub delete_rule_properties { |
1177 | my ($rule, $delete_str) = @_; | |
e34d0e58 | 1178 | |
5b7974df DM |
1179 | foreach my $opt (PVE::Tools::split_list($delete_str)) { |
1180 | raise_param_exc({ 'delete' => "no such property ('$opt')"}) | |
1181 | if !defined($rule_properties->{$opt}); | |
1182 | raise_param_exc({ 'delete' => "unable to delete required property '$opt'"}) | |
1183 | if $opt eq 'type' || $opt eq 'action'; | |
1184 | delete $rule->{$opt}; | |
1185 | } | |
1186 | ||
1187 | return $rule; | |
1188 | } | |
1189 | ||
9a2745a0 | 1190 | my $apply_macro = sub { |
35d1d6da | 1191 | my ($macro_name, $param, $verify, $ipversion) = @_; |
9a2745a0 DM |
1192 | |
1193 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
1194 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
1195 | ||
35d1d6da DM |
1196 | if ($ipversion && ($ipversion == 6) && $pve_ipv6fw_macros->{$macro_name}) { |
1197 | $macro_rules = $pve_ipv6fw_macros->{$macro_name}; | |
1198 | } | |
1199 | ||
21a18e53 | 1200 | # skip macros which are specific to another ipversion |
ff5d050e AG |
1201 | if ($ipversion && (my $required = $pve_fw_macro_ipversion->{$macro_name})) { |
1202 | return if $ipversion != $required; | |
1203 | } | |
21a18e53 | 1204 | |
9a2745a0 DM |
1205 | my $rules = []; |
1206 | ||
1207 | foreach my $templ (@$macro_rules) { | |
1208 | my $rule = {}; | |
1209 | my $param_used = {}; | |
1210 | foreach my $k (keys %$templ) { | |
1211 | my $v = $templ->{$k}; | |
1212 | if ($v eq 'PARAM') { | |
1213 | $v = $param->{$k}; | |
1214 | $param_used->{$k} = 1; | |
1215 | } elsif ($v eq 'DEST') { | |
1216 | $v = $param->{dest}; | |
1217 | $param_used->{dest} = 1; | |
1218 | } elsif ($v eq 'SOURCE') { | |
1219 | $v = $param->{source}; | |
1220 | $param_used->{source} = 1; | |
1221 | } | |
1222 | ||
1223 | if (!defined($v)) { | |
1224 | my $msg = "missing parameter '$k' in macro '$macro_name'"; | |
e34d0e58 | 1225 | raise_param_exc({ macro => $msg }) if $verify; |
9a2745a0 DM |
1226 | die "$msg\n"; |
1227 | } | |
1228 | $rule->{$k} = $v; | |
1229 | } | |
1230 | foreach my $k (keys %$param) { | |
1231 | next if $k eq 'macro'; | |
1232 | next if !defined($param->{$k}); | |
1233 | next if $param_used->{$k}; | |
1234 | if (defined($rule->{$k})) { | |
1235 | if ($rule->{$k} ne $param->{$k}) { | |
1236 | my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')"; | |
e34d0e58 | 1237 | raise_param_exc({ $k => $msg }) if $verify; |
9a2745a0 DM |
1238 | die "$msg\n"; |
1239 | } | |
1240 | } else { | |
1241 | $rule->{$k} = $param->{$k}; | |
1242 | } | |
1243 | } | |
1244 | push @$rules, $rule; | |
1245 | } | |
1246 | ||
1247 | return $rules; | |
1248 | }; | |
1249 | ||
b6b8e6ad DM |
1250 | my $rule_env_iface_lookup = { |
1251 | 'ct' => 1, | |
1252 | 'vm' => 1, | |
1253 | 'group' => 0, | |
1254 | 'cluster' => 1, | |
1255 | 'host' => 1, | |
1256 | }; | |
1257 | ||
7ca36671 | 1258 | sub verify_rule { |
a523e057 | 1259 | my ($rule, $cluster_conf, $fw_conf, $rule_env, $noerr) = @_; |
b6b8e6ad DM |
1260 | |
1261 | my $allow_groups = $rule_env eq 'group' ? 0 : 1; | |
bfc488f6 | 1262 | |
b6b8e6ad DM |
1263 | my $allow_iface = $rule_env_iface_lookup->{$rule_env}; |
1264 | die "unknown rule_env '$rule_env'\n" if !defined($allow_iface); # should not happen | |
7ca36671 | 1265 | |
a523e057 DM |
1266 | my $errors = $rule->{errors} || {}; |
1267 | ||
6d9246e7 | 1268 | my $error_count = 0; |
7ca36671 | 1269 | |
6d9246e7 DM |
1270 | my $add_error = sub { |
1271 | my ($param, $msg) = @_; | |
d4cda423 | 1272 | chomp $msg; |
6d9246e7 DM |
1273 | raise_param_exc({ $param => $msg }) if !$noerr; |
1274 | $error_count++; | |
1275 | $errors->{$param} = $msg if !$errors->{$param}; | |
1276 | }; | |
1277 | ||
eea9d2a1 DM |
1278 | my $ipversion; |
1279 | my $set_ip_version = sub { | |
1280 | my $vers = shift; | |
1281 | if ($vers) { | |
1282 | die "detected mixed ipv4/ipv6 adresses in rule\n" | |
1283 | if $ipversion && ($vers != $ipversion); | |
1284 | $ipversion = $vers; | |
1285 | } | |
1286 | }; | |
1287 | ||
a523e057 | 1288 | my $check_ipset_or_alias_property = sub { |
ae029a88 | 1289 | my ($name, $expected_ipversion) = @_; |
a523e057 DM |
1290 | |
1291 | if (my $value = $rule->{$name}) { | |
1292 | if ($value =~ m/^\+/) { | |
4dfe04e6 | 1293 | if ($value =~ m/^\+(${ipset_name_pattern})$/) { |
bfc488f6 | 1294 | &$add_error($name, "no such ipset '$1'") |
a523e057 | 1295 | if !($cluster_conf->{ipset}->{$1} || ($fw_conf && $fw_conf->{ipset}->{$1})); |
bfc488f6 | 1296 | |
a523e057 | 1297 | } else { |
351052d1 | 1298 | &$add_error($name, "invalid ipset name '$value'"); |
a523e057 DM |
1299 | } |
1300 | } elsif ($value =~ m/^${ip_alias_pattern}$/){ | |
1301 | my $alias = lc($value); | |
bfc488f6 | 1302 | &$add_error($name, "no such alias '$value'") |
70e524eb | 1303 | if !($cluster_conf->{aliases}->{$alias} || ($fw_conf && $fw_conf->{aliases}->{$alias})); |
04f5088f | 1304 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; |
70e524eb AD |
1305 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; |
1306 | ||
eea9d2a1 | 1307 | &$set_ip_version($e->{ipversion}); |
a523e057 DM |
1308 | } |
1309 | } | |
1310 | }; | |
1311 | ||
6d9246e7 DM |
1312 | my $type = $rule->{type}; |
1313 | my $action = $rule->{action}; | |
bfc488f6 | 1314 | |
6d9246e7 DM |
1315 | &$add_error('type', "missing property") if !$type; |
1316 | &$add_error('action', "missing property") if !$action; | |
1317 | ||
1318 | if ($type) { | |
1319 | if ($type eq 'in' || $type eq 'out') { | |
1320 | &$add_error('action', "unknown action '$action'") | |
1321 | if $action && ($action !~ m/^(ACCEPT|DROP|REJECT)$/); | |
1322 | } elsif ($type eq 'group') { | |
1323 | &$add_error('type', "security groups not allowed") | |
1324 | if !$allow_groups; | |
1325 | &$add_error('action', "invalid characters in security group name") | |
1326 | if $action && ($action !~ m/^${security_group_name_pattern}$/); | |
1327 | } else { | |
1328 | &$add_error('type', "unknown rule type '$type'"); | |
1329 | } | |
7ca36671 | 1330 | } |
e34d0e58 | 1331 | |
dba740a9 | 1332 | if ($rule->{iface}) { |
bfc488f6 | 1333 | &$add_error('type', "parameter -i not allowed for this rule type") |
b6b8e6ad | 1334 | if !$allow_iface; |
dba740a9 | 1335 | eval { PVE::JSONSchema::pve_verify_iface($rule->{iface}); }; |
6d9246e7 | 1336 | &$add_error('iface', $@) if $@; |
fdefeeab | 1337 | if ($rule_env eq 'vm' || $rule_env eq 'ct') { |
b6b8e6ad DM |
1338 | &$add_error('iface', "value does not match the regex pattern 'net\\d+'") |
1339 | if $rule->{iface} !~ m/^net(\d+)$/; | |
b6b8e6ad DM |
1340 | } |
1341 | } | |
7ca36671 DM |
1342 | |
1343 | if ($rule->{macro}) { | |
6d9246e7 DM |
1344 | if (my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}) { |
1345 | $rule->{macro} = $preferred_name; | |
1346 | } else { | |
1347 | &$add_error('macro', "unknown macro '$rule->{macro}'"); | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | if ($rule->{proto}) { | |
1352 | eval { pve_fw_verify_protocol_spec($rule->{proto}); }; | |
1353 | &$add_error('proto', $@) if $@; | |
041b9277 DM |
1354 | &$set_ip_version(4) if $rule->{proto} eq 'icmp'; |
1355 | &$set_ip_version(6) if $rule->{proto} eq 'icmpv6'; | |
6d9246e7 | 1356 | } |
7ca36671 DM |
1357 | |
1358 | if ($rule->{dport}) { | |
1359 | eval { parse_port_name_number_or_range($rule->{dport}); }; | |
6d9246e7 DM |
1360 | &$add_error('dport', $@) if $@; |
1361 | &$add_error('proto', "missing property - 'dport' requires this property") | |
914f9a50 | 1362 | if !$rule->{proto}; |
6d9246e7 | 1363 | } |
7ca36671 DM |
1364 | |
1365 | if ($rule->{sport}) { | |
1366 | eval { parse_port_name_number_or_range($rule->{sport}); }; | |
6d9246e7 DM |
1367 | &$add_error('sport', $@) if $@; |
1368 | &$add_error('proto', "missing property - 'sport' requires this property") | |
914f9a50 | 1369 | if !$rule->{proto}; |
7ca36671 DM |
1370 | } |
1371 | ||
1372 | if ($rule->{source}) { | |
041b9277 DM |
1373 | eval { |
1374 | my $source_ipversion = parse_address_list($rule->{source}); | |
1375 | &$set_ip_version($source_ipversion); | |
1376 | }; | |
6d9246e7 | 1377 | &$add_error('source', $@) if $@; |
ae029a88 | 1378 | &$check_ipset_or_alias_property('source', $ipversion); |
7ca36671 DM |
1379 | } |
1380 | ||
1381 | if ($rule->{dest}) { | |
9e2205e5 DM |
1382 | eval { |
1383 | my $dest_ipversion = parse_address_list($rule->{dest}); | |
041b9277 | 1384 | &$set_ip_version($dest_ipversion); |
9e2205e5 | 1385 | }; |
6d9246e7 | 1386 | &$add_error('dest', $@) if $@; |
ae029a88 | 1387 | &$check_ipset_or_alias_property('dest', $ipversion); |
7ca36671 DM |
1388 | } |
1389 | ||
35d1d6da DM |
1390 | $rule->{ipversion} = $ipversion if $ipversion; |
1391 | ||
a523e057 | 1392 | if ($rule->{macro} && !$error_count) { |
35d1d6da | 1393 | eval { &$apply_macro($rule->{macro}, $rule, 1, $ipversion); }; |
6d9246e7 DM |
1394 | if (my $err = $@) { |
1395 | if (ref($err) eq "PVE::Exception" && $err->{errors}) { | |
1396 | my $eh = $err->{errors}; | |
1397 | foreach my $p (keys %$eh) { | |
1398 | &$add_error($p, $eh->{$p}); | |
1399 | } | |
1400 | } else { | |
1401 | &$add_error('macro', "$err"); | |
1402 | } | |
1403 | } | |
9a2745a0 DM |
1404 | } |
1405 | ||
6d9246e7 DM |
1406 | $rule->{errors} = $errors if $error_count; |
1407 | ||
7ca36671 DM |
1408 | return $rule; |
1409 | } | |
1410 | ||
9c7e0858 DM |
1411 | sub copy_rule_data { |
1412 | my ($rule, $param) = @_; | |
1413 | ||
1414 | foreach my $k (keys %$rule_properties) { | |
1415 | if (defined(my $v = $param->{$k})) { | |
1416 | if ($v eq '' || $v eq '-') { | |
1417 | delete $rule->{$k}; | |
1418 | } else { | |
1419 | $rule->{$k} = $v; | |
1420 | } | |
9c7e0858 DM |
1421 | } |
1422 | } | |
7ca36671 | 1423 | |
9c7e0858 DM |
1424 | return $rule; |
1425 | } | |
1426 | ||
9f6845cf DM |
1427 | sub rules_modify_permissions { |
1428 | my ($rule_env) = @_; | |
1429 | ||
1430 | if ($rule_env eq 'host') { | |
1431 | return { | |
1432 | check => ['perm', '/nodes/{node}', [ 'Sys.Modify' ]], | |
1433 | }; | |
1434 | } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') { | |
1435 | return { | |
1436 | check => ['perm', '/', [ 'Sys.Modify' ]], | |
1437 | }; | |
3b4882dc | 1438 | } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') { |
9f6845cf DM |
1439 | return { |
1440 | check => ['perm', '/vms/{vmid}', [ 'VM.Config.Network' ]], | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | return undef; | |
1445 | } | |
1446 | ||
1447 | sub rules_audit_permissions { | |
1448 | my ($rule_env) = @_; | |
1449 | ||
1450 | if ($rule_env eq 'host') { | |
1451 | return { | |
1452 | check => ['perm', '/nodes/{node}', [ 'Sys.Audit' ]], | |
1453 | }; | |
1454 | } elsif ($rule_env eq 'cluster' || $rule_env eq 'group') { | |
1455 | return { | |
1456 | check => ['perm', '/', [ 'Sys.Audit' ]], | |
1457 | }; | |
3b4882dc | 1458 | } elsif ($rule_env eq 'vm' || $rule_env eq 'ct') { |
9f6845cf DM |
1459 | return { |
1460 | check => ['perm', '/vms/{vmid}', [ 'VM.Audit' ]], | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | return undef; | |
1465 | } | |
1466 | ||
9c7e0858 | 1467 | # core functions |
780bcc0f DM |
1468 | my $bridge_firewall_enabled = 0; |
1469 | ||
1470 | sub enable_bridge_firewall { | |
1471 | ||
1472 | return if $bridge_firewall_enabled; # only once | |
1473 | ||
5f0a912c DM |
1474 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
1475 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 1476 | |
6a8a75db DM |
1477 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
1478 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
1479 | ||
780bcc0f DM |
1480 | $bridge_firewall_enabled = 1; |
1481 | } | |
1482 | ||
8cebfa6f | 1483 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 1484 | |
b16e818e DM |
1485 | sub iptables_restore_cmdlist { |
1486 | my ($cmdlist) = @_; | |
3a616aa0 | 1487 | |
59f9b456 | 1488 | run_command("/sbin/iptables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist"); |
3a616aa0 AD |
1489 | } |
1490 | ||
17da5c0f AD |
1491 | sub ip6tables_restore_cmdlist { |
1492 | my ($cmdlist) = @_; | |
1493 | ||
59f9b456 | 1494 | run_command("/sbin/ip6tables-restore -n", input => $cmdlist, errmsg => "iptables_restore_cmdlist"); |
17da5c0f AD |
1495 | } |
1496 | ||
34cdedfa AD |
1497 | sub ipset_restore_cmdlist { |
1498 | my ($cmdlist) = @_; | |
1499 | ||
ff5363da | 1500 | run_command("/sbin/ipset restore", input => $cmdlist, errmsg => "ipset_restore_cmdlist"); |
34cdedfa AD |
1501 | } |
1502 | ||
de2a57cd | 1503 | sub iptables_get_chains { |
17da5c0f AD |
1504 | my ($iptablescmd) = @_; |
1505 | ||
1506 | $iptablescmd = "iptables" if !$iptablescmd; | |
de2a57cd DM |
1507 | |
1508 | my $res = {}; | |
1509 | ||
1510 | # check what chains we want to track | |
1511 | my $is_pvefw_chain = sub { | |
1512 | my $name = shift; | |
1513 | ||
dec84fcd DM |
1514 | return 1 if $name =~ m/^PVEFW-\S+$/; |
1515 | ||
a3ded5cd | 1516 | return 1 if $name =~ m/^tap\d+i\d+-(?:IN|OUT)$/; |
954f24b1 | 1517 | |
a3ded5cd | 1518 | return 1 if $name =~ m/^veth\d+i\d+-(?:IN|OUT)$/; |
954f24b1 | 1519 | |
a3ded5cd | 1520 | return 1 if $name =~ m/^fwbr\d+(v\d+)?-(?:FW|IN|OUT|IPS)$/; |
a89dfcc6 | 1521 | return 1 if $name =~ m/^GROUP-(?:$security_group_name_pattern)-(?:IN|OUT)$/; |
de2a57cd DM |
1522 | |
1523 | return undef; | |
1524 | }; | |
1525 | ||
1526 | my $table = ''; | |
1527 | ||
c4a2e5ae DM |
1528 | my $hooks = {}; |
1529 | ||
de2a57cd DM |
1530 | my $parser = sub { |
1531 | my $line = shift; | |
1532 | ||
1533 | return if $line =~ m/^#/; | |
1534 | return if $line =~ m/^\s*$/; | |
1535 | ||
1536 | if ($line =~ m/^\*(\S+)$/) { | |
1537 | $table = $1; | |
1538 | return; | |
1539 | } | |
1540 | ||
1541 | return if $table ne 'filter'; | |
1542 | ||
1543 | if ($line =~ m/^:(\S+)\s/) { | |
1544 | my $chain = $1; | |
1545 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 1546 | $res->{$chain} = "unknown"; |
09d5f68e | 1547 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 1548 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 1549 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 1550 | $res->{$chain} = $sig; |
c4a2e5ae DM |
1551 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) { |
1552 | $hooks->{$1} = 1; | |
de2a57cd DM |
1553 | } else { |
1554 | # simply ignore the rest | |
1555 | return; | |
1556 | } | |
1557 | }; | |
1558 | ||
17da5c0f | 1559 | run_command("/sbin/$iptablescmd-save", outfunc => $parser); |
de2a57cd | 1560 | |
c4a2e5ae | 1561 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
1562 | } |
1563 | ||
9bf7d929 DM |
1564 | sub iptables_chain_digest { |
1565 | my ($rules) = @_; | |
1566 | my $digest = Digest::SHA->new('sha1'); | |
1567 | foreach my $rule (@$rules) { # order is important | |
1568 | $digest->add($rule); | |
1569 | } | |
1570 | return $digest->b64digest; | |
1571 | } | |
1572 | ||
3f95d14a DM |
1573 | sub ipset_chain_digest { |
1574 | my ($rules) = @_; | |
4bd0a9c4 | 1575 | |
3f95d14a DM |
1576 | my $digest = Digest::SHA->new('sha1'); |
1577 | foreach my $rule (sort @$rules) { # note: sorted | |
1578 | $digest->add($rule); | |
1579 | } | |
1580 | return $digest->b64digest; | |
1581 | } | |
1582 | ||
34cdedfa AD |
1583 | sub ipset_get_chains { |
1584 | ||
1585 | my $res = {}; | |
1586 | my $chains = {}; | |
1587 | ||
1588 | my $parser = sub { | |
1589 | my $line = shift; | |
1590 | ||
1591 | return if $line =~ m/^#/; | |
1592 | return if $line =~ m/^\s*$/; | |
4b96e877 | 1593 | if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) { |
81a0bf43 DM |
1594 | my $chain = $1; |
1595 | $line =~ s/\s+$//; # delete trailing white space | |
1596 | push @{$chains->{$chain}}, $line; | |
34cdedfa AD |
1597 | } else { |
1598 | # simply ignore the rest | |
1599 | return; | |
1600 | } | |
1601 | }; | |
1602 | ||
ff5363da | 1603 | run_command("/sbin/ipset save", outfunc => $parser); |
34cdedfa | 1604 | |
3f95d14a DM |
1605 | # compute digest for each chain |
1606 | foreach my $chain (keys %$chains) { | |
1607 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
1608 | } |
1609 | ||
1610 | return $res; | |
1611 | } | |
1612 | ||
eba0fb64 | 1613 | sub ruleset_generate_cmdstr { |
88c26d5e | 1614 | my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_; |
3a616aa0 | 1615 | |
00bb4391 | 1616 | return if defined($rule->{enable}) && !$rule->{enable}; |
6d9246e7 | 1617 | return if $rule->{errors}; |
11bac5c2 | 1618 | |
e5076eee DM |
1619 | die "unable to emit macro - internal error" if $rule->{macro}; # should not happen |
1620 | ||
1621 | my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0; | |
1622 | my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0; | |
e5076eee | 1623 | |
41524a58 | 1624 | my @cmd = (); |
3a616aa0 | 1625 | |
eba0fb64 DM |
1626 | push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in}; |
1627 | push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
1628 | ||
ba791b1f AD |
1629 | my $source = $rule->{source}; |
1630 | my $dest = $rule->{dest}; | |
1631 | ||
cbb5d6f3 | 1632 | if ($source) { |
44be8ceb | 1633 | if ($source =~ m/^\+/) { |
4dfe04e6 | 1634 | if ($source =~ m/^\+(${ipset_name_pattern})$/) { |
e523d2bb DM |
1635 | my $name = $1; |
1636 | if ($fw_conf && $fw_conf->{ipset}->{$name}) { | |
88c26d5e | 1637 | my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion); |
708ba714 | 1638 | push @cmd, "-m set --match-set ${ipset_chain} src"; |
e523d2bb | 1639 | } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) { |
88c26d5e | 1640 | my $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion); |
708ba714 | 1641 | push @cmd, "-m set --match-set ${ipset_chain} src"; |
e523d2bb DM |
1642 | } else { |
1643 | die "no such ipset '$name'\n"; | |
1644 | } | |
44be8ceb DM |
1645 | } else { |
1646 | die "invalid security group name '$source'\n"; | |
1647 | } | |
1648 | } elsif ($source =~ m/^${ip_alias_pattern}$/){ | |
81d574a7 | 1649 | my $alias = lc($source); |
04f5088f | 1650 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; |
e523d2bb DM |
1651 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; |
1652 | die "no such alias '$source'\n" if !$e; | |
81d574a7 | 1653 | push @cmd, "-s $e->{cidr}"; |
ac8242cc | 1654 | } elsif ($source =~ m/\-/){ |
ba791b1f | 1655 | push @cmd, "-m iprange --src-range $source"; |
cbb5d6f3 | 1656 | } else { |
ba791b1f AD |
1657 | push @cmd, "-s $source"; |
1658 | } | |
1659 | } | |
1660 | ||
cbb5d6f3 | 1661 | if ($dest) { |
44be8ceb | 1662 | if ($dest =~ m/^\+/) { |
4dfe04e6 | 1663 | if ($dest =~ m/^\+(${ipset_name_pattern})$/) { |
e523d2bb DM |
1664 | my $name = $1; |
1665 | if ($fw_conf && $fw_conf->{ipset}->{$name}) { | |
88c26d5e | 1666 | my $ipset_chain = compute_ipset_chain_name($fw_conf->{vmid}, $name, $ipversion); |
ac4580a0 | 1667 | push @cmd, "-m set --match-set ${ipset_chain} dst"; |
e523d2bb | 1668 | } elsif ($cluster_conf && $cluster_conf->{ipset}->{$name}) { |
88c26d5e | 1669 | my $ipset_chain = compute_ipset_chain_name(0, $name, $ipversion); |
708ba714 | 1670 | push @cmd, "-m set --match-set ${ipset_chain} dst"; |
e523d2bb DM |
1671 | } else { |
1672 | die "no such ipset '$name'\n"; | |
1673 | } | |
44be8ceb DM |
1674 | } else { |
1675 | die "invalid security group name '$dest'\n"; | |
1676 | } | |
1677 | } elsif ($dest =~ m/^${ip_alias_pattern}$/){ | |
51b40846 | 1678 | my $alias = lc($dest); |
04f5088f | 1679 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; |
e523d2bb DM |
1680 | $e = $cluster_conf->{aliases}->{$alias} if !$e && $cluster_conf; |
1681 | die "no such alias '$dest'\n" if !$e; | |
81d574a7 | 1682 | push @cmd, "-d $e->{cidr}"; |
cbb5d6f3 | 1683 | } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){ |
ba791b1f | 1684 | push @cmd, "-m iprange --dst-range $dest"; |
cbb5d6f3 | 1685 | } else { |
d6d2a385 | 1686 | push @cmd, "-d $dest"; |
ba791b1f AD |
1687 | } |
1688 | } | |
4b586518 | 1689 | |
181390b0 | 1690 | if ($rule->{proto}) { |
41524a58 | 1691 | push @cmd, "-p $rule->{proto}"; |
e3a1d391 | 1692 | |
181390b0 | 1693 | my $multiport = 0; |
e5076eee DM |
1694 | $multiport++ if $nbdport > 1; |
1695 | $multiport++ if $nbsport > 1; | |
e3a1d391 | 1696 | |
41524a58 | 1697 | push @cmd, "--match multiport" if $multiport; |
4b586518 | 1698 | |
cbb5d6f3 | 1699 | die "multiport: option '--sports' cannot be used together with '--dports'\n" |
181390b0 DM |
1700 | if ($multiport == 2) && ($rule->{dport} ne $rule->{sport}); |
1701 | ||
1702 | if ($rule->{dport}) { | |
1703 | if ($rule->{proto} && $rule->{proto} eq 'icmp') { | |
1704 | # Note: we use dport to store --icmp-type | |
9bd7a4b3 WB |
1705 | die "unknown icmp-type '$rule->{dport}'\n" |
1706 | if $rule->{dport} !~ /^\d+$/ && !defined($icmp_type_names->{$rule->{dport}}); | |
41524a58 | 1707 | push @cmd, "-m icmp --icmp-type $rule->{dport}"; |
041b9277 DM |
1708 | } elsif ($rule->{proto} && $rule->{proto} eq 'icmpv6') { |
1709 | # Note: we use dport to store --icmpv6-type | |
9bd7a4b3 WB |
1710 | die "unknown icmpv6-type '$rule->{dport}'\n" |
1711 | if $rule->{dport} !~ /^\d+$/ && !defined($icmpv6_type_names->{$rule->{dport}}); | |
041b9277 | 1712 | push @cmd, "-m icmpv6 --icmpv6-type $rule->{dport}"; |
181390b0 | 1713 | } else { |
e5076eee | 1714 | if ($nbdport > 1) { |
181390b0 | 1715 | if ($multiport == 2) { |
41524a58 | 1716 | push @cmd, "--ports $rule->{dport}"; |
181390b0 | 1717 | } else { |
41524a58 | 1718 | push @cmd, "--dports $rule->{dport}"; |
181390b0 | 1719 | } |
e3a1d391 | 1720 | } else { |
41524a58 | 1721 | push @cmd, "--dport $rule->{dport}"; |
e3a1d391 | 1722 | } |
4b586518 DM |
1723 | } |
1724 | } | |
4b586518 | 1725 | |
181390b0 | 1726 | if ($rule->{sport}) { |
e5076eee | 1727 | if ($nbsport > 1) { |
41524a58 | 1728 | push @cmd, "--sports $rule->{sport}" if $multiport != 2; |
181390b0 | 1729 | } else { |
41524a58 | 1730 | push @cmd, "--sport $rule->{sport}"; |
181390b0 | 1731 | } |
4b586518 | 1732 | } |
181390b0 | 1733 | } elsif ($rule->{dport} || $rule->{sport}) { |
93d96f83 DM |
1734 | die "destination port '$rule->{dport}', but no protocol specified\n" if $rule->{dport}; |
1735 | die "source port '$rule->{sport}', but no protocol specified\n" if $rule->{sport}; | |
4b586518 DM |
1736 | } |
1737 | ||
41524a58 | 1738 | push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; |
4e6112f9 DM |
1739 | |
1740 | if (my $action = $rule->{action}) { | |
cbb5d6f3 | 1741 | $action = $actions->{$action} if defined($actions->{$action}); |
4e6112f9 | 1742 | $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK'; |
41524a58 | 1743 | push @cmd, $goto ? "-g $action" : "-j $action"; |
181390b0 | 1744 | } |
3a616aa0 | 1745 | |
eba0fb64 DM |
1746 | return scalar(@cmd) ? join(' ', @cmd) : undef; |
1747 | } | |
1748 | ||
1749 | sub ruleset_generate_rule { | |
88c26d5e | 1750 | my ($ruleset, $chain, $ipversion, $rule, $actions, $goto, $cluster_conf, $fw_conf) = @_; |
eba0fb64 | 1751 | |
e5076eee DM |
1752 | my $rules; |
1753 | ||
1754 | if ($rule->{macro}) { | |
35d1d6da | 1755 | $rules = &$apply_macro($rule->{macro}, $rule, 0, $ipversion); |
e5076eee DM |
1756 | } else { |
1757 | $rules = [ $rule ]; | |
1758 | } | |
1759 | ||
d4091b82 DM |
1760 | # update all or nothing |
1761 | ||
1762 | my @cmds = (); | |
cbb5d6f3 | 1763 | foreach my $tmp (@$rules) { |
88c26d5e | 1764 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $ipversion, $tmp, $actions, $goto, $cluster_conf, $fw_conf)) { |
d4091b82 | 1765 | push @cmds, $cmdstr; |
e5076eee | 1766 | } |
41524a58 | 1767 | } |
d4091b82 DM |
1768 | |
1769 | foreach my $cmdstr (@cmds) { | |
1770 | ruleset_addrule($ruleset, $chain, $cmdstr); | |
1771 | } | |
3fa83edf | 1772 | } |
0f168d7b | 1773 | |
eba0fb64 | 1774 | sub ruleset_generate_rule_insert { |
88c26d5e | 1775 | my ($ruleset, $chain, $ipversion, $rule, $actions, $goto) = @_; |
eba0fb64 | 1776 | |
e5076eee DM |
1777 | die "implement me" if $rule->{macro}; # not implemented, because not needed so far |
1778 | ||
88c26d5e | 1779 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $ipversion, $rule, $actions, $goto)) { |
eba0fb64 DM |
1780 | ruleset_insertrule($ruleset, $chain, $cmdstr); |
1781 | } | |
1782 | } | |
3fa83edf DM |
1783 | |
1784 | sub ruleset_create_chain { | |
1785 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1786 | |
d050c724 | 1787 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 1788 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 1789 | |
3fa83edf DM |
1790 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
1791 | ||
1792 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
1793 | } |
1794 | ||
3fa83edf DM |
1795 | sub ruleset_chain_exist { |
1796 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1797 | |
3fa83edf DM |
1798 | return $ruleset->{$chain} ? 1 : undef; |
1799 | } | |
3a616aa0 | 1800 | |
3fa83edf DM |
1801 | sub ruleset_addrule { |
1802 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1803 | |
3fa83edf | 1804 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1805 | |
3fa83edf DM |
1806 | push @{$ruleset->{$chain}}, "-A $chain $rule"; |
1807 | } | |
3a616aa0 | 1808 | |
3fa83edf DM |
1809 | sub ruleset_insertrule { |
1810 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1811 | |
3fa83edf | 1812 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1813 | |
3fa83edf DM |
1814 | unshift @{$ruleset->{$chain}}, "-A $chain $rule"; |
1815 | } | |
3a616aa0 | 1816 | |
782c4cde DM |
1817 | sub get_log_rule_base { |
1818 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
cbb5d6f3 | 1819 | |
782c4cde DM |
1820 | die "internal error - no log level" if !defined($loglevel); |
1821 | ||
1822 | $vmid = 0 if !defined($vmid); | |
1823 | ||
cbb5d6f3 | 1824 | # Note: we use special format for prefix to pass further |
782c4cde DM |
1825 | # info to log daemon (VMID, LOGVELEL and CHAIN) |
1826 | ||
1827 | return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; | |
1828 | } | |
1829 | ||
1830 | sub ruleset_addlog { | |
1831 | my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_; | |
1832 | ||
1833 | return if !defined($loglevel); | |
1834 | ||
1835 | my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel); | |
1836 | ||
1837 | $logrule = "$rule $logrule" if defined($rule); | |
1838 | ||
88733a74 | 1839 | ruleset_addrule($ruleset, $chain, $logrule); |
782c4cde DM |
1840 | } |
1841 | ||
ead850e8 | 1842 | sub ruleset_add_chain_policy { |
88c26d5e | 1843 | my ($ruleset, $chain, $ipversion, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
1844 | |
1845 | if ($policy eq 'ACCEPT') { | |
1846 | ||
88c26d5e | 1847 | ruleset_generate_rule($ruleset, $chain, $ipversion, { action => 'ACCEPT' }, |
ead850e8 DM |
1848 | { ACCEPT => $accept_action}); |
1849 | ||
1850 | } elsif ($policy eq 'DROP') { | |
1851 | ||
1852 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop"); | |
1853 | ||
782c4cde | 1854 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1855 | |
1856 | ruleset_addrule($ruleset, $chain, "-j DROP"); | |
1857 | } elsif ($policy eq 'REJECT') { | |
1858 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject"); | |
1859 | ||
782c4cde | 1860 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1861 | |
1862 | ruleset_addrule($ruleset, $chain, "-g PVEFW-reject"); | |
1863 | } else { | |
1864 | # should not happen | |
1865 | die "internal error: unknown policy '$policy'"; | |
1866 | } | |
1867 | } | |
1868 | ||
e2943485 DM |
1869 | sub ruleset_chain_add_conn_filters { |
1870 | my ($ruleset, $chain, $accept) = @_; | |
1871 | ||
1872 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); | |
1873 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); | |
1874 | } | |
1875 | ||
1876 | sub ruleset_chain_add_input_filters { | |
88c26d5e | 1877 | my ($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel) = @_; |
2428e394 AD |
1878 | |
1879 | if ($cluster_conf->{ipset}->{blacklist}){ | |
b5831a0d AD |
1880 | if (!ruleset_chain_exist($ruleset, "PVEFW-blacklist")) { |
1881 | ruleset_create_chain($ruleset, "PVEFW-blacklist"); | |
1882 | ruleset_addlog($ruleset, "PVEFW-blacklist", 0, "DROP: ", $loglevel) if $loglevel; | |
1883 | ruleset_addrule($ruleset, "PVEFW-blacklist", "-j DROP"); | |
1884 | } | |
88c26d5e | 1885 | my $ipset_chain = compute_ipset_chain_name(0, 'blacklist', $ipversion); |
708ba714 | 1886 | ruleset_addrule($ruleset, $chain, "-m set --match-set ${ipset_chain} src -j PVEFW-blacklist"); |
2428e394 | 1887 | } |
e2943485 DM |
1888 | |
1889 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { | |
5b5c42b1 DM |
1890 | if ($ipversion == 4) { |
1891 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); | |
1892 | } | |
e2943485 DM |
1893 | } |
1894 | ||
1895 | if ($options->{tcpflags}) { | |
1896 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); | |
1897 | } | |
1898 | } | |
1899 | ||
9e15114a | 1900 | sub ruleset_create_vm_chain { |
88c26d5e | 1901 | my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_; |
3a616aa0 | 1902 | |
9e15114a | 1903 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1904 | my $accept = generate_nfqueue($options); |
3a616aa0 | 1905 | |
ce15d90b | 1906 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
76a2d1e7 | 1907 | if ($direction eq 'OUT') { |
88c26d5e DM |
1908 | ruleset_generate_rule($ruleset, $chain, $ipversion, |
1909 | { action => 'PVEFW-SET-ACCEPT-MARK', | |
1910 | proto => 'udp', sport => 68, dport => 67 }); | |
76a2d1e7 | 1911 | } else { |
88c26d5e DM |
1912 | ruleset_generate_rule($ruleset, $chain, $ipversion, |
1913 | { action => 'ACCEPT', | |
1914 | proto => 'udp', sport => 67, dport => 68 }); | |
76a2d1e7 | 1915 | } |
ce15d90b DM |
1916 | } |
1917 | ||
b21aca2c DM |
1918 | if ($direction eq 'OUT') { |
1919 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
9e15114a | 1920 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP"); |
b21aca2c | 1921 | } |
808d711d DM |
1922 | if ($ipfilter_ipset) { |
1923 | ruleset_addrule($ruleset, $chain, "-m set ! --match-set $ipfilter_ipset src -j DROP"); | |
1924 | } | |
9e15114a | 1925 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
c29f55c9 | 1926 | } |
9e15114a DM |
1927 | } |
1928 | ||
4bc6b5ac | 1929 | sub ruleset_add_group_rule { |
aedde2c2 | 1930 | my ($ruleset, $cluster_conf, $chain, $rule, $direction, $action, $ipversion) = @_; |
4bc6b5ac DM |
1931 | |
1932 | my $group = $rule->{action}; | |
1933 | my $group_chain = "GROUP-$group-$direction"; | |
1934 | if(!ruleset_chain_exist($ruleset, $group_chain)){ | |
aedde2c2 | 1935 | generate_group_rules($ruleset, $cluster_conf, $group, $ipversion); |
4bc6b5ac | 1936 | } |
bfc488f6 | 1937 | |
f8b12fff DM |
1938 | if ($direction eq 'OUT' && $rule->{iface_out}) { |
1939 | ruleset_addrule($ruleset, $chain, "-o $rule->{iface_out} -j $group_chain"); | |
1940 | } elsif ($direction eq 'IN' && $rule->{iface_in}) { | |
1941 | ruleset_addrule($ruleset, $chain, "-i $rule->{iface_in} -j $group_chain"); | |
4bc6b5ac DM |
1942 | } else { |
1943 | ruleset_addrule($ruleset, $chain, "-j $group_chain"); | |
1944 | } | |
1945 | ||
1946 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $action"); | |
1947 | } | |
1948 | ||
9e15114a | 1949 | sub ruleset_generate_vm_rules { |
84870b1a | 1950 | my ($ruleset, $rules, $cluster_conf, $vmfw_conf, $chain, $netid, $direction, $options, $ipversion) = @_; |
9e15114a DM |
1951 | |
1952 | my $lc_direction = lc($direction); | |
c29f55c9 | 1953 | |
6b8ca015 DM |
1954 | my $in_accept = generate_nfqueue($options); |
1955 | ||
92e976b3 DM |
1956 | foreach my $rule (@$rules) { |
1957 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
b7ab6989 | 1958 | next if !$rule->{enable} || $rule->{errors}; |
006490cb | 1959 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
84870b1a | 1960 | |
92e976b3 | 1961 | if ($rule->{type} eq 'group') { |
4bc6b5ac | 1962 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, $direction, |
aedde2c2 | 1963 | $direction eq 'OUT' ? 'RETURN' : $in_accept, $ipversion); |
92e976b3 DM |
1964 | } else { |
1965 | next if $rule->{type} ne $lc_direction; | |
921dfb33 DM |
1966 | eval { |
1967 | if ($direction eq 'OUT') { | |
88c26d5e | 1968 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, |
e34d0e58 | 1969 | { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, |
e523d2bb | 1970 | undef, $cluster_conf, $vmfw_conf); |
921dfb33 | 1971 | } else { |
88c26d5e | 1972 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, |
e34d0e58 | 1973 | { ACCEPT => $in_accept , REJECT => "PVEFW-reject" }, |
e523d2bb | 1974 | undef, $cluster_conf, $vmfw_conf); |
921dfb33 DM |
1975 | } |
1976 | }; | |
1977 | warn $@ if $@; | |
4e6112f9 | 1978 | } |
3a616aa0 | 1979 | } |
9e15114a DM |
1980 | } |
1981 | ||
b47ecc88 AD |
1982 | sub generate_nfqueue { |
1983 | my ($options) = @_; | |
1984 | ||
73089769 DM |
1985 | if ($options->{ips}) { |
1986 | my $action = "NFQUEUE"; | |
1987 | if ($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
1988 | if (defined($3) && defined($1)) { | |
b47ecc88 | 1989 | $action .= " --queue-balance $1:$3"; |
73089769 | 1990 | } elsif (defined($1)) { |
b47ecc88 AD |
1991 | $action .= " --queue-num $1"; |
1992 | } | |
1993 | } | |
8dc92812 | 1994 | $action .= " --queue-bypass" if $feature_ipset_nomatch; #need kernel 3.10 |
73089769 DM |
1995 | return $action; |
1996 | } else { | |
1997 | return "ACCEPT"; | |
b47ecc88 | 1998 | } |
b47ecc88 AD |
1999 | } |
2000 | ||
da6fc60b | 2001 | sub ruleset_generate_vm_ipsrules { |
a01c32c7 | 2002 | my ($ruleset, $options, $direction, $iface) = @_; |
da6fc60b AD |
2003 | |
2004 | if ($options->{ips} && $direction eq 'IN') { | |
2005 | my $nfqueue = generate_nfqueue($options); | |
2006 | ||
a01c32c7 | 2007 | if (!ruleset_chain_exist($ruleset, "PVEFW-IPS")) { |
da6fc60b AD |
2008 | ruleset_create_chain($ruleset, "PVEFW-IPS"); |
2009 | } | |
2010 | ||
a01c32c7 | 2011 | ruleset_addrule($ruleset, "PVEFW-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue"); |
da6fc60b AD |
2012 | } |
2013 | } | |
2014 | ||
9e15114a | 2015 | sub generate_tap_rules_direction { |
84870b1a | 2016 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $direction, $ipversion) = @_; |
9e15114a DM |
2017 | |
2018 | my $lc_direction = lc($direction); | |
2019 | ||
2020 | my $rules = $vmfw_conf->{rules}; | |
2021 | ||
2022 | my $options = $vmfw_conf->{options}; | |
2023 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
2024 | ||
2025 | my $tapchain = "$iface-$direction"; | |
2026 | ||
b692f42c | 2027 | my $ipfilter_name = compute_ipfilter_ipset_name($netid); |
88c26d5e | 2028 | my $ipfilter_ipset = compute_ipset_chain_name($vmid, $ipfilter_name, $ipversion) |
b692f42c | 2029 | if $vmfw_conf->{ipset}->{$ipfilter_name}; |
808d711d | 2030 | |
a34cfdd0 | 2031 | # create chain with mac and ip filter |
88c26d5e | 2032 | ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction); |
9e15114a | 2033 | |
a34cfdd0 | 2034 | if ($options->{enable}) { |
84870b1a | 2035 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion); |
3a616aa0 | 2036 | |
a34cfdd0 | 2037 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface); |
da6fc60b | 2038 | |
a34cfdd0 DM |
2039 | # implement policy |
2040 | my $policy; | |
ccae0b50 | 2041 | |
a34cfdd0 DM |
2042 | if ($direction eq 'OUT') { |
2043 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
2044 | } else { | |
72f63fde | 2045 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
a34cfdd0 | 2046 | } |
ccae0b50 | 2047 | |
a34cfdd0 DM |
2048 | my $accept = generate_nfqueue($options); |
2049 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
88c26d5e | 2050 | ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, $policy, $loglevel, $accept_action); |
a34cfdd0 DM |
2051 | } else { |
2052 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : 'ACCEPT'; | |
88c26d5e | 2053 | ruleset_add_chain_policy($ruleset, $tapchain, $ipversion, $vmid, 'ACCEPT', $loglevel, $accept_action); |
a34cfdd0 | 2054 | } |
3a616aa0 | 2055 | |
3fa83edf | 2056 | # plug the tap chain to bridge chain |
3cc81077 | 2057 | if ($direction eq 'IN') { |
a01c32c7 DM |
2058 | ruleset_addrule($ruleset, "PVEFW-FWBR-IN", |
2059 | "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain"); | |
3cc81077 | 2060 | } else { |
a01c32c7 DM |
2061 | ruleset_addrule($ruleset, "PVEFW-FWBR-OUT", |
2062 | "-m physdev --physdev-is-bridged --physdev-in $iface -j $tapchain"); | |
3cc81077 | 2063 | } |
3a616aa0 AD |
2064 | } |
2065 | ||
d18c1e2b | 2066 | sub enable_host_firewall { |
aedde2c2 | 2067 | my ($ruleset, $hostfw_conf, $cluster_conf, $ipversion) = @_; |
0bd5f137 | 2068 | |
92e976b3 | 2069 | my $options = $hostfw_conf->{options}; |
63324b09 | 2070 | my $cluster_options = $cluster_conf->{options}; |
92e976b3 | 2071 | my $rules = $hostfw_conf->{rules}; |
35f0c37e | 2072 | my $cluster_rules = $cluster_conf->{rules}; |
178a63be | 2073 | |
3fa83edf | 2074 | # host inbound firewall |
dec84fcd DM |
2075 | my $chain = "PVEFW-HOST-IN"; |
2076 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 2077 | |
178a63be DM |
2078 | my $loglevel = get_option_log_level($options, "log_level_in"); |
2079 | ||
e2943485 | 2080 | ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT"); |
4ac863a6 | 2081 | |
e2943485 | 2082 | ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT'); |
88c26d5e | 2083 | ruleset_chain_add_input_filters($ruleset, $chain, $ipversion, $options, $cluster_conf, $loglevel); |
fb424a00 | 2084 | |
23e888f8 DM |
2085 | # we use RETURN because we need to check also tap rules |
2086 | my $accept_action = 'RETURN'; | |
2087 | ||
cc8dc02f DM |
2088 | ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast |
2089 | ||
35f0c37e DM |
2090 | # add host rules first, so that cluster wide rules can be overwritten |
2091 | foreach my $rule (@$rules, @$cluster_rules) { | |
5383df39 | 2092 | next if !$rule->{enable} || $rule->{errors}; |
35d1d6da | 2093 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
bfc488f6 | 2094 | |
f8b12fff | 2095 | $rule->{iface_in} = $rule->{iface} if $rule->{iface}; |
5383df39 | 2096 | |
1a9978ed DM |
2097 | eval { |
2098 | if ($rule->{type} eq 'group') { | |
aedde2c2 | 2099 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'IN', $accept_action, $ipversion); |
1a9978ed | 2100 | } elsif ($rule->{type} eq 'in') { |
88c26d5e DM |
2101 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, |
2102 | { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, | |
e523d2bb | 2103 | undef, $cluster_conf, $hostfw_conf); |
1a9978ed DM |
2104 | } |
2105 | }; | |
2106 | warn $@ if $@; | |
f8b12fff | 2107 | delete $rule->{iface_in}; |
0bd5f137 | 2108 | } |
eb399cef DM |
2109 | |
2110 | # allow standard traffic for management ipset (includes cluster network) | |
88c26d5e | 2111 | my $mngmnt_ipset_chain = compute_ipset_chain_name(0, "management", $ipversion); |
708ba714 | 2112 | my $mngmntsrc = "-m set --match-set ${mngmnt_ipset_chain} src"; |
eb399cef | 2113 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 8006 -j $accept_action"); # PVE API |
bfc488f6 | 2114 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console |
eb399cef DM |
2115 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy |
2116 | ruleset_addrule($ruleset, $chain, "$mngmntsrc -p tcp --dport 22 -j $accept_action"); # SSH | |
bfc488f6 | 2117 | |
afcd29b3 DM |
2118 | my $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; |
2119 | my $localnet_ver = $cluster_conf->{aliases}->{local_network}->{ipversion}; | |
3bc79f87 | 2120 | |
eb399cef | 2121 | # corosync |
35d1d6da | 2122 | if ($localnet && ($ipversion == $localnet_ver)) { |
c5191f57 | 2123 | my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action"; |
525778d7 DM |
2124 | ruleset_addrule($ruleset, $chain, "-s $localnet -d $localnet $corosync_rule"); |
2125 | ruleset_addrule($ruleset, $chain, "-s $localnet -m addrtype --dst-type MULTICAST $corosync_rule"); | |
3bc79f87 | 2126 | } |
0bd5f137 | 2127 | |
23e888f8 | 2128 | # implement input policy |
63324b09 | 2129 | my $policy = $cluster_options->{policy_in} || 'DROP'; # allow nothing by default |
88c26d5e | 2130 | ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 2131 | |
3fa83edf | 2132 | # host outbound firewall |
aadd745e | 2133 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
2134 | ruleset_create_chain($ruleset, $chain); |
2135 | ||
178a63be DM |
2136 | $loglevel = get_option_log_level($options, "log_level_out"); |
2137 | ||
dec84fcd | 2138 | ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT"); |
e2943485 DM |
2139 | |
2140 | ruleset_chain_add_conn_filters($ruleset, $chain, 'ACCEPT'); | |
2141 | ||
23e888f8 DM |
2142 | # we use RETURN because we may want to check other thigs later |
2143 | $accept_action = 'RETURN'; | |
2144 | ||
cc8dc02f DM |
2145 | ruleset_addrule($ruleset, $chain, "-p igmp -j $accept_action"); # important for multicast |
2146 | ||
35f0c37e DM |
2147 | # add host rules first, so that cluster wide rules can be overwritten |
2148 | foreach my $rule (@$rules, @$cluster_rules) { | |
5383df39 | 2149 | next if !$rule->{enable} || $rule->{errors}; |
35d1d6da | 2150 | next if $rule->{ipversion} && ($rule->{ipversion} != $ipversion); |
5383df39 | 2151 | |
f8b12fff | 2152 | $rule->{iface_out} = $rule->{iface} if $rule->{iface}; |
1a9978ed DM |
2153 | eval { |
2154 | if ($rule->{type} eq 'group') { | |
aedde2c2 | 2155 | ruleset_add_group_rule($ruleset, $cluster_conf, $chain, $rule, 'OUT', $accept_action, $ipversion); |
1a9978ed | 2156 | } elsif ($rule->{type} eq 'out') { |
88c26d5e DM |
2157 | ruleset_generate_rule($ruleset, $chain, $ipversion, |
2158 | $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, | |
e523d2bb | 2159 | undef, $cluster_conf, $hostfw_conf); |
1a9978ed DM |
2160 | } |
2161 | }; | |
2162 | warn $@ if $@; | |
f8b12fff | 2163 | delete $rule->{iface_out}; |
0bd5f137 AD |
2164 | } |
2165 | ||
3bc79f87 | 2166 | # allow standard traffic on cluster network |
35d1d6da | 2167 | if ($localnet && ($ipversion == $localnet_ver)) { |
525778d7 DM |
2168 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 8006 -j $accept_action"); # PVE API |
2169 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 22 -j $accept_action"); # SSH | |
bfc488f6 | 2170 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 5900:5999 -j $accept_action"); # PVE VNC Console |
525778d7 | 2171 | ruleset_addrule($ruleset, $chain, "-d $localnet -p tcp --dport 3128 -j $accept_action"); # SPICE Proxy |
bfc488f6 | 2172 | |
c5191f57 | 2173 | my $corosync_rule = "-p udp --dport 5404:5405 -j $accept_action"; |
525778d7 | 2174 | ruleset_addrule($ruleset, $chain, "-d $localnet $corosync_rule"); |
f573ae2c | 2175 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST $corosync_rule"); |
3bc79f87 DM |
2176 | } |
2177 | ||
23e888f8 | 2178 | # implement output policy |
63324b09 | 2179 | $policy = $cluster_options->{policy_out} || 'ACCEPT'; # allow everything by default |
88c26d5e | 2180 | ruleset_add_chain_policy($ruleset, $chain, $ipversion, 0, $policy, $loglevel, $accept_action); |
6158271d | 2181 | |
dec84fcd DM |
2182 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT"); |
2183 | ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
2184 | } |
2185 | ||
2186 | sub generate_group_rules { | |
aedde2c2 | 2187 | my ($ruleset, $cluster_conf, $group, $ipversion) = @_; |
9d31b418 | 2188 | |
c6f5cc88 | 2189 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 2190 | |
b4deedab DM |
2191 | if (!$rules) { |
2192 | warn "no such security group '$group'\n"; | |
2193 | $rules = []; # create empty chain | |
2194 | } | |
2195 | ||
3fa83edf | 2196 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 2197 | |
3fa83edf | 2198 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 2199 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 2200 | |
92e976b3 DM |
2201 | foreach my $rule (@$rules) { |
2202 | next if $rule->{type} ne 'in'; | |
aedde2c2 | 2203 | next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion; |
88c26d5e DM |
2204 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, |
2205 | { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, | |
2206 | undef, $cluster_conf); | |
9d31b418 AD |
2207 | } |
2208 | ||
3fa83edf | 2209 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 2210 | |
3fa83edf | 2211 | ruleset_create_chain($ruleset, $chain); |
4e6112f9 | 2212 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 2213 | |
92e976b3 DM |
2214 | foreach my $rule (@$rules) { |
2215 | next if $rule->{type} ne 'out'; | |
aedde2c2 | 2216 | next if $rule->{ipversion} && $rule->{ipversion} ne $ipversion; |
92e976b3 DM |
2217 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to |
2218 | # check also other tap rules later | |
88c26d5e DM |
2219 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule, |
2220 | { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, | |
2221 | undef, $cluster_conf); | |
9d31b418 | 2222 | } |
9d31b418 AD |
2223 | } |
2224 | ||
51bae274 DM |
2225 | my $MAX_NETS = 32; |
2226 | my $valid_netdev_names = {}; | |
2227 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
2228 | $valid_netdev_names->{"net$i"} = 1; | |
2229 | } | |
5e1267a5 | 2230 | |
51bae274 | 2231 | sub parse_fw_rule { |
a523e057 | 2232 | my ($prefix, $line, $cluster_conf, $fw_conf, $rule_env, $verbose) = @_; |
5e1267a5 | 2233 | |
d4cda423 DM |
2234 | my $orig_line = $line; |
2235 | ||
6d9246e7 DM |
2236 | my $rule = {}; |
2237 | ||
11bac5c2 | 2238 | # we can add single line comments to the end of the rule |
6d9246e7 DM |
2239 | if ($line =~ s/#\s*(.*?)\s*$//) { |
2240 | $rule->{comment} = decode('utf8', $1); | |
2241 | } | |
11bac5c2 DM |
2242 | |
2243 | # we can disable a rule when prefixed with '|' | |
ea9e5116 | 2244 | |
6d9246e7 | 2245 | $rule->{enable} = $line =~ s/^\|// ? 0 : 1; |
51bae274 | 2246 | |
dba740a9 DM |
2247 | $line =~ s/^(\S+)\s+(\S+)\s*// || |
2248 | die "unable to parse rule: $line\n"; | |
6d9246e7 DM |
2249 | |
2250 | $rule->{type} = lc($1); | |
2251 | $rule->{action} = $2; | |
2252 | ||
2253 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
2254 | if ($rule->{action} =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
2255 | $rule->{macro} = $1; | |
2256 | $rule->{action} = $2; | |
92e976b3 | 2257 | } |
51bae274 DM |
2258 | } |
2259 | ||
dba740a9 DM |
2260 | while (length($line)) { |
2261 | if ($line =~ s/^-i (\S+)\s*//) { | |
6d9246e7 | 2262 | $rule->{iface} = $1; |
dba740a9 DM |
2263 | next; |
2264 | } | |
51bae274 | 2265 | |
6d9246e7 | 2266 | last if $rule->{type} eq 'group'; |
51bae274 | 2267 | |
dba740a9 | 2268 | if ($line =~ s/^-p (\S+)\s*//) { |
6d9246e7 | 2269 | $rule->{proto} = $1; |
dba740a9 DM |
2270 | next; |
2271 | } | |
6d9246e7 | 2272 | |
dba740a9 | 2273 | if ($line =~ s/^-dport (\S+)\s*//) { |
6d9246e7 | 2274 | $rule->{dport} = $1; |
dba740a9 DM |
2275 | next; |
2276 | } | |
6d9246e7 | 2277 | |
dba740a9 | 2278 | if ($line =~ s/^-sport (\S+)\s*//) { |
6d9246e7 | 2279 | $rule->{sport} = $1; |
dba740a9 DM |
2280 | next; |
2281 | } | |
2282 | if ($line =~ s/^-source (\S+)\s*//) { | |
6d9246e7 | 2283 | $rule->{source} = $1; |
dba740a9 DM |
2284 | next; |
2285 | } | |
2286 | if ($line =~ s/^-dest (\S+)\s*//) { | |
6d9246e7 | 2287 | $rule->{dest} = $1; |
dba740a9 DM |
2288 | next; |
2289 | } | |
51bae274 | 2290 | |
dba740a9 DM |
2291 | last; |
2292 | } | |
ba791b1f | 2293 | |
dba740a9 | 2294 | die "unable to parse rule parameters: $line\n" if length($line); |
51bae274 | 2295 | |
a523e057 | 2296 | $rule = verify_rule($rule, $cluster_conf, $fw_conf, $rule_env, 1); |
d4cda423 DM |
2297 | if ($verbose && $rule->{errors}) { |
2298 | warn "$prefix - errors in rule parameters: $orig_line\n"; | |
2299 | foreach my $p (keys %{$rule->{errors}}) { | |
2300 | warn " $p: $rule->{errors}->{$p}\n"; | |
2301 | } | |
2302 | } | |
6d9246e7 DM |
2303 | |
2304 | return $rule; | |
51bae274 DM |
2305 | } |
2306 | ||
2d404ffc | 2307 | sub parse_vmfw_option { |
85c6eaed DM |
2308 | my ($line) = @_; |
2309 | ||
2310 | my ($opt, $value); | |
2311 | ||
178a63be DM |
2312 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
2313 | ||
6bafd113 | 2314 | if ($line =~ m/^(enable|dhcp|macfilter|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
2315 | $opt = lc($1); |
2316 | $value = int($2); | |
178a63be DM |
2317 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
2318 | $opt = lc($1); | |
2319 | $value = $2 ? lc($3) : ''; | |
72f63fde | 2320 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
2321 | $opt = lc($1); |
2322 | $value = uc($3); | |
b47ecc88 AD |
2323 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
2324 | $opt = lc($1); | |
2325 | $value = $2; | |
9c6b6efd | 2326 | } else { |
85c6eaed DM |
2327 | die "can't parse option '$line'\n" |
2328 | } | |
2329 | ||
2330 | return ($opt, $value); | |
2331 | } | |
2332 | ||
2d404ffc DM |
2333 | sub parse_hostfw_option { |
2334 | my ($line) = @_; | |
2335 | ||
2336 | my ($opt, $value); | |
2337 | ||
2338 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
2339 | ||
c50a5a68 | 2340 | if ($line =~ m/^(enable|nosmurfs|tcpflags):\s*(0|1)\s*$/i) { |
2d404ffc DM |
2341 | $opt = lc($1); |
2342 | $value = int($2); | |
178a63be | 2343 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
2344 | $opt = lc($1); |
2345 | $value = $2 ? lc($3) : ''; | |
28c082a1 | 2346 | } elsif ($line =~ m/^(nf_conntrack_max|nf_conntrack_tcp_timeout_established):\s*(\d+)\s*$/i) { |
490cdead DM |
2347 | $opt = lc($1); |
2348 | $value = int($2); | |
2d404ffc | 2349 | } else { |
2d404ffc DM |
2350 | die "can't parse option '$line'\n" |
2351 | } | |
2352 | ||
2353 | return ($opt, $value); | |
2354 | } | |
2355 | ||
c6f5cc88 DM |
2356 | sub parse_clusterfw_option { |
2357 | my ($line) = @_; | |
2358 | ||
2359 | my ($opt, $value); | |
2360 | ||
72d055fc | 2361 | if ($line =~ m/^(enable):\s*(\d+)\s*$/i) { |
c6f5cc88 DM |
2362 | $opt = lc($1); |
2363 | $value = int($2); | |
72d055fc AG |
2364 | if (($value > 1) && ((time() - $value) > 60)) { |
2365 | $value = 0 | |
2366 | } | |
63324b09 DM |
2367 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2368 | $opt = lc($1); | |
2369 | $value = uc($3); | |
c6f5cc88 | 2370 | } else { |
c6f5cc88 DM |
2371 | die "can't parse option '$line'\n" |
2372 | } | |
2373 | ||
2374 | return ($opt, $value); | |
2375 | } | |
2376 | ||
6c221576 DM |
2377 | sub resolve_alias { |
2378 | my ($clusterfw_conf, $fw_conf, $cidr) = @_; | |
2379 | ||
6d959e3f | 2380 | my $alias = lc($cidr); |
04f5088f | 2381 | my $e = $fw_conf ? $fw_conf->{aliases}->{$alias} : undef; |
6d959e3f | 2382 | $e = $clusterfw_conf->{aliases}->{$alias} if !$e && $clusterfw_conf; |
6c221576 | 2383 | |
6d959e3f DM |
2384 | die "no such alias '$cidr'\n" if !$e;; |
2385 | ||
2386 | return wantarray ? ($e->{cidr}, $e->{ipversion}) : $e->{cidr}; | |
6c221576 DM |
2387 | } |
2388 | ||
ae029a88 DM |
2389 | sub parse_ip_or_cidr { |
2390 | my ($cidr) = @_; | |
2391 | ||
2392 | my $ipversion; | |
2393 | ||
2394 | if ($cidr =~ m!^(?:$IPV6RE)(/(\d+))?$!) { | |
2395 | $cidr =~ s|/128$||; | |
2396 | $ipversion = 6; | |
2397 | } elsif ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) { | |
2398 | $cidr =~ s|/32$||; | |
2399 | $ipversion = 4; | |
2400 | } else { | |
2401 | die "value does not look like a valid IP address or CIDR network\n"; | |
2402 | } | |
2403 | ||
2404 | return wantarray ? ($cidr, $ipversion) : $cidr; | |
2405 | } | |
2406 | ||
e76a9f53 | 2407 | sub parse_alias { |
92e1209b AD |
2408 | my ($line) = @_; |
2409 | ||
81d574a7 DM |
2410 | # we can add single line comments to the end of the line |
2411 | my $comment = decode('utf8', $1) if $line =~ s/\s*#\s*(.*?)\s*$//; | |
2412 | ||
92e1209b | 2413 | if ($line =~ m/^(\S+)\s(\S+)$/) { |
81d574a7 | 2414 | my ($name, $cidr) = ($1, $2); |
ae029a88 DM |
2415 | my $ipversion; |
2416 | ||
2417 | ($cidr, $ipversion) = parse_ip_or_cidr($cidr); | |
2418 | ||
81d574a7 DM |
2419 | my $data = { |
2420 | name => $name, | |
2421 | cidr => $cidr, | |
70e524eb | 2422 | ipversion => $ipversion, |
81d574a7 DM |
2423 | }; |
2424 | $data->{comment} = $comment if $comment; | |
2425 | return $data; | |
92e1209b AD |
2426 | } |
2427 | ||
81d574a7 | 2428 | return undef; |
92e1209b AD |
2429 | } |
2430 | ||
e5cd1ee0 | 2431 | sub generic_fw_config_parser { |
1210ae94 | 2432 | my ($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env) = @_; |
5e1267a5 | 2433 | |
51bae274 DM |
2434 | my $section; |
2435 | my $group; | |
2436 | ||
1210ae94 | 2437 | my $res = $empty_conf; |
6158271d | 2438 | |
51bae274 DM |
2439 | while (defined(my $line = <$fh>)) { |
2440 | next if $line =~ m/^#/; | |
2441 | next if $line =~ m/^\s*$/; | |
2442 | ||
c8c534f7 DM |
2443 | chomp $line; |
2444 | ||
961b4928 DM |
2445 | my $linenr = $fh->input_line_number(); |
2446 | my $prefix = "$filename (line $linenr)"; | |
2447 | ||
1210ae94 | 2448 | if ($empty_conf->{options} && ($line =~ m/^\[options\]$/i)) { |
c6f5cc88 DM |
2449 | $section = 'options'; |
2450 | next; | |
2451 | } | |
2452 | ||
1210ae94 | 2453 | if ($empty_conf->{aliases} && ($line =~ m/^\[aliases\]$/i)) { |
92e1209b AD |
2454 | $section = 'aliases'; |
2455 | next; | |
2456 | } | |
2457 | ||
1210ae94 | 2458 | if ($empty_conf->{groups} && ($line =~ m/^\[group\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) { |
c6f5cc88 | 2459 | $section = 'groups'; |
92e976b3 | 2460 | $group = lc($1); |
0d22acb3 | 2461 | my $comment = $2; |
351052d1 DM |
2462 | eval { |
2463 | die "security group name too long\n" if length($group) > $max_group_name_length; | |
2464 | die "invalid security group name '$group'\n" if $group !~ m/^${security_group_name_pattern}$/; | |
2465 | }; | |
2466 | if (my $err = $@) { | |
2467 | ($section, $group, $comment) = undef; | |
2468 | warn "$prefix: $err"; | |
2469 | next; | |
2470 | } | |
2471 | ||
c85c87f9 | 2472 | $res->{$section}->{$group} = []; |
649e4d57 DM |
2473 | $res->{group_comments}->{$group} = decode('utf8', $comment) |
2474 | if $comment; | |
51bae274 DM |
2475 | next; |
2476 | } | |
34cdedfa | 2477 | |
1210ae94 | 2478 | if ($empty_conf->{rules} && ($line =~ m/^\[rules\]$/i)) { |
c6f5cc88 DM |
2479 | $section = 'rules'; |
2480 | next; | |
2481 | } | |
cbb5d6f3 | 2482 | |
1210ae94 | 2483 | if ($empty_conf->{ipset} && ($line =~ m/^\[ipset\s+(\S+)\]\s*(?:#\s*(.*?)\s*)?$/i)) { |
34cdedfa AD |
2484 | $section = 'ipset'; |
2485 | $group = lc($1); | |
d72c631c | 2486 | my $comment = $2; |
351052d1 DM |
2487 | eval { |
2488 | die "ipset name too long\n" if length($group) > $max_ipset_name_length; | |
2489 | die "invalid ipset name '$group'\n" if $group !~ m/^${ipset_name_pattern}$/; | |
2490 | }; | |
2491 | if (my $err = $@) { | |
2492 | ($section, $group, $comment) = undef; | |
2493 | warn "$prefix: $err"; | |
2494 | next; | |
2495 | } | |
2496 | ||
c85c87f9 | 2497 | $res->{$section}->{$group} = []; |
e34d0e58 | 2498 | $res->{ipset_comments}->{$group} = decode('utf8', $comment) |
649e4d57 | 2499 | if $comment; |
34cdedfa AD |
2500 | next; |
2501 | } | |
2502 | ||
c6f5cc88 | 2503 | if (!$section) { |
cbb5d6f3 | 2504 | warn "$prefix: skip line - no section\n"; |
51bae274 DM |
2505 | next; |
2506 | } | |
2507 | ||
c6f5cc88 DM |
2508 | if ($section eq 'options') { |
2509 | eval { | |
1210ae94 DM |
2510 | my ($opt, $value); |
2511 | if ($rule_env eq 'cluster') { | |
2512 | ($opt, $value) = parse_clusterfw_option($line); | |
2513 | } elsif ($rule_env eq 'host') { | |
2514 | ($opt, $value) = parse_hostfw_option($line); | |
2515 | } else { | |
2516 | ($opt, $value) = parse_vmfw_option($line); | |
2517 | } | |
c6f5cc88 DM |
2518 | $res->{options}->{$opt} = $value; |
2519 | }; | |
2520 | warn "$prefix: $@" if $@; | |
92e1209b AD |
2521 | } elsif ($section eq 'aliases') { |
2522 | eval { | |
e76a9f53 | 2523 | my $data = parse_alias($line); |
81d574a7 | 2524 | $res->{aliases}->{lc($data->{name})} = $data; |
92e1209b AD |
2525 | }; |
2526 | warn "$prefix: $@" if $@; | |
c6f5cc88 DM |
2527 | } elsif ($section eq 'rules') { |
2528 | my $rule; | |
1210ae94 | 2529 | eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, $res, $rule_env, $verbose); }; |
c6f5cc88 DM |
2530 | if (my $err = $@) { |
2531 | warn "$prefix: $err"; | |
2532 | next; | |
2533 | } | |
2534 | push @{$res->{$section}}, $rule; | |
2535 | } elsif ($section eq 'groups') { | |
34cdedfa | 2536 | my $rule; |
1210ae94 | 2537 | eval { $rule = parse_fw_rule($prefix, $line, $cluster_conf, undef, 'group', $verbose); }; |
34cdedfa AD |
2538 | if (my $err = $@) { |
2539 | warn "$prefix: $err"; | |
2540 | next; | |
2541 | } | |
3f95d14a | 2542 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a | 2543 | } elsif ($section eq 'ipset') { |
9d6f90e6 DM |
2544 | # we can add single line comments to the end of the rule |
2545 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; | |
2546 | ||
30f1b100 | 2547 | $line =~ m/^(\!)?\s*(\S+)\s*$/; |
2a052ee3 | 2548 | my $nomatch = $1; |
9d6f90e6 | 2549 | my $cidr = $2; |
d46b1ef6 DM |
2550 | my $errors; |
2551 | ||
2552 | if ($nomatch && !$feature_ipset_nomatch) { | |
2553 | $errors->{nomatch} = "nomatch not supported by kernel"; | |
2554 | } | |
2a052ee3 | 2555 | |
4803b296 DM |
2556 | eval { |
2557 | if ($cidr =~ m/^${ip_alias_pattern}$/) { | |
2558 | resolve_alias($cluster_conf, $res, $cidr); # make sure alias exists | |
2559 | } else { | |
ae029a88 | 2560 | $cidr = parse_ip_or_cidr($cidr); |
92e1209b | 2561 | } |
4803b296 DM |
2562 | }; |
2563 | if (my $err = $@) { | |
c8c534f7 | 2564 | chomp $err; |
d46b1ef6 | 2565 | $errors->{cidr} = $err; |
2a052ee3 | 2566 | } |
2a052ee3 | 2567 | |
e34d0e58 | 2568 | my $entry = { cidr => $cidr }; |
9d6f90e6 DM |
2569 | $entry->{nomatch} = 1 if $nomatch; |
2570 | $entry->{comment} = $comment if $comment; | |
d46b1ef6 | 2571 | $entry->{errors} = $errors if $errors; |
e34d0e58 | 2572 | |
c8c534f7 | 2573 | if ($verbose && $errors) { |
9a3061c7 | 2574 | warn "$prefix - errors in ipset '$group': $line\n"; |
c8c534f7 DM |
2575 | foreach my $p (keys %{$errors}) { |
2576 | warn " $p: $errors->{$p}\n"; | |
2577 | } | |
2578 | } | |
2579 | ||
9d6f90e6 | 2580 | push @{$res->{$section}->{$group}}, $entry; |
1210ae94 DM |
2581 | } else { |
2582 | warn "$prefix: skip line - unknown section\n"; | |
2583 | next; | |
51bae274 | 2584 | } |
5e1267a5 DM |
2585 | } |
2586 | ||
2587 | return $res; | |
2588 | } | |
2589 | ||
e5cd1ee0 | 2590 | sub parse_hostfw_config { |
1210ae94 DM |
2591 | my ($filename, $fh, $cluster_conf, $verbose) = @_; |
2592 | ||
2593 | my $empty_conf = { rules => [], options => {}}; | |
2594 | ||
e5cd1ee0 | 2595 | return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, 'host'); |
1210ae94 DM |
2596 | } |
2597 | ||
e5cd1ee0 | 2598 | sub parse_vmfw_config { |
1210ae94 DM |
2599 | my ($filename, $fh, $cluster_conf, $rule_env, $verbose) = @_; |
2600 | ||
2601 | my $empty_conf = { | |
2602 | rules => [], | |
2603 | options => {}, | |
2604 | aliases => {}, | |
2605 | ipset => {} , | |
2606 | ipset_comments => {}, | |
2607 | }; | |
2608 | ||
e5cd1ee0 | 2609 | return generic_fw_config_parser($filename, $fh, $verbose, $cluster_conf, $empty_conf, $rule_env); |
1210ae94 DM |
2610 | } |
2611 | ||
e5cd1ee0 | 2612 | sub parse_clusterfw_config { |
1210ae94 DM |
2613 | my ($filename, $fh, $verbose) = @_; |
2614 | ||
2615 | my $section; | |
2616 | my $group; | |
2617 | ||
2618 | my $empty_conf = { | |
2619 | rules => [], | |
2620 | options => {}, | |
2621 | aliases => {}, | |
2622 | groups => {}, | |
2623 | group_comments => {}, | |
2624 | ipset => {} , | |
2625 | ipset_comments => {}, | |
2626 | }; | |
2627 | ||
e5cd1ee0 | 2628 | return generic_fw_config_parser($filename, $fh, $verbose, $empty_conf, $empty_conf, 'cluster'); |
1210ae94 DM |
2629 | } |
2630 | ||
06320eb0 DM |
2631 | sub run_locked { |
2632 | my ($code, @param) = @_; | |
2633 | ||
2634 | my $timeout = 10; | |
2635 | ||
2636 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
2637 | ||
2638 | die $@ if $@; | |
2639 | ||
2640 | return $res; | |
2641 | } | |
2642 | ||
5e1267a5 DM |
2643 | sub read_local_vm_config { |
2644 | ||
5e1267a5 | 2645 | my $qemu = {}; |
3b4882dc | 2646 | my $lxc = {}; |
5e1267a5 | 2647 | |
fdefeeab | 2648 | my $vmdata = { qemu => $qemu, lxc => $lxc }; |
5e1267a5 | 2649 | |
c8301d63 DM |
2650 | my $vmlist = PVE::Cluster::get_vmlist(); |
2651 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
2652 | my $ids = $vmlist->{ids}; | |
2653 | ||
2654 | foreach my $vmid (keys %$ids) { | |
2655 | next if !$vmid; # skip VE0 | |
2656 | my $d = $ids->{$vmid}; | |
2657 | next if !$d->{node} || $d->{node} ne $nodename; | |
2658 | next if !$d->{type}; | |
fdefeeab | 2659 | if ($d->{type} eq 'qemu') { |
d9fee004 DM |
2660 | if ($have_qemu_server) { |
2661 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); | |
2662 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2663 | $qemu->{$vmid} = $conf; | |
2664 | } | |
c8301d63 | 2665 | } |
3b4882dc AG |
2666 | } elsif ($d->{type} eq 'lxc') { |
2667 | if ($have_lxc) { | |
2668 | my $cfspath = PVE::LXC::cfs_config_path($vmid); | |
2669 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2670 | $lxc->{$vmid} = $conf; | |
2671 | } | |
2672 | } | |
2673 | } | |
5e1267a5 | 2674 | } |
d9fee004 | 2675 | |
5e1267a5 DM |
2676 | return $vmdata; |
2677 | }; | |
2678 | ||
e7b35711 | 2679 | sub load_vmfw_conf { |
a523e057 | 2680 | my ($cluster_conf, $rule_env, $vmid, $dir, $verbose) = @_; |
e7b35711 DM |
2681 | |
2682 | my $vmfw_conf = {}; | |
2683 | ||
21053409 | 2684 | $dir = $pvefw_conf_dir if !defined($dir); |
8aef5177 DM |
2685 | |
2686 | my $filename = "$dir/$vmid.fw"; | |
e7b35711 | 2687 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 2688 | $vmfw_conf = parse_vmfw_config($filename, $fh, $cluster_conf, $rule_env, $verbose); |
708ba714 | 2689 | $vmfw_conf->{vmid} = $vmid; |
e7b35711 DM |
2690 | } |
2691 | ||
2692 | return $vmfw_conf; | |
2693 | } | |
2694 | ||
464f933e | 2695 | my $format_rules = sub { |
dba740a9 | 2696 | my ($rules, $allow_iface) = @_; |
464f933e DM |
2697 | |
2698 | my $raw = ''; | |
2699 | ||
2700 | foreach my $rule (@$rules) { | |
c14dacdf | 2701 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out' || $rule->{type} eq 'group') { |
464f933e DM |
2702 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; |
2703 | $raw .= uc($rule->{type}); | |
7ca36671 DM |
2704 | if ($rule->{macro}) { |
2705 | $raw .= " $rule->{macro}($rule->{action})"; | |
2706 | } else { | |
2707 | $raw .= " " . $rule->{action}; | |
2708 | } | |
dba740a9 DM |
2709 | if ($allow_iface && $rule->{iface}) { |
2710 | $raw .= " -i $rule->{iface}"; | |
2711 | } | |
c14dacdf DM |
2712 | |
2713 | if ($rule->{type} ne 'group') { | |
dba740a9 DM |
2714 | $raw .= " -source $rule->{source}" if $rule->{source}; |
2715 | $raw .= " -dest $rule->{dest}" if $rule->{dest}; | |
2716 | $raw .= " -p $rule->{proto}" if $rule->{proto}; | |
2717 | $raw .= " -dport $rule->{dport}" if $rule->{dport}; | |
2718 | $raw .= " -sport $rule->{sport}" if $rule->{sport}; | |
c14dacdf DM |
2719 | } |
2720 | ||
cbb5d6f3 | 2721 | $raw .= " # " . encode('utf8', $rule->{comment}) |
464f933e DM |
2722 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; |
2723 | $raw .= "\n"; | |
2724 | } else { | |
c14dacdf | 2725 | die "unknown rule type '$rule->{type}'"; |
464f933e DM |
2726 | } |
2727 | } | |
2728 | ||
2729 | return $raw; | |
2730 | }; | |
2731 | ||
2732 | my $format_options = sub { | |
68c90e21 DM |
2733 | my ($options) = @_; |
2734 | ||
2735 | my $raw = ''; | |
464f933e DM |
2736 | |
2737 | $raw .= "[OPTIONS]\n\n"; | |
2738 | foreach my $opt (keys %$options) { | |
2739 | $raw .= "$opt: $options->{$opt}\n"; | |
2740 | } | |
2741 | $raw .= "\n"; | |
68c90e21 DM |
2742 | |
2743 | return $raw; | |
464f933e DM |
2744 | }; |
2745 | ||
0d5f0a0f DM |
2746 | my $format_aliases = sub { |
2747 | my ($aliases) = @_; | |
2748 | ||
2749 | my $raw = ''; | |
2750 | ||
2751 | $raw .= "[ALIASES]\n\n"; | |
2752 | foreach my $k (keys %$aliases) { | |
81d574a7 DM |
2753 | my $e = $aliases->{$k}; |
2754 | $raw .= "$e->{name} $e->{cidr}"; | |
2755 | $raw .= " # " . encode('utf8', $e->{comment}) | |
2756 | if $e->{comment} && $e->{comment} !~ m/^\s*$/; | |
2757 | $raw .= "\n"; | |
0d5f0a0f DM |
2758 | } |
2759 | $raw .= "\n"; | |
2760 | ||
2761 | return $raw; | |
2762 | }; | |
2763 | ||
1210ae94 DM |
2764 | my $format_ipsets = sub { |
2765 | my ($fw_conf) = @_; | |
2766 | ||
9d6f90e6 DM |
2767 | my $raw = ''; |
2768 | ||
1210ae94 DM |
2769 | foreach my $ipset (sort keys %{$fw_conf->{ipset}}) { |
2770 | if (my $comment = $fw_conf->{ipset_comments}->{$ipset}) { | |
2771 | my $utf8comment = encode('utf8', $comment); | |
2772 | $raw .= "[IPSET $ipset] # $utf8comment\n\n"; | |
2773 | } else { | |
2774 | $raw .= "[IPSET $ipset]\n\n"; | |
2775 | } | |
2776 | my $options = $fw_conf->{ipset}->{$ipset}; | |
6e299ae3 | 2777 | |
1210ae94 DM |
2778 | my $nethash = {}; |
2779 | foreach my $entry (@$options) { | |
2780 | $nethash->{$entry->{cidr}} = $entry; | |
2781 | } | |
2782 | ||
2783 | foreach my $cidr (sort keys %$nethash) { | |
2784 | my $entry = $nethash->{$cidr}; | |
2785 | my $line = $entry->{nomatch} ? '!' : ''; | |
2786 | $line .= $entry->{cidr}; | |
2787 | $line .= " # " . encode('utf8', $entry->{comment}) | |
2788 | if $entry->{comment} && $entry->{comment} !~ m/^\s*$/; | |
2789 | $raw .= "$line\n"; | |
2790 | } | |
2791 | ||
2792 | $raw .= "\n"; | |
9d6f90e6 | 2793 | } |
e34d0e58 | 2794 | |
9d6f90e6 DM |
2795 | return $raw; |
2796 | }; | |
2797 | ||
464f933e DM |
2798 | sub save_vmfw_conf { |
2799 | my ($vmid, $vmfw_conf) = @_; | |
2800 | ||
2801 | my $raw = ''; | |
2802 | ||
2803 | my $options = $vmfw_conf->{options}; | |
89ea63c8 | 2804 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
cbb5d6f3 | 2805 | |
e76a9f53 | 2806 | my $aliases = $vmfw_conf->{aliases}; |
89ea63c8 | 2807 | $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases); |
e76a9f53 | 2808 | |
89ea63c8 | 2809 | $raw .= &$format_ipsets($vmfw_conf) if $vmfw_conf->{ipset}; |
1210ae94 | 2810 | |
8824b2f0 | 2811 | my $rules = $vmfw_conf->{rules} || []; |
89ea63c8 | 2812 | if ($rules && scalar(@$rules)) { |
464f933e DM |
2813 | $raw .= "[RULES]\n\n"; |
2814 | $raw .= &$format_rules($rules, 1); | |
2815 | $raw .= "\n"; | |
2816 | } | |
2817 | ||
21053409 DM |
2818 | mkdir $pvefw_conf_dir; |
2819 | ||
2820 | my $filename = "$pvefw_conf_dir/$vmid.fw"; | |
464f933e DM |
2821 | PVE::Tools::file_set_contents($filename, $raw); |
2822 | } | |
2823 | ||
edee9035 AG |
2824 | sub remove_vmfw_conf { |
2825 | my ($vmid) = @_; | |
2826 | ||
2827 | my $vmfw_conffile = "$pvefw_conf_dir/$vmid.fw"; | |
2828 | ||
2829 | unlink $vmfw_conffile; | |
2830 | } | |
2831 | ||
5471ff7c AG |
2832 | sub clone_vmfw_conf { |
2833 | my ($vmid, $newid) = @_; | |
2834 | ||
2835 | my $sourcevm_conffile = "$pvefw_conf_dir/$vmid.fw"; | |
2836 | my $clonevm_conffile = "$pvefw_conf_dir/$newid.fw"; | |
2837 | ||
2838 | if (-f $clonevm_conffile) { | |
2839 | unlink $clonevm_conffile; | |
2840 | } | |
2841 | if (-f $sourcevm_conffile) { | |
2842 | my $data = PVE::Tools::file_get_contents($sourcevm_conffile); | |
2843 | PVE::Tools::file_set_contents($clonevm_conffile, $data); | |
2844 | } | |
2845 | } | |
2846 | ||
6fc63ffd | 2847 | sub read_vm_firewall_configs { |
a523e057 | 2848 | my ($cluster_conf, $vmdata, $dir, $verbose) = @_; |
8aef5177 | 2849 | |
6fc63ffd | 2850 | my $vmfw_configs = {}; |
c8301d63 | 2851 | |
b6b8e6ad | 2852 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
a523e057 | 2853 | my $vmfw_conf = load_vmfw_conf($cluster_conf, 'vm', $vmid, $dir, $verbose); |
b6b8e6ad DM |
2854 | next if !$vmfw_conf->{options}; # skip if file does not exists |
2855 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
2856 | } | |
3b4882dc AG |
2857 | foreach my $vmid (keys %{$vmdata->{lxc}}) { |
2858 | my $vmfw_conf = load_vmfw_conf($cluster_conf, 'ct', $vmid, $dir, $verbose); | |
2859 | next if !$vmfw_conf->{options}; # skip if file does not exists | |
2860 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
2861 | } | |
5e1267a5 | 2862 | |
6fc63ffd | 2863 | return $vmfw_configs; |
5e1267a5 DM |
2864 | } |
2865 | ||
2d404ffc DM |
2866 | sub get_option_log_level { |
2867 | my ($options, $k) = @_; | |
2868 | ||
2869 | my $v = $options->{$k}; | |
178a63be | 2870 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
2871 | |
2872 | return undef if $v eq '' || $v eq 'nolog'; | |
2873 | ||
2874 | $v = $log_level_hash->{$v} if defined($log_level_hash->{$v}); | |
2875 | ||
2876 | return $v if ($v >= 0) && ($v <= 7); | |
2877 | ||
2878 | warn "unknown log level ($k = '$v')\n"; | |
2879 | ||
2880 | return undef; | |
2881 | } | |
2882 | ||
d8f2505e | 2883 | sub generate_std_chains { |
db8a955f DM |
2884 | my ($ruleset, $options, $ipversion) = @_; |
2885 | ||
2886 | my $std_chains = $pve_std_chains->{$ipversion} || die "internal error"; | |
cbb5d6f3 | 2887 | |
2d404ffc DM |
2888 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); |
2889 | ||
db8a955f | 2890 | my $chain; |
782c4cde | 2891 | |
db8a955f DM |
2892 | if ($ipversion == 4) { |
2893 | # same as shorewall smurflog. | |
2894 | $chain = 'PVEFW-smurflog'; | |
2895 | $std_chains->{$chain} = []; | |
2896 | ||
2897 | push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2898 | push @{$std_chains->{$chain}}, "-j DROP"; | |
2899 | } | |
2d404ffc DM |
2900 | |
2901 | # same as shorewall logflags action. | |
2902 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde | 2903 | $chain = 'PVEFW-logflags'; |
db8a955f | 2904 | $std_chains->{$chain} = []; |
12f3796e | 2905 | |
782c4cde | 2906 | # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG) |
db8a955f DM |
2907 | push @{$std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; |
2908 | push @{$std_chains->{$chain}}, "-j DROP"; | |
d8f2505e | 2909 | |
db8a955f | 2910 | foreach my $chain (keys %$std_chains) { |
d8f2505e | 2911 | ruleset_create_chain($ruleset, $chain); |
db8a955f | 2912 | foreach my $rule (@{$std_chains->{$chain}}) { |
d8f2505e | 2913 | if (ref($rule)) { |
88c26d5e | 2914 | ruleset_generate_rule($ruleset, $chain, $ipversion, $rule); |
d8f2505e DM |
2915 | } else { |
2916 | ruleset_addrule($ruleset, $chain, $rule); | |
2917 | } | |
2918 | } | |
2919 | } | |
2920 | } | |
2921 | ||
34cdedfa | 2922 | sub generate_ipset_chains { |
88c26d5e | 2923 | my ($ipset_ruleset, $clusterfw_conf, $fw_conf) = @_; #fixme |
34cdedfa | 2924 | |
dd7a13fd | 2925 | foreach my $ipset (keys %{$fw_conf->{ipset}}) { |
34cdedfa | 2926 | |
88c26d5e | 2927 | my $options = $fw_conf->{ipset}->{$ipset}; |
34cdedfa | 2928 | |
88c26d5e DM |
2929 | # remove duplicates |
2930 | my $nethash = {}; | |
2931 | foreach my $entry (@$options) { | |
2932 | next if $entry->{errors}; # skip entries with errors | |
2933 | eval { | |
2934 | my ($cidr, $ver); | |
2935 | if ($entry->{cidr} =~ m/^${ip_alias_pattern}$/) { | |
2936 | ($cidr, $ver) = resolve_alias($clusterfw_conf, $fw_conf, $entry->{cidr}); | |
2937 | } else { | |
2938 | ($cidr, $ver) = parse_ip_or_cidr($entry->{cidr}); | |
2939 | } | |
2940 | #http://backreference.org/2013/03/01/ipv6-address-normalization/ | |
2941 | if ($ver == 6) { | |
ab03c1a7 | 2942 | $cidr = lc(Net::IP::ip_compress_address($cidr, 6)); |
88c26d5e DM |
2943 | $cidr =~ s|/128$||; |
2944 | } else { | |
2945 | $cidr =~ s|/32$||; | |
2946 | } | |
34cdedfa | 2947 | |
88c26d5e DM |
2948 | $nethash->{$ver}->{$cidr} = { cidr => $cidr, nomatch => $entry->{nomatch} }; |
2949 | }; | |
2950 | warn $@ if $@; | |
2951 | } | |
6d959e3f | 2952 | |
88c26d5e DM |
2953 | foreach my $ipversion (4, 6) { |
2954 | my $data = $nethash->{$ipversion}; | |
30f1b100 | 2955 | |
88c26d5e | 2956 | my $name = compute_ipset_chain_name($fw_conf->{vmid}, $ipset, $ipversion); |
6d959e3f | 2957 | |
88c26d5e DM |
2958 | my $hashsize = scalar(@$options); |
2959 | if ($hashsize <= 64) { | |
2960 | $hashsize = 64; | |
2961 | } else { | |
2962 | $hashsize = round_powerof2($hashsize); | |
2963 | } | |
6d959e3f | 2964 | |
88c26d5e | 2965 | my $family = $ipversion == "6" ? "inet6" : "inet"; |
30f1b100 | 2966 | |
88c26d5e | 2967 | $ipset_ruleset->{$name} = ["create $name hash:net family $family hashsize $hashsize maxelem $hashsize"]; |
6d959e3f | 2968 | |
88c26d5e DM |
2969 | foreach my $cidr (sort keys %$data) { |
2970 | my $entry = $data->{$cidr}; | |
6d959e3f | 2971 | |
88c26d5e DM |
2972 | my $cmd = "add $name $cidr"; |
2973 | if ($entry->{nomatch}) { | |
2974 | if ($feature_ipset_nomatch) { | |
2975 | push @{$ipset_ruleset->{$name}}, "$cmd nomatch"; | |
2976 | } else { | |
2977 | warn "ignore !$cidr - nomatch not supported by kernel\n"; | |
2978 | } | |
6d959e3f | 2979 | } else { |
88c26d5e | 2980 | push @{$ipset_ruleset->{$name}}, $cmd; |
6d959e3f | 2981 | } |
9d6f90e6 | 2982 | } |
9d6f90e6 | 2983 | } |
34cdedfa | 2984 | } |
2a052ee3 AD |
2985 | } |
2986 | ||
2987 | sub round_powerof2 { | |
dd7a13fd | 2988 | my ($int) = @_; |
2a052ee3 | 2989 | |
dd7a13fd DM |
2990 | $int--; |
2991 | $int |= $int >> $_ foreach (1,2,4,8,16); | |
2992 | return ++$int; | |
34cdedfa AD |
2993 | } |
2994 | ||
fca39c2c | 2995 | sub load_clusterfw_conf { |
d4cda423 | 2996 | my ($filename, $verbose) = @_; |
8aef5177 DM |
2997 | |
2998 | $filename = $clusterfw_conf_filename if !defined($filename); | |
530c005e | 2999 | |
fca39c2c | 3000 | my $cluster_conf = {}; |
8aef5177 | 3001 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 3002 | $cluster_conf = parse_clusterfw_config($filename, $fh, $verbose); |
51bae274 | 3003 | } |
5e1267a5 | 3004 | |
fca39c2c | 3005 | return $cluster_conf; |
e5d76bde DM |
3006 | } |
3007 | ||
fca39c2c DM |
3008 | sub save_clusterfw_conf { |
3009 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
3010 | |
3011 | my $raw = ''; | |
9c7e0858 | 3012 | |
c6f5cc88 | 3013 | my $options = $cluster_conf->{options}; |
89ea63c8 | 3014 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
9c7e0858 | 3015 | |
0d5f0a0f | 3016 | my $aliases = $cluster_conf->{aliases}; |
89ea63c8 | 3017 | $raw .= &$format_aliases($aliases) if $aliases && scalar(keys %$aliases); |
e34d0e58 | 3018 | |
89ea63c8 | 3019 | $raw .= &$format_ipsets($cluster_conf) if $cluster_conf->{ipset}; |
1210ae94 | 3020 | |
c6f5cc88 | 3021 | my $rules = $cluster_conf->{rules}; |
89ea63c8 | 3022 | if ($rules && scalar(@$rules)) { |
c6f5cc88 | 3023 | $raw .= "[RULES]\n\n"; |
63c91681 | 3024 | $raw .= &$format_rules($rules, 1); |
c6f5cc88 DM |
3025 | $raw .= "\n"; |
3026 | } | |
3027 | ||
89ea63c8 DM |
3028 | if ($cluster_conf->{groups}) { |
3029 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
3030 | my $rules = $cluster_conf->{groups}->{$group}; | |
3031 | if (my $comment = $cluster_conf->{group_comments}->{$group}) { | |
3032 | my $utf8comment = encode('utf8', $comment); | |
3033 | $raw .= "[group $group] # $utf8comment\n\n"; | |
3034 | } else { | |
3035 | $raw .= "[group $group]\n\n"; | |
3036 | } | |
0d22acb3 | 3037 | |
89ea63c8 DM |
3038 | $raw .= &$format_rules($rules, 0); |
3039 | $raw .= "\n"; | |
3040 | } | |
9c7e0858 DM |
3041 | } |
3042 | ||
21053409 | 3043 | mkdir $pvefw_conf_dir; |
fca39c2c | 3044 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); |
9c7e0858 DM |
3045 | } |
3046 | ||
8b27beb9 | 3047 | sub load_hostfw_conf { |
a523e057 | 3048 | my ($cluster_conf, $filename, $verbose) = @_; |
8aef5177 DM |
3049 | |
3050 | $filename = $hostfw_conf_filename if !defined($filename); | |
8b27beb9 DM |
3051 | |
3052 | my $hostfw_conf = {}; | |
8aef5177 | 3053 | if (my $fh = IO::File->new($filename, O_RDONLY)) { |
e5cd1ee0 | 3054 | $hostfw_conf = parse_hostfw_config($filename, $fh, $cluster_conf, $verbose); |
8b27beb9 DM |
3055 | } |
3056 | return $hostfw_conf; | |
3057 | } | |
3058 | ||
63c91681 DM |
3059 | sub save_hostfw_conf { |
3060 | my ($hostfw_conf) = @_; | |
3061 | ||
3062 | my $raw = ''; | |
3063 | ||
3064 | my $options = $hostfw_conf->{options}; | |
89ea63c8 | 3065 | $raw .= &$format_options($options) if $options && scalar(keys %$options); |
cbb5d6f3 | 3066 | |
63c91681 | 3067 | my $rules = $hostfw_conf->{rules}; |
89ea63c8 | 3068 | if ($rules && scalar(@$rules)) { |
63c91681 DM |
3069 | $raw .= "[RULES]\n\n"; |
3070 | $raw .= &$format_rules($rules, 1); | |
3071 | $raw .= "\n"; | |
3072 | } | |
3073 | ||
3074 | PVE::Tools::file_set_contents($hostfw_conf_filename, $raw); | |
3075 | } | |
3076 | ||
e5d76bde | 3077 | sub compile { |
d4cda423 | 3078 | my ($cluster_conf, $hostfw_conf, $vmdata, $verbose) = @_; |
3dfa8a7f | 3079 | |
8aef5177 DM |
3080 | my $vmfw_configs; |
3081 | ||
3082 | if ($vmdata) { # test mode | |
3083 | my $testdir = $vmdata->{testdir} || die "no test directory specified"; | |
3084 | my $filename = "$testdir/cluster.fw"; | |
d4cda423 | 3085 | $cluster_conf = load_clusterfw_conf($filename, $verbose); |
8aef5177 DM |
3086 | |
3087 | $filename = "$testdir/host.fw"; | |
a523e057 | 3088 | $hostfw_conf = load_hostfw_conf($cluster_conf, $filename, $verbose); |
8aef5177 | 3089 | |
a523e057 | 3090 | $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, $testdir, $verbose); |
8aef5177 | 3091 | } else { # normal operation |
d4cda423 | 3092 | $cluster_conf = load_clusterfw_conf(undef, $verbose) if !$cluster_conf; |
8aef5177 | 3093 | |
a523e057 | 3094 | $hostfw_conf = load_hostfw_conf($cluster_conf, undef, $verbose) if !$hostfw_conf; |
8aef5177 DM |
3095 | |
3096 | $vmdata = read_local_vm_config(); | |
a523e057 | 3097 | $vmfw_configs = read_vm_firewall_configs($cluster_conf, $vmdata, undef, $verbose); |
8aef5177 | 3098 | } |
3dfa8a7f | 3099 | |
9268573a | 3100 | my ($ruleset, $ipset_ruleset) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 4, $verbose); |
638c755a AD |
3101 | my ($rulesetv6) = compile_iptables_filter($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, 6, $verbose); |
3102 | ||
3103 | return ($ruleset, $ipset_ruleset, $rulesetv6); | |
9268573a AD |
3104 | } |
3105 | ||
3106 | sub compile_iptables_filter { | |
3107 | my ($cluster_conf, $hostfw_conf, $vmfw_configs, $vmdata, $ipversion, $verbose) = @_; | |
3108 | ||
525778d7 DM |
3109 | my $localnet; |
3110 | if ($cluster_conf->{aliases}->{local_network}) { | |
3111 | $localnet = $cluster_conf->{aliases}->{local_network}->{cidr}; | |
3112 | } else { | |
afcd29b3 DM |
3113 | my $localnet_ver; |
3114 | ($localnet, $localnet_ver) = parse_ip_or_cidr(local_network() || '127.0.0.0/8'); | |
3115 | ||
3116 | $cluster_conf->{aliases}->{local_network} = { | |
3117 | name => 'local_network', cidr => $localnet, ipversion => $localnet_ver }; | |
525778d7 DM |
3118 | } |
3119 | ||
3120 | push @{$cluster_conf->{ipset}->{management}}, { cidr => $localnet }; | |
bfc488f6 | 3121 | |
085fd492 DM |
3122 | return ({}, {}) if !$cluster_conf->{options}->{enable}; |
3123 | ||
3fa83edf DM |
3124 | my $ruleset = {}; |
3125 | ||
dec84fcd DM |
3126 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
3127 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 3128 | |
fadb13dd | 3129 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
e34d0e58 | 3130 | |
8b27beb9 | 3131 | my $hostfw_options = $hostfw_conf->{options} || {}; |
fadb13dd | 3132 | |
88733a74 AD |
3133 | # fixme: what log level should we use here? |
3134 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
3135 | ||
097820b0 | 3136 | ruleset_chain_add_conn_filters($ruleset, "PVEFW-FORWARD", "ACCEPT"); |
88733a74 | 3137 | |
e2943485 | 3138 | ruleset_create_chain($ruleset, "PVEFW-FWBR-IN"); |
88c26d5e | 3139 | ruleset_chain_add_input_filters($ruleset, "PVEFW-FWBR-IN", $ipversion, $hostfw_options, $cluster_conf, $loglevel); |
e2943485 | 3140 | |
d1b41c08 | 3141 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-in fwln+ -j PVEFW-FWBR-IN"); |
e2943485 DM |
3142 | |
3143 | ruleset_create_chain($ruleset, "PVEFW-FWBR-OUT"); | |
d1b41c08 | 3144 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-m physdev --physdev-is-bridged --physdev-out fwln+ -j PVEFW-FWBR-OUT"); |
e2943485 | 3145 | |
db8a955f | 3146 | generate_std_chains($ruleset, $hostfw_options, $ipversion); |
fadb13dd | 3147 | |
6d2ab017 | 3148 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 3149 | |
708ba714 DM |
3150 | my $ipset_ruleset = {}; |
3151 | ||
35d1d6da | 3152 | if ($hostfw_enable) { |
aedde2c2 | 3153 | eval { enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf, $ipversion); }; |
1a9978ed DM |
3154 | warn $@ if $@; # just to be sure - should not happen |
3155 | } | |
3fa83edf | 3156 | |
6158271d | 3157 | # generate firewall rules for QEMU VMs |
3fa83edf | 3158 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
1a9978ed DM |
3159 | eval { |
3160 | my $conf = $vmdata->{qemu}->{$vmid}; | |
3161 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3162 | return if !$vmfw_conf; | |
1a9978ed | 3163 | |
708ba714 DM |
3164 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf); |
3165 | ||
1a9978ed DM |
3166 | foreach my $netid (keys %$conf) { |
3167 | next if $netid !~ m/^net(\d+)$/; | |
3168 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
3169 | next if !$net->{firewall}; | |
3170 | my $iface = "tap${vmid}i$1"; | |
3171 | ||
3172 | my $macaddr = $net->{macaddr}; | |
3173 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
84870b1a | 3174 | $vmfw_conf, $vmid, 'IN', $ipversion); |
1a9978ed | 3175 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
84870b1a | 3176 | $vmfw_conf, $vmid, 'OUT', $ipversion); |
1a9978ed DM |
3177 | } |
3178 | }; | |
3179 | warn $@ if $@; # just to be sure - should not happen | |
3fa83edf | 3180 | } |
c8301d63 | 3181 | |
3b4882dc AG |
3182 | # generate firewall rules for LXC containers |
3183 | foreach my $vmid (keys %{$vmdata->{lxc}}) { | |
3184 | eval { | |
3185 | my $conf = $vmdata->{lxc}->{$vmid}; | |
3186 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
3187 | return if !$vmfw_conf; | |
3188 | ||
3189 | generate_ipset_chains($ipset_ruleset, $cluster_conf, $vmfw_conf); | |
3190 | ||
3191 | if ($vmfw_conf->{options}->{enable}) { | |
3192 | foreach my $netid (keys %$conf) { | |
3193 | next if $netid !~ m/^net(\d+)$/; | |
3194 | my $net = PVE::LXC::parse_lxc_network($conf->{$netid}); | |
3195 | next if !$net->{firewall}; | |
3196 | my $iface = "veth${vmid}i$1"; | |
3197 | my $macaddr = $net->{hwaddr}; | |
3198 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
3199 | $vmfw_conf, $vmid, 'IN', $ipversion); | |
3200 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, | |
3201 | $vmfw_conf, $vmid, 'OUT', $ipversion); | |
3202 | } | |
3203 | } | |
3204 | }; | |
3205 | warn $@ if $@; # just to be sure - should not happen | |
3206 | } | |
3207 | ||
097820b0 AD |
3208 | if(ruleset_chain_exist($ruleset, "PVEFW-IPS")){ |
3209 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j PVEFW-IPS"); | |
3210 | } | |
3211 | ||
708ba714 | 3212 | generate_ipset_chains($ipset_ruleset, undef, $cluster_conf); |
27083984 | 3213 | |
3dfa8a7f | 3214 | return ($ruleset, $ipset_ruleset); |
3fa83edf DM |
3215 | } |
3216 | ||
3217 | sub get_ruleset_status { | |
4bd0a9c4 | 3218 | my ($ruleset, $active_chains, $digest_fn, $verbose) = @_; |
3fa83edf DM |
3219 | |
3220 | my $statushash = {}; | |
3221 | ||
3222 | foreach my $chain (sort keys %$ruleset) { | |
4bd0a9c4 | 3223 | my $sig = &$digest_fn($ruleset->{$chain}); |
9bf7d929 | 3224 | |
3fa83edf DM |
3225 | $statushash->{$chain}->{sig} = $sig; |
3226 | ||
3227 | my $oldsig = $active_chains->{$chain}; | |
3228 | if (!defined($oldsig)) { | |
3229 | $statushash->{$chain}->{action} = 'create'; | |
3230 | } else { | |
3231 | if ($oldsig eq $sig) { | |
3232 | $statushash->{$chain}->{action} = 'exists'; | |
3233 | } else { | |
3234 | $statushash->{$chain}->{action} = 'update'; | |
3235 | } | |
3236 | } | |
3237 | print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose; | |
3238 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
3239 | print "\t$cmd\n" if $verbose; | |
3240 | } | |
3241 | } | |
3242 | ||
3243 | foreach my $chain (sort keys %$active_chains) { | |
3244 | if (!defined($ruleset->{$chain})) { | |
3245 | my $sig = $active_chains->{$chain}; | |
3246 | $statushash->{$chain}->{action} = 'delete'; | |
3247 | $statushash->{$chain}->{sig} = $sig; | |
3248 | print "delete $chain ($sig)\n" if $verbose; | |
3249 | } | |
6158271d | 3250 | } |
2a052ee3 | 3251 | |
3fa83edf DM |
3252 | return $statushash; |
3253 | } | |
3254 | ||
3fa83edf DM |
3255 | sub print_sig_rule { |
3256 | my ($chain, $sig) = @_; | |
3257 | ||
09d5f68e DM |
3258 | # We just use this to store a SHA1 checksum used to detect changes |
3259 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
3260 | } |
3261 | ||
df7cb349 | 3262 | sub get_ruleset_cmdlist { |
17da5c0f | 3263 | my ($ruleset, $verbose, $iptablescmd) = @_; |
3fa83edf | 3264 | |
3fa83edf | 3265 | my $cmdlist = "*filter\n"; # we pass this to iptables-restore; |
cbb5d6f3 | 3266 | |
17da5c0f | 3267 | my ($active_chains, $hooks) = iptables_get_chains($iptablescmd); |
4bd0a9c4 | 3268 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose); |
3fa83edf DM |
3269 | |
3270 | # create missing chains first | |
3271 | foreach my $chain (sort keys %$ruleset) { | |
3272 | my $stat = $statushash->{$chain}; | |
3273 | die "internal error" if !$stat; | |
3274 | next if $stat->{action} ne 'create'; | |
886aba9c | 3275 | |
3fa83edf DM |
3276 | $cmdlist .= ":$chain - [0:0]\n"; |
3277 | } | |
3278 | ||
4bd0a9c4 | 3279 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { |
55fad3b7 DM |
3280 | my $chain = "PVEFW-$h"; |
3281 | if ($ruleset->{$chain} && !$hooks->{$h}) { | |
3282 | $cmdlist .= "-A $h -j $chain\n"; | |
4bd0a9c4 | 3283 | } |
3fa83edf DM |
3284 | } |
3285 | ||
3286 | foreach my $chain (sort keys %$ruleset) { | |
3287 | my $stat = $statushash->{$chain}; | |
3288 | die "internal error" if !$stat; | |
3289 | ||
3290 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
3291 | $cmdlist .= "-F $chain\n"; | |
3292 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
3293 | $cmdlist .= "$cmd\n"; | |
3294 | } | |
3295 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
3296 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 3297 | die "internal error"; # this should not happen |
3fa83edf DM |
3298 | } elsif ($stat->{action} eq 'exists') { |
3299 | # do nothing | |
3300 | } else { | |
3301 | die "internal error - unknown status '$stat->{action}'"; | |
3302 | } | |
3303 | } | |
3304 | ||
f5d28682 DM |
3305 | foreach my $chain (keys %$statushash) { |
3306 | next if $statushash->{$chain}->{action} ne 'delete'; | |
3307 | $cmdlist .= "-F $chain\n"; | |
3308 | } | |
3309 | foreach my $chain (keys %$statushash) { | |
3310 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
3311 | next if $chain eq 'PVEFW-INPUT'; |
3312 | next if $chain eq 'PVEFW-OUTPUT'; | |
3313 | next if $chain eq 'PVEFW-FORWARD'; | |
f5d28682 DM |
3314 | $cmdlist .= "-X $chain\n"; |
3315 | } | |
3316 | ||
3f95d14a | 3317 | my $changes = $cmdlist ne "*filter\n" ? 1 : 0; |
4bd0a9c4 | 3318 | |
3fa83edf DM |
3319 | $cmdlist .= "COMMIT\n"; |
3320 | ||
3f95d14a | 3321 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
3322 | } |
3323 | ||
34cdedfa | 3324 | sub get_ipset_cmdlist { |
dd7a13fd | 3325 | my ($ruleset, $verbose) = @_; |
34cdedfa AD |
3326 | |
3327 | my $cmdlist = ""; | |
3328 | ||
dd7a13fd DM |
3329 | my $delete_cmdlist = ""; |
3330 | ||
4bd0a9c4 DM |
3331 | my $active_chains = ipset_get_chains(); |
3332 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose); | |
34cdedfa | 3333 | |
e34d0e58 | 3334 | # remove stale _swap chains |
30f1b100 DM |
3335 | foreach my $chain (keys %$active_chains) { |
3336 | if ($chain =~ m/^PVEFW-\S+_swap$/) { | |
3337 | $cmdlist .= "destroy $chain\n"; | |
3338 | } | |
3339 | } | |
3340 | ||
c69cf614 | 3341 | foreach my $chain (keys %$ruleset) { |
c69cf614 DM |
3342 | my $stat = $statushash->{$chain}; |
3343 | die "internal error" if !$stat; | |
3344 | ||
3345 | if ($stat->{action} eq 'create') { | |
3346 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
3347 | $cmdlist .= "$cmd\n"; | |
3348 | } | |
3349 | } | |
3350 | } | |
3351 | ||
3352 | foreach my $chain (keys %$ruleset) { | |
6d959e3f DM |
3353 | my $stat = $statushash->{$chain}; |
3354 | die "internal error" if !$stat; | |
34cdedfa | 3355 | |
dd7a13fd DM |
3356 | if ($stat->{action} eq 'update') { |
3357 | my $chain_swap = $chain."_swap"; | |
cbb5d6f3 | 3358 | |
dd7a13fd DM |
3359 | foreach my $cmd (@{$ruleset->{$chain}}) { |
3360 | $cmd =~ s/$chain/$chain_swap/; | |
3361 | $cmdlist .= "$cmd\n"; | |
34cdedfa | 3362 | } |
dd7a13fd DM |
3363 | $cmdlist .= "swap $chain_swap $chain\n"; |
3364 | $cmdlist .= "flush $chain_swap\n"; | |
3365 | $cmdlist .= "destroy $chain_swap\n"; | |
2a052ee3 | 3366 | } |
dd7a13fd | 3367 | } |
3f95d14a | 3368 | |
88c26d5e | 3369 | # the remove unused chains |
c69cf614 | 3370 | foreach my $chain (keys %$statushash) { |
dd7a13fd | 3371 | next if $statushash->{$chain}->{action} ne 'delete'; |
2a052ee3 | 3372 | |
dd7a13fd DM |
3373 | $delete_cmdlist .= "flush $chain\n"; |
3374 | $delete_cmdlist .= "destroy $chain\n"; | |
34cdedfa AD |
3375 | } |
3376 | ||
dd7a13fd | 3377 | my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0; |
cbb5d6f3 | 3378 | |
dd7a13fd | 3379 | return ($cmdlist, $delete_cmdlist, $changes); |
34cdedfa AD |
3380 | } |
3381 | ||
6b9f68a2 | 3382 | sub apply_ruleset { |
17da5c0f | 3383 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6, $verbose) = @_; |
6b9f68a2 DM |
3384 | |
3385 | enable_bridge_firewall(); | |
3386 | ||
cbb5d6f3 | 3387 | my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) = |
81a0bf43 | 3388 | get_ipset_cmdlist($ipset_ruleset, undef, $verbose); |
6b9f68a2 | 3389 | |
81a0bf43 | 3390 | my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose); |
17da5c0f | 3391 | my ($cmdlistv6, $changesv6) = get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables"); |
2a052ee3 | 3392 | |
81a0bf43 DM |
3393 | if ($verbose) { |
3394 | if ($ipset_changes) { | |
3395 | print "ipset changes:\n"; | |
3396 | print $ipset_create_cmdlist if $ipset_create_cmdlist; | |
3397 | print $ipset_delete_cmdlist if $ipset_delete_cmdlist; | |
3398 | } | |
3f95d14a | 3399 | |
81a0bf43 DM |
3400 | if ($changes) { |
3401 | print "iptables changes:\n"; | |
3402 | print $cmdlist; | |
3403 | } | |
17da5c0f AD |
3404 | |
3405 | if ($changesv6) { | |
3406 | print "ip6tables changes:\n"; | |
3407 | print $cmdlistv6; | |
3408 | } | |
81a0bf43 | 3409 | } |
3fa83edf | 3410 | |
259db1e6 DM |
3411 | my $tmpfile = "$pve_fw_status_dir/ipsetcmdlist1"; |
3412 | PVE::Tools::file_set_contents($tmpfile, $ipset_create_cmdlist || ''); | |
3413 | ||
2a052ee3 | 3414 | ipset_restore_cmdlist($ipset_create_cmdlist); |
34cdedfa | 3415 | |
259db1e6 DM |
3416 | $tmpfile = "$pve_fw_status_dir/ip4cmdlist"; |
3417 | PVE::Tools::file_set_contents($tmpfile, $cmdlist || ''); | |
3418 | ||
3fa83edf | 3419 | iptables_restore_cmdlist($cmdlist); |
259db1e6 DM |
3420 | |
3421 | $tmpfile = "$pve_fw_status_dir/ip6cmdlist"; | |
3422 | PVE::Tools::file_set_contents($tmpfile, $cmdlistv6 || ''); | |
3423 | ||
17da5c0f | 3424 | ip6tables_restore_cmdlist($cmdlistv6); |
3fa83edf | 3425 | |
259db1e6 DM |
3426 | $tmpfile = "$pve_fw_status_dir/ipsetcmdlist2"; |
3427 | PVE::Tools::file_set_contents($tmpfile, $ipset_delete_cmdlist || ''); | |
3428 | ||
dd7a13fd | 3429 | ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist; |
2a052ee3 | 3430 | |
6158271d | 3431 | # test: re-read status and check if everything is up to date |
4bd0a9c4 | 3432 | my $active_chains = iptables_get_chains(); |
81a0bf43 | 3433 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0); |
3fa83edf DM |
3434 | |
3435 | my $errors; | |
3436 | foreach my $chain (sort keys %$ruleset) { | |
3437 | my $stat = $statushash->{$chain}; | |
3438 | if ($stat->{action} ne 'exists') { | |
3439 | warn "unable to update chain '$chain'\n"; | |
3440 | $errors = 1; | |
3441 | } | |
3442 | } | |
b6360c3f | 3443 | |
17da5c0f AD |
3444 | my $active_chainsv6 = iptables_get_chains("ip6tables"); |
3445 | my $statushashv6 = get_ruleset_status($rulesetv6, $active_chainsv6, \&iptables_chain_digest, 0); | |
3446 | ||
3447 | foreach my $chain (sort keys %$rulesetv6) { | |
3448 | my $stat = $statushashv6->{$chain}; | |
3449 | if ($stat->{action} ne 'exists') { | |
3450 | warn "unable to update chain '$chain'\n"; | |
3451 | $errors = 1; | |
3452 | } | |
3453 | } | |
3454 | ||
3fa83edf | 3455 | die "unable to apply firewall changes\n" if $errors; |
46a2ac1f AD |
3456 | |
3457 | update_nf_conntrack_max($hostfw_conf); | |
3458 | ||
3459 | update_nf_conntrack_tcp_timeout_established($hostfw_conf); | |
3460 | ||
b6360c3f DM |
3461 | } |
3462 | ||
490cdead DM |
3463 | sub update_nf_conntrack_max { |
3464 | my ($hostfw_conf) = @_; | |
3465 | ||
3466 | my $max = 65536; # reasonable default | |
3467 | ||
3468 | my $options = $hostfw_conf->{options} || {}; | |
3469 | ||
3470 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
3471 | $max = $options->{nf_conntrack_max}; | |
3472 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
3473 | } | |
3474 | ||
3475 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
3476 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
3477 | ||
3478 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
3479 | ||
3480 | if ($current != $max) { | |
3481 | my $hashsize = int($max/4); | |
3482 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
3483 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
3484 | } | |
3485 | } | |
3486 | ||
28c082a1 AD |
3487 | sub update_nf_conntrack_tcp_timeout_established { |
3488 | my ($hostfw_conf) = @_; | |
3489 | ||
3490 | my $options = $hostfw_conf->{options} || {}; | |
3491 | ||
3492 | my $value = defined($options->{nf_conntrack_tcp_timeout_established}) ? $options->{nf_conntrack_tcp_timeout_established} : 432000; | |
3493 | ||
3494 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established", $value); | |
3495 | } | |
3496 | ||
c4a2e5ae DM |
3497 | sub remove_pvefw_chains { |
3498 | ||
7b7b2654 AD |
3499 | PVE::Firewall::remove_pvefw_chains_iptables("iptables"); |
3500 | PVE::Firewall::remove_pvefw_chains_iptables("ip6tables"); | |
3501 | PVE::Firewall::remove_pvefw_chains_ipset(); | |
3502 | ||
3503 | } | |
3504 | ||
3505 | sub remove_pvefw_chains_iptables { | |
3506 | my ($iptablescmd) = @_; | |
3507 | ||
3508 | my ($chash, $hooks) = iptables_get_chains($iptablescmd); | |
c4a2e5ae DM |
3509 | my $cmdlist = "*filter\n"; |
3510 | ||
3511 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { | |
3512 | if ($hooks->{$h}) { | |
3513 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
3514 | } | |
3515 | } | |
cbb5d6f3 | 3516 | |
c4a2e5ae DM |
3517 | foreach my $chain (keys %$chash) { |
3518 | $cmdlist .= "-F $chain\n"; | |
3519 | } | |
3520 | ||
3521 | foreach my $chain (keys %$chash) { | |
3522 | $cmdlist .= "-X $chain\n"; | |
3523 | } | |
3524 | $cmdlist .= "COMMIT\n"; | |
3525 | ||
7b7b2654 AD |
3526 | if($iptablescmd eq "ip6tables") { |
3527 | ip6tables_restore_cmdlist($cmdlist); | |
3528 | } else { | |
3529 | iptables_restore_cmdlist($cmdlist); | |
3530 | } | |
3531 | } | |
3532 | ||
3533 | sub remove_pvefw_chains_ipset { | |
55fad3b7 DM |
3534 | |
3535 | my $ipset_chains = ipset_get_chains(); | |
3536 | ||
7b7b2654 | 3537 | my $cmdlist = ""; |
55fad3b7 DM |
3538 | |
3539 | foreach my $chain (keys %$ipset_chains) { | |
88c26d5e DM |
3540 | $cmdlist .= "flush $chain\n"; |
3541 | $cmdlist .= "destroy $chain\n"; | |
55fad3b7 DM |
3542 | } |
3543 | ||
7b7b2654 | 3544 | ipset_restore_cmdlist($cmdlist) if $cmdlist; |
c4a2e5ae DM |
3545 | } |
3546 | ||
8b453a09 DM |
3547 | sub init { |
3548 | my $cluster_conf = load_clusterfw_conf(); | |
3549 | my $cluster_options = $cluster_conf->{options}; | |
3550 | my $enable = $cluster_options->{enable}; | |
3551 | ||
3552 | return if !$enable; | |
3553 | ||
3554 | # load required modules here | |
3555 | } | |
3556 | ||
6b9f68a2 | 3557 | sub update { |
6b9f68a2 | 3558 | my $code = sub { |
3dfa8a7f DM |
3559 | |
3560 | my $cluster_conf = load_clusterfw_conf(); | |
3561 | my $cluster_options = $cluster_conf->{options}; | |
3562 | ||
55fad3b7 | 3563 | if (!$cluster_options->{enable}) { |
b22130d3 | 3564 | PVE::Firewall::remove_pvefw_chains(); |
3dfa8a7f DM |
3565 | return; |
3566 | } | |
3567 | ||
50f9a28d | 3568 | my $hostfw_conf = load_hostfw_conf($cluster_conf); |
3dfa8a7f | 3569 | |
638c755a | 3570 | my ($ruleset, $ipset_ruleset, $rulesetv6) = compile($cluster_conf, $hostfw_conf); |
490cdead | 3571 | |
17da5c0f | 3572 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $rulesetv6); |
6b9f68a2 DM |
3573 | }; |
3574 | ||
3575 | run_locked($code); | |
3576 | } | |
3577 | ||
b6360c3f | 3578 | 1; |