Commit | Line | Data |
---|---|---|
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; |
c8301d63 | 8 | use PVE::INotify; |
54cd19a8 | 9 | use PVE::JSONSchema qw(get_standard_option); |
c8301d63 | 10 | use PVE::Cluster; |
5f0a912c | 11 | use PVE::ProcFSTools; |
f789653a | 12 | use PVE::Tools; |
6b9f68a2 | 13 | use File::Basename; |
5e1267a5 DM |
14 | use File::Path; |
15 | use IO::File; | |
ecbea048 | 16 | use Net::IP; |
06320eb0 | 17 | use PVE::Tools qw(run_command lock_file); |
30c1ae52 | 18 | use Encode; |
ecbea048 | 19 | |
63c91681 | 20 | my $hostfw_conf_filename = "/etc/pve/local/host.fw"; |
fca39c2c DM |
21 | my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw"; |
22 | ||
cbb5d6f3 | 23 | # dynamically include PVE::QemuServer and PVE::OpenVZ |
d9fee004 DM |
24 | # to avoid dependency problems |
25 | my $have_qemu_server; | |
26 | eval { | |
27 | require PVE::QemuServer; | |
28 | $have_qemu_server = 1; | |
29 | }; | |
30 | ||
31 | my $have_pve_manager; | |
32 | eval { | |
33 | require PVE::OpenVZ; | |
34 | $have_pve_manager = 1; | |
35 | }; | |
36 | ||
cbb5d6f3 DM |
37 | my $feature_ipset_nomatch = 0; |
38 | eval { | |
39 | my (undef, undef, $release) = POSIX::uname(); | |
40 | if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) { | |
41 | my ($major, $minor) = ($1, $2); | |
42 | $feature_ipset_nomatch = 1 if ($major > 3) || | |
43 | ($major == 3 && $minor >= 7); | |
44 | } | |
45 | ||
46 | }; | |
47 | ||
5e1267a5 | 48 | use Data::Dumper; |
b6360c3f | 49 | |
c8301d63 DM |
50 | my $nodename = PVE::INotify::nodename(); |
51 | ||
06320eb0 | 52 | my $pve_fw_lock_filename = "/var/lock/pvefw.lck"; |
6b9f68a2 | 53 | my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status"; |
06320eb0 | 54 | |
2d404ffc DM |
55 | my $default_log_level = 'info'; |
56 | ||
57 | my $log_level_hash = { | |
58 | debug => 7, | |
59 | info => 6, | |
60 | notice => 5, | |
61 | warning => 4, | |
62 | err => 3, | |
63 | crit => 2, | |
64 | alert => 1, | |
65 | emerg => 0, | |
66 | }; | |
67 | ||
857f62c8 | 68 | # imported/converted from: /usr/share/shorewall/macro.* |
961b4928 | 69 | my $pve_fw_macros = { |
857f62c8 DM |
70 | 'Amanda' => [ |
71 | { action => 'PARAM', proto => 'udp', dport => '10080' }, | |
72 | { action => 'PARAM', proto => 'tcp', dport => '10080' }, | |
73 | ], | |
74 | 'Auth' => [ | |
75 | { action => 'PARAM', proto => 'tcp', dport => '113' }, | |
76 | ], | |
77 | 'BGP' => [ | |
78 | { action => 'PARAM', proto => 'tcp', dport => '179' }, | |
79 | ], | |
80 | 'BitTorrent' => [ | |
961b4928 | 81 | { action => 'PARAM', proto => 'tcp', dport => '6881:6889' }, |
857f62c8 DM |
82 | { action => 'PARAM', proto => 'udp', dport => '6881' }, |
83 | ], | |
84 | 'BitTorrent32' => [ | |
85 | { action => 'PARAM', proto => 'tcp', dport => '6881:6999' }, | |
86 | { action => 'PARAM', proto => 'udp', dport => '6881' }, | |
87 | ], | |
88 | 'CVS' => [ | |
89 | { action => 'PARAM', proto => 'tcp', dport => '2401' }, | |
90 | ], | |
91 | 'Citrix' => [ | |
92 | { action => 'PARAM', proto => 'tcp', dport => '1494' }, | |
93 | { action => 'PARAM', proto => 'udp', dport => '1604' }, | |
94 | { action => 'PARAM', proto => 'tcp', dport => '2598' }, | |
95 | ], | |
96 | 'DAAP' => [ | |
97 | { action => 'PARAM', proto => 'tcp', dport => '3689' }, | |
98 | { action => 'PARAM', proto => 'udp', dport => '3689' }, | |
99 | ], | |
100 | 'DCC' => [ | |
101 | { action => 'PARAM', proto => 'tcp', dport => '6277' }, | |
102 | ], | |
103 | 'DHCPfwd' => [ | |
104 | { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' }, | |
105 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '67:68', sport => '67:68' }, | |
106 | ], | |
107 | 'DNS' => [ | |
108 | { action => 'PARAM', proto => 'udp', dport => '53' }, | |
109 | { action => 'PARAM', proto => 'tcp', dport => '53' }, | |
110 | ], | |
111 | 'Distcc' => [ | |
112 | { action => 'PARAM', proto => 'tcp', dport => '3632' }, | |
113 | ], | |
114 | 'Edonkey' => [ | |
115 | { action => 'PARAM', proto => 'tcp', dport => '4662' }, | |
116 | { action => 'PARAM', proto => 'udp', dport => '4665' }, | |
961b4928 | 117 | ], |
857f62c8 DM |
118 | 'FTP' => [ |
119 | { action => 'PARAM', proto => 'tcp', dport => '21' }, | |
120 | ], | |
121 | 'Finger' => [ | |
122 | { action => 'PARAM', proto => 'tcp', dport => '79' }, | |
123 | ], | |
124 | 'GNUnet' => [ | |
125 | { action => 'PARAM', proto => 'tcp', dport => '2086' }, | |
126 | { action => 'PARAM', proto => 'udp', dport => '2086' }, | |
127 | { action => 'PARAM', proto => 'tcp', dport => '1080' }, | |
128 | { action => 'PARAM', proto => 'udp', dport => '1080' }, | |
129 | ], | |
130 | 'GRE' => [ | |
131 | { action => 'PARAM', proto => '47' }, | |
132 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' }, | |
133 | ], | |
134 | 'Git' => [ | |
135 | { action => 'PARAM', proto => 'tcp', dport => '9418' }, | |
136 | ], | |
137 | 'Gnutella' => [ | |
138 | { action => 'PARAM', proto => 'tcp', dport => '6346' }, | |
139 | { action => 'PARAM', proto => 'udp', dport => '6346' }, | |
140 | ], | |
141 | 'HKP' => [ | |
142 | { action => 'PARAM', proto => 'tcp', dport => '11371' }, | |
143 | ], | |
144 | 'HTTP' => [ | |
961b4928 DM |
145 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
146 | ], | |
857f62c8 DM |
147 | 'HTTPS' => [ |
148 | { action => 'PARAM', proto => 'tcp', dport => '443' }, | |
149 | ], | |
150 | 'ICPV2' => [ | |
151 | { action => 'PARAM', proto => 'udp', dport => '3130' }, | |
152 | ], | |
153 | 'ICQ' => [ | |
154 | { action => 'PARAM', proto => 'tcp', dport => '5190' }, | |
155 | ], | |
156 | 'IMAP' => [ | |
157 | { action => 'PARAM', proto => 'tcp', dport => '143' }, | |
158 | ], | |
159 | 'IMAPS' => [ | |
160 | { action => 'PARAM', proto => 'tcp', dport => '993' }, | |
161 | ], | |
162 | 'IPIP' => [ | |
163 | { action => 'PARAM', proto => '94' }, | |
164 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '94' }, | |
165 | ], | |
166 | 'IPP' => [ | |
167 | { action => 'PARAM', proto => 'tcp', dport => '631' }, | |
168 | ], | |
169 | 'IPPbrd' => [ | |
170 | { action => 'PARAM', proto => 'udp', dport => '631' }, | |
171 | ], | |
172 | 'IPPserver' => [ | |
173 | { action => 'PARAM', source => 'SOURCE', dest => 'DEST', proto => 'tcp', dport => '631' }, | |
174 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '631' }, | |
175 | ], | |
176 | 'IPsec' => [ | |
177 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, | |
178 | { action => 'PARAM', proto => '50' }, | |
179 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' }, | |
180 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' }, | |
181 | ], | |
182 | 'IPsecah' => [ | |
183 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, | |
184 | { action => 'PARAM', proto => '51' }, | |
185 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' }, | |
186 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '51' }, | |
187 | ], | |
188 | 'IPsecnat' => [ | |
189 | { action => 'PARAM', proto => 'udp', dport => '500' }, | |
190 | { action => 'PARAM', proto => 'udp', dport => '4500' }, | |
191 | { action => 'PARAM', proto => '50' }, | |
192 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500' }, | |
193 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '4500' }, | |
194 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' }, | |
195 | ], | |
196 | 'IRC' => [ | |
197 | { action => 'PARAM', proto => 'tcp', dport => '6667' }, | |
198 | ], | |
199 | 'JabberPlain' => [ | |
200 | { action => 'PARAM', proto => 'tcp', dport => '5222' }, | |
201 | ], | |
202 | 'JabberSecure' => [ | |
203 | { action => 'PARAM', proto => 'tcp', dport => '5223' }, | |
204 | ], | |
205 | 'Jabberd' => [ | |
206 | { action => 'PARAM', proto => 'tcp', dport => '5269' }, | |
207 | ], | |
208 | 'Jetdirect' => [ | |
209 | { action => 'PARAM', proto => 'tcp', dport => '9100' }, | |
210 | ], | |
211 | 'L2TP' => [ | |
212 | { action => 'PARAM', proto => 'udp', dport => '1701' }, | |
213 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1701' }, | |
214 | ], | |
215 | 'LDAP' => [ | |
216 | { action => 'PARAM', proto => 'tcp', dport => '389' }, | |
217 | ], | |
218 | 'LDAPS' => [ | |
219 | { action => 'PARAM', proto => 'tcp', dport => '636' }, | |
220 | ], | |
221 | 'MSNP' => [ | |
222 | { action => 'PARAM', proto => 'tcp', dport => '1863' }, | |
223 | ], | |
224 | 'MSSQL' => [ | |
225 | { action => 'PARAM', proto => 'tcp', dport => '1433' }, | |
226 | ], | |
227 | 'Mail' => [ | |
228 | { action => 'PARAM', proto => 'tcp', dport => '25' }, | |
229 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
230 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
231 | ], | |
232 | 'Munin' => [ | |
233 | { action => 'PARAM', proto => 'tcp', dport => '4949' }, | |
234 | ], | |
235 | 'MySQL' => [ | |
236 | { action => 'PARAM', proto => 'tcp', dport => '3306' }, | |
237 | ], | |
238 | 'NNTP' => [ | |
239 | { action => 'PARAM', proto => 'tcp', dport => '119' }, | |
240 | ], | |
241 | 'NNTPS' => [ | |
242 | { action => 'PARAM', proto => 'tcp', dport => '563' }, | |
243 | ], | |
244 | 'NTP' => [ | |
245 | { action => 'PARAM', proto => 'udp', dport => '123' }, | |
246 | ], | |
247 | 'NTPbi' => [ | |
248 | { action => 'PARAM', proto => 'udp', dport => '123' }, | |
249 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '123' }, | |
250 | ], | |
251 | 'NTPbrd' => [ | |
252 | { action => 'PARAM', proto => 'udp', dport => '123' }, | |
253 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '123' }, | |
254 | ], | |
255 | 'OSPF' => [ | |
256 | { action => 'PARAM', proto => '89' }, | |
257 | ], | |
258 | 'OpenVPN' => [ | |
259 | { action => 'PARAM', proto => 'udp', dport => '1194' }, | |
260 | ], | |
261 | 'PCA' => [ | |
262 | { action => 'PARAM', proto => 'udp', dport => '5632' }, | |
263 | { action => 'PARAM', proto => 'tcp', dport => '5631' }, | |
264 | ], | |
265 | 'POP3' => [ | |
266 | { action => 'PARAM', proto => 'tcp', dport => '110' }, | |
267 | ], | |
268 | 'POP3S' => [ | |
269 | { action => 'PARAM', proto => 'tcp', dport => '995' }, | |
270 | ], | |
271 | 'PPtP' => [ | |
272 | { action => 'PARAM', proto => '47' }, | |
273 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' }, | |
274 | { action => 'PARAM', proto => 'tcp', dport => '1723' }, | |
275 | ], | |
276 | 'Ping' => [ | |
269d4f13 | 277 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
278 | ], |
279 | 'PostgreSQL' => [ | |
280 | { action => 'PARAM', proto => 'tcp', dport => '5432' }, | |
281 | ], | |
282 | 'Printer' => [ | |
283 | { action => 'PARAM', proto => 'tcp', dport => '515' }, | |
284 | ], | |
285 | 'RDP' => [ | |
286 | { action => 'PARAM', proto => 'tcp', dport => '3389' }, | |
287 | ], | |
288 | 'RIPbi' => [ | |
289 | { action => 'PARAM', proto => 'udp', dport => '520' }, | |
290 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '520' }, | |
291 | ], | |
292 | 'RNDC' => [ | |
293 | { action => 'PARAM', proto => 'tcp', dport => '953' }, | |
294 | ], | |
295 | 'Razor' => [ | |
296 | { action => 'ACCEPT', proto => 'tcp', dport => '2703' }, | |
297 | ], | |
298 | 'Rdate' => [ | |
299 | { action => 'PARAM', proto => 'tcp', dport => '37' }, | |
300 | ], | |
301 | 'Rsync' => [ | |
302 | { action => 'PARAM', proto => 'tcp', dport => '873' }, | |
303 | ], | |
304 | 'SANE' => [ | |
305 | { action => 'PARAM', proto => 'tcp', dport => '6566' }, | |
306 | ], | |
307 | 'SMB' => [ | |
308 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, | |
309 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
310 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
311 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
312 | ], | |
313 | 'SMBBI' => [ | |
314 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, | |
315 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
316 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
317 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
318 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '135,445' }, | |
319 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '137:139' }, | |
320 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
321 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'tcp', dport => '135,139,445' }, | |
322 | ], | |
323 | 'SMBswat' => [ | |
324 | { action => 'PARAM', proto => 'tcp', dport => '901' }, | |
325 | ], | |
326 | 'SMTP' => [ | |
327 | { action => 'PARAM', proto => 'tcp', dport => '25' }, | |
328 | ], | |
329 | 'SMTPS' => [ | |
330 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
331 | ], | |
332 | 'SNMP' => [ | |
333 | { action => 'PARAM', proto => 'udp', dport => '161:162' }, | |
334 | { action => 'PARAM', proto => 'tcp', dport => '161' }, | |
335 | ], | |
336 | 'SPAMD' => [ | |
337 | { action => 'PARAM', proto => 'tcp', dport => '783' }, | |
338 | ], | |
339 | 'SSH' => [ | |
340 | { action => 'PARAM', proto => 'tcp', dport => '22' }, | |
341 | ], | |
342 | 'SVN' => [ | |
343 | { action => 'PARAM', proto => 'tcp', dport => '3690' }, | |
344 | ], | |
345 | 'SixXS' => [ | |
346 | { action => 'PARAM', proto => 'tcp', dport => '3874' }, | |
347 | { action => 'PARAM', proto => 'udp', dport => '3740' }, | |
348 | { action => 'PARAM', proto => '41' }, | |
349 | { action => 'PARAM', proto => 'udp', dport => '5072,8374' }, | |
350 | ], | |
351 | 'Squid' => [ | |
352 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, | |
353 | ], | |
354 | 'Submission' => [ | |
355 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
356 | ], | |
357 | 'Syslog' => [ | |
358 | { action => 'PARAM', proto => 'udp', dport => '514' }, | |
359 | { action => 'PARAM', proto => 'tcp', dport => '514' }, | |
360 | ], | |
361 | 'TFTP' => [ | |
362 | { action => 'PARAM', proto => 'udp', dport => '69' }, | |
363 | ], | |
364 | 'Telnet' => [ | |
365 | { action => 'PARAM', proto => 'tcp', dport => '23' }, | |
366 | ], | |
367 | 'Telnets' => [ | |
368 | { action => 'PARAM', proto => 'tcp', dport => '992' }, | |
369 | ], | |
370 | 'Time' => [ | |
371 | { action => 'PARAM', proto => 'tcp', dport => '37' }, | |
372 | ], | |
373 | 'Trcrt' => [ | |
374 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, | |
269d4f13 | 375 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
376 | ], |
377 | 'VNC' => [ | |
378 | { action => 'PARAM', proto => 'tcp', dport => '5900:5909' }, | |
379 | ], | |
380 | 'VNCL' => [ | |
381 | { action => 'PARAM', proto => 'tcp', dport => '5500' }, | |
382 | ], | |
383 | 'Web' => [ | |
384 | { action => 'PARAM', proto => 'tcp', dport => '80' }, | |
961b4928 DM |
385 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
386 | ], | |
857f62c8 DM |
387 | 'Webcache' => [ |
388 | { action => 'PARAM', proto => 'tcp', dport => '8080' }, | |
389 | ], | |
390 | 'Webmin' => [ | |
391 | { action => 'PARAM', proto => 'tcp', dport => '10000' }, | |
392 | ], | |
393 | 'Whois' => [ | |
394 | { action => 'PARAM', proto => 'tcp', dport => '43' }, | |
395 | ], | |
961b4928 DM |
396 | }; |
397 | ||
398 | my $pve_fw_parsed_macros; | |
399 | my $pve_fw_preferred_macro_names = {}; | |
3a616aa0 | 400 | |
d8f2505e DM |
401 | my $pve_std_chains = { |
402 | 'PVEFW-SET-ACCEPT-MARK' => [ | |
403 | "-j MARK --set-mark 1", | |
404 | ], | |
79929d9c DM |
405 | 'PVEFW-DropBroadcast' => [ |
406 | # same as shorewall 'Broadcast' | |
407 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
408 | # we can use this to reduce logging | |
409 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
410 | { action => 'DROP', dsttype => 'MULTICAST' }, | |
411 | { action => 'DROP', dsttype => 'ANYCAST' }, | |
cbb5d6f3 | 412 | { action => 'DROP', dest => '224.0.0.0/4' }, |
79929d9c DM |
413 | ], |
414 | 'PVEFW-reject' => [ | |
415 | # same as shorewall 'reject' | |
416 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
cbb5d6f3 | 417 | { action => 'DROP', source => '224.0.0.0/4' }, |
79929d9c DM |
418 | { action => 'DROP', proto => 'icmp' }, |
419 | "-p tcp -j REJECT --reject-with tcp-reset", | |
420 | "-p udp -j REJECT --reject-with icmp-port-unreachable", | |
421 | "-p icmp -j REJECT --reject-with icmp-host-unreachable", | |
422 | "-j REJECT --reject-with icmp-host-prohibited", | |
423 | ], | |
424 | 'PVEFW-Drop' => [ | |
cbb5d6f3 | 425 | # same as shorewall 'Drop', which is equal to DROP, |
79929d9c DM |
426 | # but REJECT/DROP some packages to reduce logging, |
427 | # and ACCEPT critical ICMP types | |
428 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
429 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
430 | { action => 'PVEFW-DropBroadcast' }, | |
431 | # ACCEPT critical ICMP types | |
432 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
433 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
434 | # Drop packets with INVALID state | |
435 | "-m conntrack --ctstate INVALID -j DROP", | |
436 | # Drop Microsoft SMB noise | |
437 | { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
438 | { action => 'DROP', proto => 'udp', dport => '137:139'}, | |
439 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
440 | { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
441 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
442 | # Drop new/NotSyn traffic so that it doesn't get logged | |
443 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
444 | # Drop DNS replies | |
445 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
446 | ], | |
447 | 'PVEFW-Reject' => [ | |
cbb5d6f3 | 448 | # same as shorewall 'Reject', which is equal to Reject, |
79929d9c DM |
449 | # but REJECT/DROP some packages to reduce logging, |
450 | # and ACCEPT critical ICMP types | |
451 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
452 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
453 | { action => 'PVEFW-DropBroadcast' }, | |
454 | # ACCEPT critical ICMP types | |
455 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
456 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
457 | # Drop packets with INVALID state | |
458 | "-m conntrack --ctstate INVALID -j DROP", | |
459 | # Drop Microsoft SMB noise | |
460 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
461 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, | |
462 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
463 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
464 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
465 | # Drop new/NotSyn traffic so that it doesn't get logged | |
466 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
467 | # Drop DNS replies | |
468 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
469 | ], | |
d86659ef DM |
470 | 'PVEFW-tcpflags' => [ |
471 | # same as shorewall tcpflags action. | |
472 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
473 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags", | |
474 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags", | |
475 | "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags", | |
476 | "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags", | |
477 | "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags", | |
478 | ], | |
bee633ab DM |
479 | 'PVEFW-smurfs' => [ |
480 | # same as shorewall smurfs action | |
481 | # Filter packets for smurfs (packets with a broadcast address as the source). | |
482 | "-s 0.0.0.0/32 -j RETURN", | |
483 | "-m addrtype --src-type BROADCAST -g PVEFW-smurflog", | |
484 | "-s 224.0.0.0/4 -g PVEFW-smurflog", | |
485 | ], | |
d8f2505e DM |
486 | }; |
487 | ||
4b586518 DM |
488 | # iptables -p icmp -h |
489 | my $icmp_type_names = { | |
490 | any => 1, | |
491 | 'echo-reply' => 1, | |
492 | 'destination-unreachable' => 1, | |
493 | 'network-unreachable' => 1, | |
494 | 'host-unreachable' => 1, | |
495 | 'protocol-unreachable' => 1, | |
496 | 'port-unreachable' => 1, | |
497 | 'fragmentation-needed' => 1, | |
498 | 'source-route-failed' => 1, | |
499 | 'network-unknown' => 1, | |
500 | 'host-unknown' => 1, | |
501 | 'network-prohibited' => 1, | |
502 | 'host-prohibited' => 1, | |
503 | 'TOS-network-unreachable' => 1, | |
504 | 'TOS-host-unreachable' => 1, | |
505 | 'communication-prohibited' => 1, | |
506 | 'host-precedence-violation' => 1, | |
507 | 'precedence-cutoff' => 1, | |
508 | 'source-quench' => 1, | |
509 | 'redirect' => 1, | |
510 | 'network-redirect' => 1, | |
511 | 'host-redirect' => 1, | |
512 | 'TOS-network-redirect' => 1, | |
513 | 'TOS-host-redirect' => 1, | |
514 | 'echo-request' => 1, | |
515 | 'router-advertisement' => 1, | |
516 | 'router-solicitation' => 1, | |
517 | 'time-exceeded' => 1, | |
518 | 'ttl-zero-during-transit' => 1, | |
519 | 'ttl-zero-during-reassembly' => 1, | |
520 | 'parameter-problem' => 1, | |
521 | 'ip-header-bad' => 1, | |
522 | 'required-option-missing' => 1, | |
523 | 'timestamp-request' => 1, | |
524 | 'timestamp-reply' => 1, | |
525 | 'address-mask-request' => 1, | |
526 | 'address-mask-reply' => 1, | |
527 | }; | |
528 | ||
54cd19a8 | 529 | sub init_firewall_macros { |
6158271d | 530 | |
961b4928 | 531 | $pve_fw_parsed_macros = {}; |
9aab3127 | 532 | |
961b4928 | 533 | foreach my $k (keys %$pve_fw_macros) { |
e5076eee DM |
534 | my $lc_name = lc($k); |
535 | my $macro = $pve_fw_macros->{$k}; | |
536 | $pve_fw_preferred_macro_names->{$lc_name} = $k; | |
537 | $pve_fw_parsed_macros->{$k} = $macro; | |
961b4928 | 538 | } |
9aab3127 DM |
539 | } |
540 | ||
54cd19a8 DM |
541 | init_firewall_macros(); |
542 | ||
fcba0beb DM |
543 | my $etc_services; |
544 | ||
545 | sub get_etc_services { | |
546 | ||
547 | return $etc_services if $etc_services; | |
548 | ||
549 | my $filename = "/etc/services"; | |
550 | ||
551 | my $fh = IO::File->new($filename, O_RDONLY); | |
552 | if (!$fh) { | |
553 | warn "unable to read '$filename' - $!\n"; | |
554 | return {}; | |
555 | } | |
556 | ||
557 | my $services = {}; | |
558 | ||
559 | while (my $line = <$fh>) { | |
560 | chomp ($line); | |
561 | next if $line =~m/^#/; | |
562 | next if ($line =~m/^\s*$/); | |
563 | ||
564 | if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) { | |
565 | $services->{byid}->{$2}->{name} = $1; | |
35b66e9d | 566 | $services->{byid}->{$2}->{port} = $2; |
fcba0beb DM |
567 | $services->{byid}->{$2}->{$3} = 1; |
568 | $services->{byname}->{$1} = $services->{byid}->{$2}; | |
569 | } | |
570 | } | |
571 | ||
572 | close($fh); | |
573 | ||
6158271d DM |
574 | $etc_services = $services; |
575 | ||
3a616aa0 | 576 | |
fcba0beb DM |
577 | return $etc_services; |
578 | } | |
579 | ||
580 | my $etc_protocols; | |
581 | ||
582 | sub get_etc_protocols { | |
583 | return $etc_protocols if $etc_protocols; | |
584 | ||
585 | my $filename = "/etc/protocols"; | |
586 | ||
587 | my $fh = IO::File->new($filename, O_RDONLY); | |
588 | if (!$fh) { | |
589 | warn "unable to read '$filename' - $!\n"; | |
590 | return {}; | |
591 | } | |
592 | ||
593 | my $protocols = {}; | |
594 | ||
595 | while (my $line = <$fh>) { | |
596 | chomp ($line); | |
597 | next if $line =~m/^#/; | |
598 | next if ($line =~m/^\s*$/); | |
599 | ||
600 | if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) { | |
601 | $protocols->{byid}->{$2}->{name} = $1; | |
602 | $protocols->{byname}->{$1} = $protocols->{byid}->{$2}; | |
603 | } | |
604 | } | |
605 | ||
606 | close($fh); | |
607 | ||
608 | $etc_protocols = $protocols; | |
609 | ||
610 | return $etc_protocols; | |
611 | } | |
612 | ||
ecbea048 DM |
613 | sub parse_address_list { |
614 | my ($str) = @_; | |
615 | ||
d72beb8e DM |
616 | return if $str !~ m/^(\+)(\S+)$/; # ipset ref |
617 | ||
3162af6b DM |
618 | my $count = 0; |
619 | my $iprange = 0; | |
620 | foreach my $elem (split(/,/, $str)) { | |
621 | $count++; | |
622 | if (!Net::IP->new($elem)) { | |
ecbea048 DM |
623 | my $err = Net::IP::Error(); |
624 | die "invalid IP address: $err\n"; | |
625 | } | |
3162af6b | 626 | $iprange = 1 if $elem =~ m/-/; |
ecbea048 | 627 | } |
3162af6b DM |
628 | |
629 | die "you can use a range in a list\n" if $iprange && $count > 1; | |
ecbea048 | 630 | } |
dddd9413 | 631 | |
fcba0beb DM |
632 | sub parse_port_name_number_or_range { |
633 | my ($str) = @_; | |
634 | ||
635 | my $services = PVE::Firewall::get_etc_services(); | |
4cdbb3b7 | 636 | my $nbports = 0; |
fcba0beb | 637 | foreach my $item (split(/,/, $str)) { |
4cdbb3b7 | 638 | my $portlist = ""; |
35b66e9d | 639 | my $oldpon = undef; |
4b586518 | 640 | $nbports++; |
fcba0beb | 641 | foreach my $pon (split(':', $item, 2)) { |
35b66e9d | 642 | $pon = $services->{byname}->{$pon}->{port} if $services->{byname}->{$pon}->{port}; |
4cdbb3b7 | 643 | if ($pon =~ m/^\d+$/){ |
857f62c8 | 644 | die "invalid port '$pon'\n" if $pon < 0 && $pon > 65535; |
35b66e9d AD |
645 | die "port '$pon' must be bigger than port '$oldpon' \n" if $oldpon && ($pon < $oldpon); |
646 | $oldpon = $pon; | |
4cdbb3b7 AD |
647 | }else{ |
648 | die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname}->{$pon}; | |
649 | } | |
fcba0beb DM |
650 | } |
651 | } | |
652 | ||
4cdbb3b7 | 653 | return ($nbports); |
fcba0beb DM |
654 | } |
655 | ||
54cd19a8 DM |
656 | PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec); |
657 | sub pve_fw_verify_port_spec { | |
658 | my ($portstr) = @_; | |
659 | ||
660 | parse_port_name_number_or_range($portstr); | |
661 | ||
662 | return $portstr; | |
663 | } | |
664 | ||
665 | PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec); | |
666 | sub pve_fw_verify_v4addr_spec { | |
667 | my ($list) = @_; | |
668 | ||
669 | parse_address_list($list); | |
670 | ||
671 | return $list; | |
672 | } | |
673 | ||
674 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
675 | sub pve_fw_verify_protocol_spec { | |
676 | my ($proto) = @_; | |
677 | ||
678 | my $protocols = get_etc_protocols(); | |
679 | ||
680 | die "unknown protocol '$proto'\n" if $proto && | |
681 | !(defined($protocols->{byname}->{$proto}) || | |
682 | defined($protocols->{byid}->{$proto})); | |
683 | ||
684 | return $proto; | |
685 | } | |
686 | ||
687 | ||
d1c53b3e | 688 | # helper function for API |
d1c53b3e | 689 | |
9c7e0858 DM |
690 | my $rule_properties = { |
691 | pos => { | |
692 | description => "Update rule at position <pos>.", | |
693 | type => 'integer', | |
694 | minimum => 0, | |
695 | optional => 1, | |
696 | }, | |
697 | digest => { | |
698 | type => 'string', | |
699 | optional => 1, | |
54cd19a8 DM |
700 | maxLength => 27, |
701 | minLength => 27, | |
9c7e0858 DM |
702 | }, |
703 | type => { | |
704 | type => 'string', | |
705 | optional => 1, | |
706 | enum => ['in', 'out', 'group'], | |
707 | }, | |
708 | action => { | |
709 | type => 'string', | |
710 | optional => 1, | |
54cd19a8 | 711 | enum => ['ACCEPT', 'DROP', 'REJECT'], |
9c7e0858 | 712 | }, |
e5076eee DM |
713 | macro => { |
714 | type => 'string', | |
715 | optional => 1, | |
54cd19a8 | 716 | maxLength => 128, |
e5076eee | 717 | }, |
54cd19a8 | 718 | iface => get_standard_option('pve-iface', { optional => 1 }), |
9c7e0858 | 719 | source => { |
54cd19a8 | 720 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
721 | optional => 1, |
722 | }, | |
723 | dest => { | |
54cd19a8 | 724 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
725 | optional => 1, |
726 | }, | |
727 | proto => { | |
54cd19a8 | 728 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
729 | optional => 1, |
730 | }, | |
731 | enable => { | |
732 | type => 'boolean', | |
733 | optional => 1, | |
734 | }, | |
735 | sport => { | |
54cd19a8 | 736 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
737 | optional => 1, |
738 | }, | |
739 | dport => { | |
54cd19a8 | 740 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
741 | optional => 1, |
742 | }, | |
743 | comment => { | |
744 | type => 'string', | |
745 | optional => 1, | |
746 | }, | |
747 | }; | |
748 | ||
ce36326d DM |
749 | sub cleanup_fw_rule { |
750 | my ($rule, $digest, $pos) = @_; | |
751 | ||
752 | my $r = {}; | |
753 | ||
754 | foreach my $k (keys %$rule) { | |
755 | next if !$rule_properties->{$k}; | |
756 | my $v = $rule->{$k}; | |
757 | next if !defined($v); | |
758 | $r->{$k} = $v; | |
759 | $r->{digest} = $digest; | |
760 | $r->{pos} = $pos; | |
761 | } | |
762 | ||
763 | return $r; | |
764 | } | |
765 | ||
9c7e0858 DM |
766 | sub add_rule_properties { |
767 | my ($properties) = @_; | |
768 | ||
769 | foreach my $k (keys %$rule_properties) { | |
770 | $properties->{$k} = $rule_properties->{$k}; | |
771 | } | |
cbb5d6f3 | 772 | |
9c7e0858 DM |
773 | return $properties; |
774 | } | |
775 | ||
776 | sub copy_rule_data { | |
777 | my ($rule, $param) = @_; | |
778 | ||
779 | foreach my $k (keys %$rule_properties) { | |
780 | if (defined(my $v = $param->{$k})) { | |
781 | if ($v eq '' || $v eq '-') { | |
782 | delete $rule->{$k}; | |
783 | } else { | |
784 | $rule->{$k} = $v; | |
785 | } | |
786 | } else { | |
787 | delete $rule->{$k}; | |
788 | } | |
789 | } | |
790 | return $rule; | |
791 | } | |
792 | ||
793 | # core functions | |
780bcc0f DM |
794 | my $bridge_firewall_enabled = 0; |
795 | ||
796 | sub enable_bridge_firewall { | |
797 | ||
798 | return if $bridge_firewall_enabled; # only once | |
799 | ||
5f0a912c DM |
800 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
801 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 802 | |
6a8a75db DM |
803 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
804 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
805 | ||
780bcc0f DM |
806 | $bridge_firewall_enabled = 1; |
807 | } | |
808 | ||
8cebfa6f | 809 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 810 | |
b16e818e DM |
811 | sub iptables_restore_cmdlist { |
812 | my ($cmdlist) = @_; | |
3a616aa0 | 813 | |
3fa83edf | 814 | run_command("/sbin/iptables-restore -n", input => $cmdlist); |
3a616aa0 AD |
815 | } |
816 | ||
34cdedfa AD |
817 | sub ipset_restore_cmdlist { |
818 | my ($cmdlist) = @_; | |
819 | ||
dd7a13fd | 820 | run_command("/usr/sbin/ipset restore", input => $cmdlist); |
34cdedfa AD |
821 | } |
822 | ||
de2a57cd DM |
823 | sub iptables_get_chains { |
824 | ||
825 | my $res = {}; | |
826 | ||
827 | # check what chains we want to track | |
828 | my $is_pvefw_chain = sub { | |
829 | my $name = shift; | |
830 | ||
dec84fcd DM |
831 | return 1 if $name =~ m/^PVEFW-\S+$/; |
832 | ||
de2a57cd | 833 | return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/; |
954f24b1 DM |
834 | |
835 | return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable | |
836 | ||
9e15114a DM |
837 | return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/; |
838 | ||
da6fc60b | 839 | return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/; |
f50656c2 | 840 | return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/; |
de2a57cd DM |
841 | |
842 | return undef; | |
843 | }; | |
844 | ||
845 | my $table = ''; | |
846 | ||
c4a2e5ae DM |
847 | my $hooks = {}; |
848 | ||
de2a57cd DM |
849 | my $parser = sub { |
850 | my $line = shift; | |
851 | ||
852 | return if $line =~ m/^#/; | |
853 | return if $line =~ m/^\s*$/; | |
854 | ||
855 | if ($line =~ m/^\*(\S+)$/) { | |
856 | $table = $1; | |
857 | return; | |
858 | } | |
859 | ||
860 | return if $table ne 'filter'; | |
861 | ||
862 | if ($line =~ m/^:(\S+)\s/) { | |
863 | my $chain = $1; | |
864 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 865 | $res->{$chain} = "unknown"; |
09d5f68e | 866 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 867 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 868 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 869 | $res->{$chain} = $sig; |
c4a2e5ae DM |
870 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) { |
871 | $hooks->{$1} = 1; | |
de2a57cd DM |
872 | } else { |
873 | # simply ignore the rest | |
874 | return; | |
875 | } | |
876 | }; | |
877 | ||
878 | run_command("/sbin/iptables-save", outfunc => $parser); | |
879 | ||
c4a2e5ae | 880 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
881 | } |
882 | ||
9bf7d929 DM |
883 | sub iptables_chain_digest { |
884 | my ($rules) = @_; | |
885 | my $digest = Digest::SHA->new('sha1'); | |
886 | foreach my $rule (@$rules) { # order is important | |
887 | $digest->add($rule); | |
888 | } | |
889 | return $digest->b64digest; | |
890 | } | |
891 | ||
3f95d14a DM |
892 | sub ipset_chain_digest { |
893 | my ($rules) = @_; | |
4bd0a9c4 | 894 | |
3f95d14a DM |
895 | my $digest = Digest::SHA->new('sha1'); |
896 | foreach my $rule (sort @$rules) { # note: sorted | |
897 | $digest->add($rule); | |
898 | } | |
899 | return $digest->b64digest; | |
900 | } | |
901 | ||
34cdedfa AD |
902 | sub ipset_get_chains { |
903 | ||
904 | my $res = {}; | |
905 | my $chains = {}; | |
906 | ||
907 | my $parser = sub { | |
908 | my $line = shift; | |
909 | ||
910 | return if $line =~ m/^#/; | |
911 | return if $line =~ m/^\s*$/; | |
4b96e877 | 912 | if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) { |
81a0bf43 DM |
913 | my $chain = $1; |
914 | $line =~ s/\s+$//; # delete trailing white space | |
915 | push @{$chains->{$chain}}, $line; | |
34cdedfa AD |
916 | } else { |
917 | # simply ignore the rest | |
918 | return; | |
919 | } | |
920 | }; | |
921 | ||
3f95d14a | 922 | run_command("/usr/sbin/ipset save", outfunc => $parser); |
34cdedfa | 923 | |
3f95d14a DM |
924 | # compute digest for each chain |
925 | foreach my $chain (keys %$chains) { | |
926 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
927 | } |
928 | ||
929 | return $res; | |
930 | } | |
931 | ||
eba0fb64 | 932 | sub ruleset_generate_cmdstr { |
ba791b1f | 933 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_; |
3a616aa0 | 934 | |
00bb4391 | 935 | return if defined($rule->{enable}) && !$rule->{enable}; |
11bac5c2 | 936 | |
e5076eee DM |
937 | die "unable to emit macro - internal error" if $rule->{macro}; # should not happen |
938 | ||
939 | my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0; | |
940 | my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0; | |
e5076eee | 941 | |
41524a58 | 942 | my @cmd = (); |
3a616aa0 | 943 | |
eba0fb64 DM |
944 | push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in}; |
945 | push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
946 | ||
ba791b1f AD |
947 | my $source = $rule->{source}; |
948 | my $dest = $rule->{dest}; | |
949 | ||
cbb5d6f3 DM |
950 | if ($source) { |
951 | if ($source =~ m/^(\+)(\S+)$/) { | |
936af352 | 952 | die "no such ipset $2" if !$cluster_conf->{ipset}->{$2}; |
4b96e877 | 953 | push @cmd, "-m set --match-set PVEFW-$2 src"; |
ba791b1f | 954 | |
cbb5d6f3 | 955 | } elsif ($source =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){ |
ba791b1f AD |
956 | push @cmd, "-m iprange --src-range $source"; |
957 | ||
cbb5d6f3 | 958 | } else { |
ba791b1f AD |
959 | push @cmd, "-s $source"; |
960 | } | |
961 | } | |
962 | ||
cbb5d6f3 DM |
963 | if ($dest) { |
964 | if ($dest =~ m/^(\+)(\S+)$/) { | |
936af352 | 965 | die "no such ipset $2" if !$cluster_conf->{ipset}->{$2}; |
4b96e877 | 966 | push @cmd, "-m set --match-set PVEFW-$2 dst"; |
ba791b1f | 967 | |
cbb5d6f3 | 968 | } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){ |
ba791b1f AD |
969 | push @cmd, "-m iprange --dst-range $dest"; |
970 | ||
cbb5d6f3 | 971 | } else { |
ba791b1f AD |
972 | push @cmd, "-s $dest"; |
973 | } | |
974 | } | |
4b586518 | 975 | |
181390b0 | 976 | if ($rule->{proto}) { |
41524a58 | 977 | push @cmd, "-p $rule->{proto}"; |
e3a1d391 | 978 | |
181390b0 | 979 | my $multiport = 0; |
e5076eee DM |
980 | $multiport++ if $nbdport > 1; |
981 | $multiport++ if $nbsport > 1; | |
e3a1d391 | 982 | |
41524a58 | 983 | push @cmd, "--match multiport" if $multiport; |
4b586518 | 984 | |
cbb5d6f3 | 985 | die "multiport: option '--sports' cannot be used together with '--dports'\n" |
181390b0 DM |
986 | if ($multiport == 2) && ($rule->{dport} ne $rule->{sport}); |
987 | ||
988 | if ($rule->{dport}) { | |
989 | if ($rule->{proto} && $rule->{proto} eq 'icmp') { | |
990 | # Note: we use dport to store --icmp-type | |
991 | die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}}); | |
41524a58 | 992 | push @cmd, "-m icmp --icmp-type $rule->{dport}"; |
181390b0 | 993 | } else { |
e5076eee | 994 | if ($nbdport > 1) { |
181390b0 | 995 | if ($multiport == 2) { |
41524a58 | 996 | push @cmd, "--ports $rule->{dport}"; |
181390b0 | 997 | } else { |
41524a58 | 998 | push @cmd, "--dports $rule->{dport}"; |
181390b0 | 999 | } |
e3a1d391 | 1000 | } else { |
41524a58 | 1001 | push @cmd, "--dport $rule->{dport}"; |
e3a1d391 | 1002 | } |
4b586518 DM |
1003 | } |
1004 | } | |
4b586518 | 1005 | |
181390b0 | 1006 | if ($rule->{sport}) { |
e5076eee | 1007 | if ($nbsport > 1) { |
41524a58 | 1008 | push @cmd, "--sports $rule->{sport}" if $multiport != 2; |
181390b0 | 1009 | } else { |
41524a58 | 1010 | push @cmd, "--sport $rule->{sport}"; |
181390b0 | 1011 | } |
4b586518 | 1012 | } |
181390b0 DM |
1013 | } elsif ($rule->{dport} || $rule->{sport}) { |
1014 | warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport}; | |
1015 | warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport}; | |
4b586518 DM |
1016 | } |
1017 | ||
41524a58 | 1018 | push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; |
4e6112f9 DM |
1019 | |
1020 | if (my $action = $rule->{action}) { | |
cbb5d6f3 | 1021 | $action = $actions->{$action} if defined($actions->{$action}); |
4e6112f9 | 1022 | $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK'; |
41524a58 | 1023 | push @cmd, $goto ? "-g $action" : "-j $action"; |
181390b0 | 1024 | } |
3a616aa0 | 1025 | |
eba0fb64 DM |
1026 | return scalar(@cmd) ? join(' ', @cmd) : undef; |
1027 | } | |
1028 | ||
e5076eee DM |
1029 | my $apply_macro = sub { |
1030 | my ($macro_name, $param) = @_; | |
1031 | ||
1032 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
1033 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
1034 | ||
1035 | my $rules = []; | |
1036 | ||
1037 | foreach my $templ (@$macro_rules) { | |
1038 | my $rule = {}; | |
1039 | my $param_used = {}; | |
1040 | foreach my $k (keys %$templ) { | |
1041 | my $v = $templ->{$k}; | |
1042 | if ($v eq 'PARAM') { | |
1043 | $v = $param->{$k}; | |
1044 | $param_used->{$k} = 1; | |
1045 | } elsif ($v eq 'DEST') { | |
1046 | $v = $param->{dest}; | |
1047 | $param_used->{dest} = 1; | |
1048 | } elsif ($v eq 'SOURCE') { | |
1049 | $v = $param->{source}; | |
1050 | $param_used->{source} = 1; | |
1051 | } | |
1052 | ||
1053 | die "missing parameter '$k' in macro '$macro_name'\n" if !defined($v); | |
1054 | $rule->{$k} = $v; | |
1055 | } | |
1056 | foreach my $k (keys %$param) { | |
1057 | next if $k eq 'macro'; | |
1058 | next if !defined($param->{$k}); | |
1059 | next if $param_used->{$k}; | |
1060 | if (defined($rule->{$k})) { | |
1061 | die "parameter '$k' already define in macro (value = '$rule->{$k}')\n" | |
1062 | if $rule->{$k} ne $param->{$k}; | |
1063 | } else { | |
1064 | $rule->{$k} = $param->{$k}; | |
1065 | } | |
1066 | } | |
1067 | push @$rules, $rule; | |
1068 | } | |
1069 | ||
1070 | return $rules; | |
1071 | }; | |
1072 | ||
eba0fb64 | 1073 | sub ruleset_generate_rule { |
ba791b1f | 1074 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_; |
eba0fb64 | 1075 | |
e5076eee DM |
1076 | my $rules; |
1077 | ||
1078 | if ($rule->{macro}) { | |
1079 | $rules = &$apply_macro($rule->{macro}, $rule); | |
1080 | } else { | |
1081 | $rules = [ $rule ]; | |
1082 | } | |
1083 | ||
cbb5d6f3 | 1084 | foreach my $tmp (@$rules) { |
ba791b1f | 1085 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) { |
e5076eee DM |
1086 | ruleset_addrule($ruleset, $chain, $cmdstr); |
1087 | } | |
41524a58 | 1088 | } |
3fa83edf | 1089 | } |
0f168d7b | 1090 | |
eba0fb64 DM |
1091 | sub ruleset_generate_rule_insert { |
1092 | my ($ruleset, $chain, $rule, $actions, $goto) = @_; | |
1093 | ||
e5076eee DM |
1094 | die "implement me" if $rule->{macro}; # not implemented, because not needed so far |
1095 | ||
eba0fb64 DM |
1096 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) { |
1097 | ruleset_insertrule($ruleset, $chain, $cmdstr); | |
1098 | } | |
1099 | } | |
3fa83edf DM |
1100 | |
1101 | sub ruleset_create_chain { | |
1102 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1103 | |
d050c724 | 1104 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 1105 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 1106 | |
3fa83edf DM |
1107 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
1108 | ||
1109 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
1110 | } |
1111 | ||
3fa83edf DM |
1112 | sub ruleset_chain_exist { |
1113 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1114 | |
3fa83edf DM |
1115 | return $ruleset->{$chain} ? 1 : undef; |
1116 | } | |
3a616aa0 | 1117 | |
3fa83edf DM |
1118 | sub ruleset_addrule { |
1119 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1120 | |
3fa83edf | 1121 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1122 | |
3fa83edf DM |
1123 | push @{$ruleset->{$chain}}, "-A $chain $rule"; |
1124 | } | |
3a616aa0 | 1125 | |
3fa83edf DM |
1126 | sub ruleset_insertrule { |
1127 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1128 | |
3fa83edf | 1129 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1130 | |
3fa83edf DM |
1131 | unshift @{$ruleset->{$chain}}, "-A $chain $rule"; |
1132 | } | |
3a616aa0 | 1133 | |
782c4cde DM |
1134 | sub get_log_rule_base { |
1135 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
cbb5d6f3 | 1136 | |
782c4cde DM |
1137 | die "internal error - no log level" if !defined($loglevel); |
1138 | ||
1139 | $vmid = 0 if !defined($vmid); | |
1140 | ||
cbb5d6f3 | 1141 | # Note: we use special format for prefix to pass further |
782c4cde DM |
1142 | # info to log daemon (VMID, LOGVELEL and CHAIN) |
1143 | ||
1144 | return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; | |
1145 | } | |
1146 | ||
1147 | sub ruleset_addlog { | |
1148 | my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_; | |
1149 | ||
1150 | return if !defined($loglevel); | |
1151 | ||
1152 | my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel); | |
1153 | ||
1154 | $logrule = "$rule $logrule" if defined($rule); | |
1155 | ||
1156 | ruleset_addrule($ruleset, $chain, $logrule) | |
1157 | } | |
1158 | ||
3fa83edf | 1159 | sub generate_bridge_chains { |
530c005e DM |
1160 | my ($ruleset, $hostfw_conf, $bridge, $routing_table) = @_; |
1161 | ||
1162 | my $options = $hostfw_conf->{options} || {}; | |
1163 | ||
1164 | die "error: detected direct route to bridge '$bridge'\n" | |
1165 | if !$options->{allow_bridge_route} && $routing_table->{$bridge}; | |
2f3d8d76 | 1166 | |
5927497d DM |
1167 | if (!ruleset_chain_exist($ruleset, "$bridge-FW")) { |
1168 | ruleset_create_chain($ruleset, "$bridge-FW"); | |
3cc81077 DM |
1169 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-out -j $bridge-FW"); |
1170 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-in -j $bridge-FW"); | |
3fa83edf | 1171 | } |
3a616aa0 | 1172 | |
3fa83edf DM |
1173 | if (!ruleset_chain_exist($ruleset, "$bridge-OUT")) { |
1174 | ruleset_create_chain($ruleset, "$bridge-OUT"); | |
3cc81077 DM |
1175 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-in -j $bridge-OUT"); |
1176 | ruleset_insertrule($ruleset, "PVEFW-INPUT", "-i $bridge -m physdev --physdev-is-in -j $bridge-OUT"); | |
9fcad984 AD |
1177 | } |
1178 | ||
1179 | if (!ruleset_chain_exist($ruleset, "$bridge-IN")) { | |
1180 | ruleset_create_chain($ruleset, "$bridge-IN"); | |
3cc81077 | 1181 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j $bridge-IN"); |
fdb0bf20 | 1182 | ruleset_addrule($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT"); |
7323008d | 1183 | # accept traffic to unmanaged bridge ports |
3cc81077 | 1184 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j ACCEPT "); |
3fa83edf DM |
1185 | } |
1186 | } | |
3a616aa0 | 1187 | |
ead850e8 | 1188 | sub ruleset_add_chain_policy { |
782c4cde | 1189 | my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
1190 | |
1191 | if ($policy eq 'ACCEPT') { | |
1192 | ||
1193 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' }, | |
1194 | { ACCEPT => $accept_action}); | |
1195 | ||
1196 | } elsif ($policy eq 'DROP') { | |
1197 | ||
1198 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop"); | |
1199 | ||
782c4cde | 1200 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1201 | |
1202 | ruleset_addrule($ruleset, $chain, "-j DROP"); | |
1203 | } elsif ($policy eq 'REJECT') { | |
1204 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject"); | |
1205 | ||
782c4cde | 1206 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1207 | |
1208 | ruleset_addrule($ruleset, $chain, "-g PVEFW-reject"); | |
1209 | } else { | |
1210 | # should not happen | |
1211 | die "internal error: unknown policy '$policy'"; | |
1212 | } | |
1213 | } | |
1214 | ||
9e15114a DM |
1215 | sub ruleset_create_vm_chain { |
1216 | my ($ruleset, $chain, $options, $macaddr, $direction) = @_; | |
3a616aa0 | 1217 | |
9e15114a | 1218 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1219 | my $accept = generate_nfqueue($options); |
3a616aa0 | 1220 | |
bee633ab | 1221 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
9e15114a | 1222 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); |
bee633ab DM |
1223 | } |
1224 | ||
ce15d90b | 1225 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
76a2d1e7 | 1226 | if ($direction eq 'OUT') { |
cbb5d6f3 | 1227 | ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK', |
0f168d7b | 1228 | proto => 'udp', sport => 68, dport => 67 }); |
76a2d1e7 | 1229 | } else { |
cbb5d6f3 | 1230 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT', |
0f168d7b | 1231 | proto => 'udp', sport => 67, dport => 68 }); |
76a2d1e7 | 1232 | } |
ce15d90b DM |
1233 | } |
1234 | ||
bee633ab | 1235 | if ($options->{tcpflags}) { |
9e15114a | 1236 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); |
bee633ab DM |
1237 | } |
1238 | ||
9e15114a | 1239 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
cbb5d6f3 | 1240 | if ($direction eq 'OUT') { |
b47ecc88 | 1241 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -g PVEFW-SET-ACCEPT-MARK"); |
cbb5d6f3 | 1242 | } else { |
b47ecc88 AD |
1243 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
1244 | } | |
cbb5d6f3 | 1245 | |
b21aca2c DM |
1246 | if ($direction eq 'OUT') { |
1247 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
9e15114a | 1248 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP"); |
b21aca2c | 1249 | } |
9e15114a | 1250 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
c29f55c9 | 1251 | } |
9e15114a DM |
1252 | } |
1253 | ||
1254 | sub ruleset_generate_vm_rules { | |
fca39c2c | 1255 | my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_; |
9e15114a DM |
1256 | |
1257 | my $lc_direction = lc($direction); | |
c29f55c9 | 1258 | |
92e976b3 DM |
1259 | foreach my $rule (@$rules) { |
1260 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
ea9e5116 | 1261 | next if !$rule->{enable}; |
92e976b3 | 1262 | if ($rule->{type} eq 'group') { |
cbb5d6f3 | 1263 | my $group_chain = "GROUP-$rule->{action}-$direction"; |
92e976b3 | 1264 | if(!ruleset_chain_exist($ruleset, $group_chain)){ |
fca39c2c | 1265 | generate_group_rules($ruleset, $cluster_conf, $rule->{action}); |
92e976b3 | 1266 | } |
9e15114a | 1267 | ruleset_addrule($ruleset, $chain, "-j $group_chain"); |
b47ecc88 AD |
1268 | if ($direction eq 'OUT'){ |
1269 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN"); | |
1270 | }else{ | |
1271 | my $accept = generate_nfqueue($options); | |
1272 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept"); | |
1273 | } | |
1274 | ||
92e976b3 DM |
1275 | } else { |
1276 | next if $rule->{type} ne $lc_direction; | |
1277 | if ($direction eq 'OUT') { | |
cbb5d6f3 | 1278 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 1279 | { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
4e6112f9 | 1280 | } else { |
b47ecc88 | 1281 | my $accept = generate_nfqueue($options); |
ba791b1f | 1282 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
3a616aa0 | 1283 | } |
4e6112f9 | 1284 | } |
3a616aa0 | 1285 | } |
9e15114a DM |
1286 | } |
1287 | ||
b47ecc88 AD |
1288 | sub generate_nfqueue { |
1289 | my ($options) = @_; | |
1290 | ||
1291 | my $action = ""; | |
1292 | if($options->{ips}){ | |
1293 | $action = "NFQUEUE"; | |
1294 | if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
1295 | if(defined($3) && defined($1)) { | |
1296 | $action .= " --queue-balance $1:$3"; | |
1297 | }elsif (defined($1)) { | |
1298 | $action .= " --queue-num $1"; | |
1299 | } | |
1300 | } | |
1301 | $action .= " --queue-bypass"; | |
1302 | }else{ | |
1303 | $action = "ACCEPT"; | |
1304 | } | |
1305 | ||
1306 | return $action; | |
1307 | } | |
1308 | ||
da6fc60b AD |
1309 | sub ruleset_generate_vm_ipsrules { |
1310 | my ($ruleset, $options, $direction, $iface, $bridge) = @_; | |
1311 | ||
1312 | if ($options->{ips} && $direction eq 'IN') { | |
1313 | my $nfqueue = generate_nfqueue($options); | |
1314 | ||
1315 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1316 | ruleset_create_chain($ruleset, "PVEFW-IPS"); | |
1317 | } | |
1318 | ||
1319 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1320 | ruleset_create_chain($ruleset, "$bridge-IPS"); | |
1321 | ruleset_insertrule($ruleset, "PVEFW-IPS", "-o $bridge -m physdev --physdev-is-out -j $bridge-IPS"); | |
1322 | } | |
1323 | ||
1324 | ruleset_addrule($ruleset, "$bridge-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue"); | |
1325 | } | |
1326 | } | |
1327 | ||
9e15114a | 1328 | sub generate_venet_rules_direction { |
fca39c2c | 1329 | my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_; |
9e15114a | 1330 | |
5176619e | 1331 | parse_address_list($ip); # make sure we have a valid $ip list |
9e15114a DM |
1332 | |
1333 | my $lc_direction = lc($direction); | |
1334 | ||
1335 | my $rules = $vmfw_conf->{rules}; | |
1336 | ||
1337 | my $options = $vmfw_conf->{options}; | |
1338 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1339 | ||
1340 | my $chain = "venet0-$vmid-$direction"; | |
1341 | ||
1342 | ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction); | |
1343 | ||
fca39c2c | 1344 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction); |
9e15114a DM |
1345 | |
1346 | # implement policy | |
1347 | my $policy; | |
1348 | ||
1349 | if ($direction eq 'OUT') { | |
1350 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
1351 | } else { | |
1352 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default | |
1353 | } | |
1354 | ||
b47ecc88 AD |
1355 | my $accept = generate_nfqueue($options); |
1356 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1357 | ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action); |
9e15114a | 1358 | |
38485daa | 1359 | # plug into FORWARD, INPUT and OUTPUT chain |
eba0fb64 DM |
1360 | if ($direction eq 'OUT') { |
1361 | ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD", { | |
1362 | action => $chain, | |
1363 | source => $ip, | |
1364 | iface_in => 'venet0'}); | |
38485daa DM |
1365 | |
1366 | ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT", { | |
1367 | action => $chain, | |
1368 | source => $ip, | |
1369 | iface_in => 'venet0'}); | |
eba0fb64 DM |
1370 | } else { |
1371 | ruleset_generate_rule($ruleset, "PVEFW-FORWARD", { | |
1372 | action => $chain, | |
1373 | dest => $ip, | |
1374 | iface_out => 'venet0'}); | |
38485daa DM |
1375 | |
1376 | ruleset_generate_rule($ruleset, "PVEFW-OUTPUT", { | |
1377 | action => $chain, | |
1378 | dest => $ip, | |
1379 | iface_out => 'venet0'}); | |
eba0fb64 | 1380 | } |
9e15114a DM |
1381 | } |
1382 | ||
1383 | sub generate_tap_rules_direction { | |
fca39c2c | 1384 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_; |
9e15114a DM |
1385 | |
1386 | my $lc_direction = lc($direction); | |
1387 | ||
1388 | my $rules = $vmfw_conf->{rules}; | |
1389 | ||
1390 | my $options = $vmfw_conf->{options}; | |
1391 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1392 | ||
1393 | my $tapchain = "$iface-$direction"; | |
1394 | ||
1395 | ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction); | |
1396 | ||
fca39c2c | 1397 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options); |
3a616aa0 | 1398 | |
da6fc60b AD |
1399 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge); |
1400 | ||
ccae0b50 DM |
1401 | # implement policy |
1402 | my $policy; | |
1403 | ||
1404 | if ($direction eq 'OUT') { | |
72f63fde | 1405 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
ccae0b50 | 1406 | } else { |
72f63fde | 1407 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
ccae0b50 DM |
1408 | } |
1409 | ||
b47ecc88 AD |
1410 | my $accept = generate_nfqueue($options); |
1411 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1412 | ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action); |
3a616aa0 | 1413 | |
3fa83edf | 1414 | # plug the tap chain to bridge chain |
3cc81077 DM |
1415 | if ($direction eq 'IN') { |
1416 | ruleset_insertrule($ruleset, "$bridge-IN", | |
1417 | "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain"); | |
1418 | } else { | |
1419 | ruleset_insertrule($ruleset, "$bridge-OUT", | |
1420 | "-m physdev --physdev-in $iface -j $tapchain"); | |
1421 | } | |
3a616aa0 AD |
1422 | } |
1423 | ||
d18c1e2b | 1424 | sub enable_host_firewall { |
fca39c2c | 1425 | my ($ruleset, $hostfw_conf, $cluster_conf) = @_; |
0bd5f137 | 1426 | |
51bae274 | 1427 | # fixme: allow security groups |
0bd5f137 | 1428 | |
92e976b3 DM |
1429 | my $options = $hostfw_conf->{options}; |
1430 | my $rules = $hostfw_conf->{rules}; | |
178a63be | 1431 | |
3fa83edf | 1432 | # host inbound firewall |
dec84fcd DM |
1433 | my $chain = "PVEFW-HOST-IN"; |
1434 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 1435 | |
178a63be DM |
1436 | my $loglevel = get_option_log_level($options, "log_level_in"); |
1437 | ||
4ac863a6 DM |
1438 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
1439 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); | |
1440 | } | |
1441 | ||
fb424a00 DM |
1442 | if ($options->{tcpflags}) { |
1443 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); | |
1444 | } | |
1445 | ||
7fab95bc DM |
1446 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1447 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1448 | ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT"); |
1449 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1450 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1451 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1452 | |
23e888f8 DM |
1453 | # we use RETURN because we need to check also tap rules |
1454 | my $accept_action = 'RETURN'; | |
1455 | ||
92e976b3 DM |
1456 | foreach my $rule (@$rules) { |
1457 | next if $rule->{type} ne 'in'; | |
ba791b1f | 1458 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
0bd5f137 AD |
1459 | } |
1460 | ||
23e888f8 | 1461 | # implement input policy |
72f63fde | 1462 | my $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
782c4cde | 1463 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 1464 | |
3fa83edf | 1465 | # host outbound firewall |
aadd745e | 1466 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
1467 | ruleset_create_chain($ruleset, $chain); |
1468 | ||
178a63be DM |
1469 | $loglevel = get_option_log_level($options, "log_level_out"); |
1470 | ||
7fab95bc DM |
1471 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1472 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1473 | ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT"); |
1474 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1475 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1476 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1477 | |
23e888f8 DM |
1478 | # we use RETURN because we may want to check other thigs later |
1479 | $accept_action = 'RETURN'; | |
1480 | ||
92e976b3 DM |
1481 | foreach my $rule (@$rules) { |
1482 | next if $rule->{type} ne 'out'; | |
ba791b1f | 1483 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
0bd5f137 AD |
1484 | } |
1485 | ||
23e888f8 | 1486 | # implement output policy |
72f63fde | 1487 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
782c4cde | 1488 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
6158271d | 1489 | |
dec84fcd DM |
1490 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT"); |
1491 | ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
1492 | } |
1493 | ||
1494 | sub generate_group_rules { | |
fca39c2c | 1495 | my ($ruleset, $cluster_conf, $group) = @_; |
c6f5cc88 | 1496 | die "no such security group '$group'\n" if !$cluster_conf->{groups}->{$group}; |
9d31b418 | 1497 | |
c6f5cc88 | 1498 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 1499 | |
3fa83edf | 1500 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 1501 | |
3fa83edf | 1502 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1503 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1504 | |
92e976b3 DM |
1505 | foreach my $rule (@$rules) { |
1506 | next if $rule->{type} ne 'in'; | |
ba791b1f | 1507 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 AD |
1508 | } |
1509 | ||
3fa83edf | 1510 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 1511 | |
3fa83edf | 1512 | ruleset_create_chain($ruleset, $chain); |
4e6112f9 | 1513 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1514 | |
92e976b3 DM |
1515 | foreach my $rule (@$rules) { |
1516 | next if $rule->{type} ne 'out'; | |
1517 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to | |
1518 | # check also other tap rules later | |
cbb5d6f3 | 1519 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 1520 | { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 | 1521 | } |
9d31b418 AD |
1522 | } |
1523 | ||
51bae274 DM |
1524 | my $MAX_NETS = 32; |
1525 | my $valid_netdev_names = {}; | |
1526 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
1527 | $valid_netdev_names->{"net$i"} = 1; | |
1528 | } | |
5e1267a5 | 1529 | |
51bae274 DM |
1530 | sub parse_fw_rule { |
1531 | my ($line, $need_iface, $allow_groups) = @_; | |
5e1267a5 | 1532 | |
92e976b3 | 1533 | my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport); |
51bae274 | 1534 | |
11bac5c2 | 1535 | # we can add single line comments to the end of the rule |
30c1ae52 | 1536 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; |
11bac5c2 DM |
1537 | |
1538 | # we can disable a rule when prefixed with '|' | |
ea9e5116 DM |
1539 | my $enable = 1; |
1540 | ||
1541 | $enable = 0 if $line =~ s/^\|//; | |
51bae274 DM |
1542 | |
1543 | my @data = split(/\s+/, $line); | |
92e976b3 | 1544 | my $expected_elements = $need_iface ? 8 : 7; |
51bae274 DM |
1545 | |
1546 | die "wrong number of rule elements\n" if scalar(@data) > $expected_elements; | |
1547 | ||
1548 | if ($need_iface) { | |
92e976b3 | 1549 | ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data |
51bae274 | 1550 | } else { |
92e976b3 | 1551 | ($type, $action, $source, $dest, $proto, $dport, $sport) = @data; |
51bae274 DM |
1552 | } |
1553 | ||
92e976b3 | 1554 | die "incomplete rule\n" if ! ($type && $action); |
51bae274 | 1555 | |
961b4928 | 1556 | my $macro; |
961b4928 | 1557 | |
92e976b3 DM |
1558 | $type = lc($type); |
1559 | ||
1560 | if ($type eq 'in' || $type eq 'out') { | |
1561 | if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) { | |
1562 | # OK | |
1563 | } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
e5076eee DM |
1564 | $action = $2; |
1565 | my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)}; | |
1566 | die "unknown macro '$1'\n" if !$preferred_name; | |
1567 | $macro = $preferred_name; | |
92e976b3 DM |
1568 | } else { |
1569 | die "unknown action '$action'\n"; | |
1570 | } | |
1571 | } elsif ($type eq 'group') { | |
1572 | die "wrong number of rule elements\n" if scalar(@data) != 3; | |
1573 | die "groups disabled\n" if !$allow_groups; | |
1574 | ||
cbb5d6f3 | 1575 | die "invalid characters in group name\n" if $action !~ m/^[A-Za-z0-9_\-]+$/; |
51bae274 | 1576 | } else { |
92e976b3 | 1577 | die "unknown rule type '$type'\n"; |
51bae274 DM |
1578 | } |
1579 | ||
1580 | if ($need_iface) { | |
1581 | $iface = undef if $iface && $iface eq '-'; | |
51bae274 DM |
1582 | } |
1583 | ||
1584 | $proto = undef if $proto && $proto eq '-'; | |
54cd19a8 | 1585 | pve_fw_verify_protocol_spec($proto) if $proto; |
51bae274 DM |
1586 | |
1587 | $source = undef if $source && $source eq '-'; | |
1588 | $dest = undef if $dest && $dest eq '-'; | |
1589 | ||
1590 | $dport = undef if $dport && $dport eq '-'; | |
1591 | $sport = undef if $sport && $sport eq '-'; | |
1592 | ||
e5076eee DM |
1593 | parse_port_name_number_or_range($dport) if defined($dport); |
1594 | parse_port_name_number_or_range($sport) if defined($sport); | |
ba791b1f | 1595 | |
d72beb8e DM |
1596 | parse_address_list($source) if $source; |
1597 | parse_address_list($dest) if $dest; | |
51bae274 | 1598 | |
e5076eee | 1599 | return { |
92e976b3 | 1600 | type => $type, |
ea9e5116 | 1601 | enable => $enable, |
11bac5c2 | 1602 | comment => $comment, |
51bae274 | 1603 | action => $action, |
e5076eee | 1604 | macro => $macro, |
51bae274 DM |
1605 | iface => $iface, |
1606 | source => $source, | |
1607 | dest => $dest, | |
51bae274 DM |
1608 | proto => $proto, |
1609 | dport => $dport, | |
1610 | sport => $sport, | |
51bae274 DM |
1611 | }; |
1612 | } | |
1613 | ||
2d404ffc | 1614 | sub parse_vmfw_option { |
85c6eaed DM |
1615 | my ($line) = @_; |
1616 | ||
1617 | my ($opt, $value); | |
1618 | ||
178a63be DM |
1619 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
1620 | ||
b47ecc88 | 1621 | if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
1622 | $opt = lc($1); |
1623 | $value = int($2); | |
178a63be DM |
1624 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
1625 | $opt = lc($1); | |
1626 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1627 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
1628 | $opt = lc($1); |
1629 | $value = uc($3); | |
b47ecc88 AD |
1630 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
1631 | $opt = lc($1); | |
1632 | $value = $2; | |
9c6b6efd | 1633 | } else { |
85c6eaed DM |
1634 | chomp $line; |
1635 | die "can't parse option '$line'\n" | |
1636 | } | |
1637 | ||
1638 | return ($opt, $value); | |
1639 | } | |
1640 | ||
2d404ffc DM |
1641 | sub parse_hostfw_option { |
1642 | my ($line) = @_; | |
1643 | ||
1644 | my ($opt, $value); | |
1645 | ||
1646 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
1647 | ||
cc10e5d7 | 1648 | if ($line =~ m/^(enable|dhcp|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) { |
2d404ffc DM |
1649 | $opt = lc($1); |
1650 | $value = int($2); | |
178a63be | 1651 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
1652 | $opt = lc($1); |
1653 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1654 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2d404ffc DM |
1655 | $opt = lc($1); |
1656 | $value = uc($3); | |
490cdead DM |
1657 | } elsif ($line =~ m/^(nf_conntrack_max):\s*(\d+)\s*$/i) { |
1658 | $opt = lc($1); | |
1659 | $value = int($2); | |
2d404ffc DM |
1660 | } else { |
1661 | chomp $line; | |
1662 | die "can't parse option '$line'\n" | |
1663 | } | |
1664 | ||
1665 | return ($opt, $value); | |
1666 | } | |
1667 | ||
c6f5cc88 DM |
1668 | sub parse_clusterfw_option { |
1669 | my ($line) = @_; | |
1670 | ||
1671 | my ($opt, $value); | |
1672 | ||
1673 | if ($line =~ m/^(enable):\s*(0|1)\s*$/i) { | |
1674 | $opt = lc($1); | |
1675 | $value = int($2); | |
1676 | } else { | |
1677 | chomp $line; | |
1678 | die "can't parse option '$line'\n" | |
1679 | } | |
1680 | ||
1681 | return ($opt, $value); | |
1682 | } | |
1683 | ||
51bae274 DM |
1684 | sub parse_vm_fw_rules { |
1685 | my ($filename, $fh) = @_; | |
1686 | ||
92e976b3 | 1687 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1688 | |
1689 | my $section; | |
1690 | ||
e7b35711 DM |
1691 | my $digest = Digest::SHA->new('sha1'); |
1692 | ||
5e1267a5 | 1693 | while (defined(my $line = <$fh>)) { |
e7b35711 DM |
1694 | $digest->add($line); |
1695 | ||
5e1267a5 DM |
1696 | next if $line =~ m/^#/; |
1697 | next if $line =~ m/^\s*$/; | |
1698 | ||
961b4928 DM |
1699 | my $linenr = $fh->input_line_number(); |
1700 | my $prefix = "$filename (line $linenr)"; | |
1701 | ||
85c6eaed | 1702 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
5e1267a5 | 1703 | $section = lc($1); |
85c6eaed | 1704 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1705 | next; |
1706 | } | |
51bae274 | 1707 | if (!$section) { |
961b4928 | 1708 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1709 | next; |
1710 | } | |
1711 | ||
85c6eaed DM |
1712 | next if !$res->{$section}; # skip undefined section |
1713 | ||
1714 | if ($section eq 'options') { | |
6158271d | 1715 | eval { |
2d404ffc | 1716 | my ($opt, $value) = parse_vmfw_option($line); |
85c6eaed DM |
1717 | $res->{options}->{$opt} = $value; |
1718 | }; | |
1719 | warn "$prefix: $@" if $@; | |
1720 | next; | |
1721 | } | |
1722 | ||
e5076eee DM |
1723 | my $rule; |
1724 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
51bae274 | 1725 | if (my $err = $@) { |
961b4928 | 1726 | warn "$prefix: $err"; |
5e1267a5 DM |
1727 | next; |
1728 | } | |
1729 | ||
e5076eee | 1730 | push @{$res->{$section}}, $rule; |
51bae274 DM |
1731 | } |
1732 | ||
e7b35711 DM |
1733 | $res->{digest} = $digest->b64digest; |
1734 | ||
51bae274 DM |
1735 | return $res; |
1736 | } | |
1737 | ||
1738 | sub parse_host_fw_rules { | |
1739 | my ($filename, $fh) = @_; | |
1740 | ||
92e976b3 | 1741 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1742 | |
1743 | my $section; | |
1744 | ||
8b27beb9 DM |
1745 | my $digest = Digest::SHA->new('sha1'); |
1746 | ||
51bae274 | 1747 | while (defined(my $line = <$fh>)) { |
8b27beb9 DM |
1748 | $digest->add($line); |
1749 | ||
51bae274 DM |
1750 | next if $line =~ m/^#/; |
1751 | next if $line =~ m/^\s*$/; | |
1752 | ||
961b4928 DM |
1753 | my $linenr = $fh->input_line_number(); |
1754 | my $prefix = "$filename (line $linenr)"; | |
1755 | ||
2d404ffc | 1756 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
51bae274 | 1757 | $section = lc($1); |
2d404ffc | 1758 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1759 | next; |
1760 | } | |
51bae274 | 1761 | if (!$section) { |
961b4928 | 1762 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1763 | next; |
1764 | } | |
1765 | ||
2d404ffc DM |
1766 | next if !$res->{$section}; # skip undefined section |
1767 | ||
1768 | if ($section eq 'options') { | |
1769 | eval { | |
2d404ffc DM |
1770 | my ($opt, $value) = parse_hostfw_option($line); |
1771 | $res->{options}->{$opt} = $value; | |
1772 | }; | |
1773 | warn "$prefix: $@" if $@; | |
1774 | next; | |
1775 | } | |
1776 | ||
e5076eee DM |
1777 | my $rule; |
1778 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
ecbea048 | 1779 | if (my $err = $@) { |
961b4928 | 1780 | warn "$prefix: $err"; |
ecbea048 | 1781 | next; |
ecbea048 | 1782 | } |
cbb5d6f3 | 1783 | |
e5076eee | 1784 | push @{$res->{$section}}, $rule; |
51bae274 | 1785 | } |
ecbea048 | 1786 | |
cbb5d6f3 | 1787 | $res->{digest} = $digest->b64digest; |
8b27beb9 | 1788 | |
51bae274 DM |
1789 | return $res; |
1790 | } | |
4cdbb3b7 | 1791 | |
c6f5cc88 | 1792 | sub parse_cluster_fw_rules { |
51bae274 | 1793 | my ($filename, $fh) = @_; |
5e1267a5 | 1794 | |
51bae274 DM |
1795 | my $section; |
1796 | my $group; | |
1797 | ||
c4a2e5ae | 1798 | my $res = { rules => [], options => {}, groups => {}, ipset => {} }; |
6158271d | 1799 | |
d1c53b3e DM |
1800 | my $digest = Digest::SHA->new('sha1'); |
1801 | ||
51bae274 | 1802 | while (defined(my $line = <$fh>)) { |
d1c53b3e DM |
1803 | $digest->add($line); |
1804 | ||
51bae274 DM |
1805 | next if $line =~ m/^#/; |
1806 | next if $line =~ m/^\s*$/; | |
1807 | ||
961b4928 DM |
1808 | my $linenr = $fh->input_line_number(); |
1809 | my $prefix = "$filename (line $linenr)"; | |
1810 | ||
c6f5cc88 DM |
1811 | if ($line =~ m/^\[options\]$/i) { |
1812 | $section = 'options'; | |
1813 | next; | |
1814 | } | |
1815 | ||
92e976b3 | 1816 | if ($line =~ m/^\[group\s+(\S+)\]\s*$/i) { |
c6f5cc88 | 1817 | $section = 'groups'; |
92e976b3 | 1818 | $group = lc($1); |
51bae274 DM |
1819 | next; |
1820 | } | |
34cdedfa | 1821 | |
c6f5cc88 DM |
1822 | if ($line =~ m/^\[rules\]$/i) { |
1823 | $section = 'rules'; | |
1824 | next; | |
1825 | } | |
cbb5d6f3 | 1826 | |
936af352 | 1827 | if ($line =~ m/^\[ipset\s+(\S+)\]\s*$/i) { |
34cdedfa AD |
1828 | $section = 'ipset'; |
1829 | $group = lc($1); | |
34cdedfa AD |
1830 | next; |
1831 | } | |
1832 | ||
c6f5cc88 | 1833 | if (!$section) { |
cbb5d6f3 | 1834 | warn "$prefix: skip line - no section\n"; |
51bae274 DM |
1835 | next; |
1836 | } | |
1837 | ||
c6f5cc88 DM |
1838 | if ($section eq 'options') { |
1839 | eval { | |
1840 | my ($opt, $value) = parse_clusterfw_option($line); | |
1841 | $res->{options}->{$opt} = $value; | |
1842 | }; | |
1843 | warn "$prefix: $@" if $@; | |
1844 | } elsif ($section eq 'rules') { | |
1845 | my $rule; | |
1846 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
1847 | if (my $err = $@) { | |
1848 | warn "$prefix: $err"; | |
1849 | next; | |
1850 | } | |
1851 | push @{$res->{$section}}, $rule; | |
1852 | } elsif ($section eq 'groups') { | |
34cdedfa AD |
1853 | my $rule; |
1854 | eval { $rule = parse_fw_rule($line, 0, 0); }; | |
1855 | if (my $err = $@) { | |
1856 | warn "$prefix: $err"; | |
1857 | next; | |
1858 | } | |
3f95d14a | 1859 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a DM |
1860 | } elsif ($section eq 'ipset') { |
1861 | chomp $line; | |
cbb5d6f3 | 1862 | $line =~ m/^(\!)?\s*((\d+)\.(\d+)\.(\d+)\.(\d+)(\/(\d+))?)/; |
2a052ee3 | 1863 | my $nomatch = $1; |
cbb5d6f3 | 1864 | my $ip = $2; |
2a052ee3 AD |
1865 | |
1866 | if(!$ip){ | |
cbb5d6f3 | 1867 | warn "$prefix: $line is not an valid ip address\n"; |
34cdedfa AD |
1868 | next; |
1869 | } | |
2a052ee3 | 1870 | if (!Net::IP->new($ip)) { |
cbb5d6f3 | 1871 | warn "$prefix: $line is not an valid ip address\n"; |
2a052ee3 AD |
1872 | next; |
1873 | } | |
2a052ee3 | 1874 | |
cbb5d6f3 DM |
1875 | if ($nomatch) { |
1876 | if ($feature_ipset_nomatch) { | |
1877 | push @{$res->{$section}->{$group}}, "$ip nomatch"; | |
1878 | } else { | |
1879 | warn "$prefix: ignore $line - nomatch not supported by kernel\n"; | |
1880 | } | |
1881 | } else { | |
1882 | push @{$res->{$section}->{$group}}, $ip; | |
1883 | } | |
51bae274 | 1884 | } |
5e1267a5 DM |
1885 | } |
1886 | ||
d1c53b3e | 1887 | $res->{digest} = $digest->b64digest; |
5e1267a5 DM |
1888 | return $res; |
1889 | } | |
1890 | ||
06320eb0 DM |
1891 | sub run_locked { |
1892 | my ($code, @param) = @_; | |
1893 | ||
1894 | my $timeout = 10; | |
1895 | ||
1896 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
1897 | ||
1898 | die $@ if $@; | |
1899 | ||
1900 | return $res; | |
1901 | } | |
1902 | ||
5e1267a5 DM |
1903 | sub read_local_vm_config { |
1904 | ||
1905 | my $openvz = {}; | |
5e1267a5 DM |
1906 | my $qemu = {}; |
1907 | ||
c8301d63 | 1908 | my $vmdata = { openvz => $openvz, qemu => $qemu }; |
5e1267a5 | 1909 | |
c8301d63 DM |
1910 | my $vmlist = PVE::Cluster::get_vmlist(); |
1911 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
1912 | my $ids = $vmlist->{ids}; | |
1913 | ||
1914 | foreach my $vmid (keys %$ids) { | |
1915 | next if !$vmid; # skip VE0 | |
1916 | my $d = $ids->{$vmid}; | |
1917 | next if !$d->{node} || $d->{node} ne $nodename; | |
1918 | next if !$d->{type}; | |
1919 | if ($d->{type} eq 'openvz') { | |
d9fee004 DM |
1920 | if ($have_pve_manager) { |
1921 | my $cfspath = PVE::OpenVZ::cfs_config_path($vmid); | |
1922 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
1923 | $openvz->{$vmid} = $conf; | |
1924 | } | |
c8301d63 DM |
1925 | } |
1926 | } elsif ($d->{type} eq 'qemu') { | |
d9fee004 DM |
1927 | if ($have_qemu_server) { |
1928 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); | |
1929 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
1930 | $qemu->{$vmid} = $conf; | |
1931 | } | |
c8301d63 | 1932 | } |
5e1267a5 DM |
1933 | } |
1934 | } | |
d9fee004 | 1935 | |
5e1267a5 DM |
1936 | return $vmdata; |
1937 | }; | |
1938 | ||
e7b35711 DM |
1939 | sub load_vmfw_conf { |
1940 | my ($vmid) = @_; | |
1941 | ||
1942 | my $vmfw_conf = {}; | |
1943 | ||
1944 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
1945 | if (my $fh = IO::File->new($filename, O_RDONLY)) { | |
1946 | $vmfw_conf = parse_vm_fw_rules($filename, $fh); | |
1947 | } | |
1948 | ||
1949 | return $vmfw_conf; | |
1950 | } | |
1951 | ||
464f933e DM |
1952 | my $format_rules = sub { |
1953 | my ($rules, $need_iface) = @_; | |
1954 | ||
1955 | my $raw = ''; | |
1956 | ||
1957 | foreach my $rule (@$rules) { | |
1958 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
1959 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; | |
1960 | $raw .= uc($rule->{type}); | |
1961 | $raw .= " " . $rule->{action}; | |
1962 | $raw .= " " . ($rule->{iface} || '-') if $need_iface; | |
1963 | $raw .= " " . ($rule->{source} || '-'); | |
1964 | $raw .= " " . ($rule->{dest} || '-'); | |
1965 | $raw .= " " . ($rule->{proto} || '-'); | |
1966 | $raw .= " " . ($rule->{dport} || '-'); | |
1967 | $raw .= " " . ($rule->{sport} || '-'); | |
cbb5d6f3 | 1968 | $raw .= " # " . encode('utf8', $rule->{comment}) |
464f933e DM |
1969 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; |
1970 | $raw .= "\n"; | |
1971 | } else { | |
1972 | die "implement me '$rule->{type}'"; | |
1973 | } | |
1974 | } | |
1975 | ||
1976 | return $raw; | |
1977 | }; | |
1978 | ||
1979 | my $format_options = sub { | |
68c90e21 DM |
1980 | my ($options) = @_; |
1981 | ||
1982 | my $raw = ''; | |
464f933e DM |
1983 | |
1984 | $raw .= "[OPTIONS]\n\n"; | |
1985 | foreach my $opt (keys %$options) { | |
1986 | $raw .= "$opt: $options->{$opt}\n"; | |
1987 | } | |
1988 | $raw .= "\n"; | |
68c90e21 DM |
1989 | |
1990 | return $raw; | |
464f933e DM |
1991 | }; |
1992 | ||
1993 | sub save_vmfw_conf { | |
1994 | my ($vmid, $vmfw_conf) = @_; | |
1995 | ||
1996 | my $raw = ''; | |
1997 | ||
1998 | my $options = $vmfw_conf->{options}; | |
68c90e21 | 1999 | $raw .= &$format_options($options) if scalar(keys %$options); |
cbb5d6f3 | 2000 | |
464f933e DM |
2001 | my $rules = $vmfw_conf->{rules}; |
2002 | if (scalar(@$rules)) { | |
2003 | $raw .= "[RULES]\n\n"; | |
2004 | $raw .= &$format_rules($rules, 1); | |
2005 | $raw .= "\n"; | |
2006 | } | |
2007 | ||
2008 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
2009 | PVE::Tools::file_set_contents($filename, $raw); | |
2010 | } | |
2011 | ||
6fc63ffd | 2012 | sub read_vm_firewall_configs { |
5e1267a5 | 2013 | my ($vmdata) = @_; |
6fc63ffd | 2014 | my $vmfw_configs = {}; |
c8301d63 | 2015 | |
5e1267a5 | 2016 | foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) { |
e7b35711 DM |
2017 | my $vmfw_conf = load_vmfw_conf($vmid); |
2018 | next if !$vmfw_conf->{options}; # skip if file does not exists | |
2019 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
5e1267a5 DM |
2020 | } |
2021 | ||
6fc63ffd | 2022 | return $vmfw_configs; |
5e1267a5 DM |
2023 | } |
2024 | ||
2d404ffc DM |
2025 | sub get_option_log_level { |
2026 | my ($options, $k) = @_; | |
2027 | ||
2028 | my $v = $options->{$k}; | |
178a63be | 2029 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
2030 | |
2031 | return undef if $v eq '' || $v eq 'nolog'; | |
2032 | ||
2033 | $v = $log_level_hash->{$v} if defined($log_level_hash->{$v}); | |
2034 | ||
2035 | return $v if ($v >= 0) && ($v <= 7); | |
2036 | ||
2037 | warn "unknown log level ($k = '$v')\n"; | |
2038 | ||
2039 | return undef; | |
2040 | } | |
2041 | ||
d8f2505e | 2042 | sub generate_std_chains { |
2d404ffc | 2043 | my ($ruleset, $options) = @_; |
cbb5d6f3 | 2044 | |
2d404ffc DM |
2045 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); |
2046 | ||
2047 | # same as shorewall smurflog. | |
782c4cde DM |
2048 | my $chain = 'PVEFW-smurflog'; |
2049 | ||
2050 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2051 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
2d404ffc DM |
2052 | |
2053 | # same as shorewall logflags action. | |
2054 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde DM |
2055 | $chain = 'PVEFW-logflags'; |
2056 | # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG) | |
2057 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2058 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
d8f2505e DM |
2059 | |
2060 | foreach my $chain (keys %$pve_std_chains) { | |
2061 | ruleset_create_chain($ruleset, $chain); | |
2062 | foreach my $rule (@{$pve_std_chains->{$chain}}) { | |
2063 | if (ref($rule)) { | |
2064 | ruleset_generate_rule($ruleset, $chain, $rule); | |
2065 | } else { | |
2066 | ruleset_addrule($ruleset, $chain, $rule); | |
2067 | } | |
2068 | } | |
2069 | } | |
2070 | } | |
2071 | ||
34cdedfa | 2072 | sub generate_ipset_chains { |
dd7a13fd | 2073 | my ($ipset_ruleset, $fw_conf) = @_; |
34cdedfa | 2074 | |
dd7a13fd | 2075 | foreach my $ipset (keys %{$fw_conf->{ipset}}) { |
4b96e877 | 2076 | generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}); |
34cdedfa AD |
2077 | } |
2078 | } | |
2079 | ||
2080 | sub generate_ipset { | |
2081 | my ($ipset_ruleset, $name, $options) = @_; | |
2082 | ||
dd7a13fd DM |
2083 | my $hashsize = scalar(@$options); |
2084 | if ($hashsize <= 64) { | |
2a052ee3 | 2085 | $hashsize = 64; |
dd7a13fd | 2086 | } else { |
2a052ee3 AD |
2087 | $hashsize = round_powerof2($hashsize); |
2088 | } | |
2089 | ||
dd7a13fd | 2090 | push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize"; |
34cdedfa | 2091 | |
dd7a13fd | 2092 | foreach my $ip (@$options) { |
34cdedfa AD |
2093 | push @{$ipset_ruleset->{$name}}, "add $name $ip"; |
2094 | } | |
2a052ee3 AD |
2095 | } |
2096 | ||
2097 | sub round_powerof2 { | |
dd7a13fd | 2098 | my ($int) = @_; |
2a052ee3 | 2099 | |
dd7a13fd DM |
2100 | $int--; |
2101 | $int |= $int >> $_ foreach (1,2,4,8,16); | |
2102 | return ++$int; | |
34cdedfa AD |
2103 | } |
2104 | ||
6b9f68a2 DM |
2105 | sub save_pvefw_status { |
2106 | my ($status) = @_; | |
2107 | ||
2108 | die "unknown status '$status' - internal error" | |
2109 | if $status !~ m/^(stopped|active)$/; | |
2110 | ||
2111 | mkdir dirname($pve_fw_status_filename); | |
2112 | PVE::Tools::file_set_contents($pve_fw_status_filename, $status); | |
2113 | } | |
2114 | ||
2115 | sub read_pvefw_status { | |
2116 | ||
2117 | my $status = 'unknown'; | |
2118 | ||
2119 | return 'stopped' if ! -f $pve_fw_status_filename; | |
2120 | ||
2121 | eval { | |
2122 | $status = PVE::Tools::file_get_contents($pve_fw_status_filename); | |
2123 | }; | |
2124 | warn $@ if $@; | |
2125 | ||
2126 | return $status; | |
2127 | } | |
2128 | ||
530c005e DM |
2129 | # fixme: move to pve-common PVE::ProcFSTools |
2130 | sub read_proc_net_route { | |
2131 | my $filename = "/proc/net/route"; | |
2132 | ||
2133 | my $res = {}; | |
2134 | ||
2135 | my $fh = IO::File->new ($filename, "r"); | |
2136 | return $res if !$fh; | |
2137 | ||
2138 | my $int_to_quad = sub { | |
2139 | return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0); | |
2140 | }; | |
2141 | ||
2142 | while (defined(my $line = <$fh>)) { | |
2143 | next if $line =~/^Iface\s+Destination/; # skip head | |
2144 | my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8]; | |
2145 | push @{$res->{$iface}}, { | |
2146 | dest => &$int_to_quad(hex($dest)), | |
2147 | gateway => &$int_to_quad(hex($gateway)), | |
2148 | mask => &$int_to_quad(hex($mask)), | |
2149 | metric => $metric, | |
2150 | mtu => $mtu, | |
2151 | }; | |
2152 | } | |
2153 | ||
2154 | return $res; | |
2155 | } | |
2156 | ||
fca39c2c | 2157 | sub load_clusterfw_conf { |
530c005e | 2158 | |
fca39c2c DM |
2159 | my $cluster_conf = {}; |
2160 | if (my $fh = IO::File->new($clusterfw_conf_filename, O_RDONLY)) { | |
c6f5cc88 | 2161 | $cluster_conf = parse_cluster_fw_rules($clusterfw_conf_filename, $fh); |
51bae274 | 2162 | } |
5e1267a5 | 2163 | |
fca39c2c | 2164 | return $cluster_conf; |
e5d76bde DM |
2165 | } |
2166 | ||
fca39c2c DM |
2167 | sub save_clusterfw_conf { |
2168 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
2169 | |
2170 | my $raw = ''; | |
9c7e0858 | 2171 | |
c6f5cc88 | 2172 | my $options = $cluster_conf->{options}; |
68c90e21 | 2173 | $raw .= &$format_options($options) if scalar(keys %$options); |
9c7e0858 | 2174 | |
c6f5cc88 DM |
2175 | # fixme: save ipset |
2176 | ||
2177 | my $rules = $cluster_conf->{rules}; | |
2178 | if (scalar(@$rules)) { | |
2179 | $raw .= "[RULES]\n\n"; | |
63c91681 | 2180 | $raw .= &$format_rules($rules, 1); |
c6f5cc88 DM |
2181 | $raw .= "\n"; |
2182 | } | |
2183 | ||
2184 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
2185 | my $rules = $cluster_conf->{groups}->{$group}; | |
2186 | $raw .= "[group $group]\n\n"; | |
63c91681 | 2187 | $raw .= &$format_rules($rules, 0); |
9c7e0858 DM |
2188 | $raw .= "\n"; |
2189 | } | |
2190 | ||
fca39c2c | 2191 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); |
9c7e0858 DM |
2192 | } |
2193 | ||
8b27beb9 DM |
2194 | sub load_hostfw_conf { |
2195 | ||
2196 | my $hostfw_conf = {}; | |
63c91681 DM |
2197 | if (my $fh = IO::File->new($hostfw_conf_filename, O_RDONLY)) { |
2198 | $hostfw_conf = parse_host_fw_rules($hostfw_conf_filename, $fh); | |
8b27beb9 DM |
2199 | } |
2200 | return $hostfw_conf; | |
2201 | } | |
2202 | ||
63c91681 DM |
2203 | sub save_hostfw_conf { |
2204 | my ($hostfw_conf) = @_; | |
2205 | ||
2206 | my $raw = ''; | |
2207 | ||
2208 | my $options = $hostfw_conf->{options}; | |
68c90e21 | 2209 | $raw .= &$format_options($options) if scalar(keys %$options); |
cbb5d6f3 | 2210 | |
63c91681 DM |
2211 | my $rules = $hostfw_conf->{rules}; |
2212 | if (scalar(@$rules)) { | |
2213 | $raw .= "[RULES]\n\n"; | |
2214 | $raw .= &$format_rules($rules, 1); | |
2215 | $raw .= "\n"; | |
2216 | } | |
2217 | ||
2218 | PVE::Tools::file_set_contents($hostfw_conf_filename, $raw); | |
2219 | } | |
2220 | ||
e5d76bde DM |
2221 | sub compile { |
2222 | my $vmdata = read_local_vm_config(); | |
2223 | my $vmfw_configs = read_vm_firewall_configs($vmdata); | |
2224 | ||
2225 | my $routing_table = read_proc_net_route(); | |
2226 | ||
fca39c2c | 2227 | my $cluster_conf = load_clusterfw_conf(); |
e5d76bde | 2228 | |
34cdedfa | 2229 | my $ipset_ruleset = {}; |
fca39c2c | 2230 | generate_ipset_chains($ipset_ruleset, $cluster_conf); |
34cdedfa | 2231 | |
3fa83edf DM |
2232 | my $ruleset = {}; |
2233 | ||
dec84fcd DM |
2234 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
2235 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 2236 | |
fadb13dd | 2237 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
3fa83edf | 2238 | |
8b27beb9 DM |
2239 | my $hostfw_conf = load_hostfw_conf(); |
2240 | my $hostfw_options = $hostfw_conf->{options} || {}; | |
fadb13dd | 2241 | |
92e976b3 | 2242 | generate_std_chains($ruleset, $hostfw_options); |
fadb13dd | 2243 | |
6d2ab017 | 2244 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 2245 | |
fca39c2c | 2246 | enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable; |
3fa83edf | 2247 | |
6158271d | 2248 | # generate firewall rules for QEMU VMs |
3fa83edf DM |
2249 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
2250 | my $conf = $vmdata->{qemu}->{$vmid}; | |
6fc63ffd | 2251 | my $vmfw_conf = $vmfw_configs->{$vmid}; |
fa9c4a6f DM |
2252 | next if !$vmfw_conf; |
2253 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
3fa83edf DM |
2254 | |
2255 | foreach my $netid (keys %$conf) { | |
2256 | next if $netid !~ m/^net(\d+)$/; | |
2257 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
2258 | next if !$net; | |
2259 | my $iface = "tap${vmid}i$1"; | |
5e1267a5 | 2260 | |
3fa83edf DM |
2261 | my $bridge = $net->{bridge}; |
2262 | next if !$bridge; # fixme: ? | |
2263 | ||
2264 | $bridge .= "v$net->{tag}" if $net->{tag}; | |
2265 | ||
530c005e | 2266 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
3fa83edf | 2267 | |
c29f55c9 | 2268 | my $macaddr = $net->{macaddr}; |
cbb5d6f3 | 2269 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2270 | $vmfw_conf, $vmid, $bridge, 'IN'); |
cbb5d6f3 | 2271 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2272 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
3fa83edf DM |
2273 | } |
2274 | } | |
c8301d63 DM |
2275 | |
2276 | # generate firewall rules for OpenVZ containers | |
2277 | foreach my $vmid (keys %{$vmdata->{openvz}}) { | |
2278 | my $conf = $vmdata->{openvz}->{$vmid}; | |
2279 | ||
2280 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
2281 | next if !$vmfw_conf; | |
2282 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
2283 | ||
2284 | if ($conf->{ip_address} && $conf->{ip_address}->{value}) { | |
2285 | my $ip = $conf->{ip_address}->{value}; | |
fca39c2c DM |
2286 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN'); |
2287 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT'); | |
c8301d63 DM |
2288 | } |
2289 | ||
2290 | if ($conf->{netif} && $conf->{netif}->{value}) { | |
2291 | my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value}); | |
c8301d63 DM |
2292 | foreach my $netid (keys %$netif) { |
2293 | my $d = $netif->{$netid}; | |
2294 | my $bridge = $d->{bridge}; | |
2295 | if (!$bridge) { | |
2296 | warn "no bridge device for CT $vmid iface '$netid'\n"; | |
2297 | next; # fixme? | |
2298 | } | |
cbb5d6f3 | 2299 | |
530c005e DM |
2300 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
2301 | ||
12d0f130 | 2302 | my $macaddr = $d->{mac}; |
c8301d63 | 2303 | my $iface = $d->{host_ifname}; |
cbb5d6f3 | 2304 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2305 | $vmfw_conf, $vmid, $bridge, 'IN'); |
cbb5d6f3 | 2306 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2307 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
c8301d63 DM |
2308 | } |
2309 | } | |
2310 | } | |
c0413e35 | 2311 | |
cc10e5d7 | 2312 | if($hostfw_options->{optimize}){ |
da6fc60b | 2313 | |
e9d9a73e | 2314 | my $accept = ruleset_chain_exist($ruleset, "PVEFW-IPS") ? "PVEFW-IPS" : "ACCEPT"; |
da6fc60b | 2315 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
cc10e5d7 AD |
2316 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP"); |
2317 | } | |
2318 | ||
eba0fb64 DM |
2319 | # fixme: what log level should we use here? |
2320 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
2321 | ||
c98c037d DM |
2322 | # fixme: should we really block inter-bridge traffic? |
2323 | ||
2324 | # always allow traffic from containers? | |
2325 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN"); | |
2326 | ||
eba0fb64 | 2327 | # disable interbridge routing |
cbb5d6f3 | 2328 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop"); |
eba0fb64 | 2329 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop"); |
cbb5d6f3 DM |
2330 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+"); |
2331 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+"); | |
2332 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP"); | |
eba0fb64 DM |
2333 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP"); |
2334 | ||
34cdedfa | 2335 | return wantarray ? ($ruleset, $hostfw_conf, $ipset_ruleset) : $ruleset; |
3fa83edf DM |
2336 | } |
2337 | ||
2338 | sub get_ruleset_status { | |
4bd0a9c4 | 2339 | my ($ruleset, $active_chains, $digest_fn, $verbose) = @_; |
3fa83edf DM |
2340 | |
2341 | my $statushash = {}; | |
2342 | ||
2343 | foreach my $chain (sort keys %$ruleset) { | |
4bd0a9c4 | 2344 | my $sig = &$digest_fn($ruleset->{$chain}); |
9bf7d929 | 2345 | |
3fa83edf DM |
2346 | $statushash->{$chain}->{sig} = $sig; |
2347 | ||
2348 | my $oldsig = $active_chains->{$chain}; | |
2349 | if (!defined($oldsig)) { | |
2350 | $statushash->{$chain}->{action} = 'create'; | |
2351 | } else { | |
2352 | if ($oldsig eq $sig) { | |
2353 | $statushash->{$chain}->{action} = 'exists'; | |
2354 | } else { | |
2355 | $statushash->{$chain}->{action} = 'update'; | |
2356 | } | |
2357 | } | |
2358 | print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose; | |
2359 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2360 | print "\t$cmd\n" if $verbose; | |
2361 | } | |
2362 | } | |
2363 | ||
2364 | foreach my $chain (sort keys %$active_chains) { | |
2365 | if (!defined($ruleset->{$chain})) { | |
2366 | my $sig = $active_chains->{$chain}; | |
2367 | $statushash->{$chain}->{action} = 'delete'; | |
2368 | $statushash->{$chain}->{sig} = $sig; | |
2369 | print "delete $chain ($sig)\n" if $verbose; | |
2370 | } | |
6158271d | 2371 | } |
2a052ee3 | 2372 | |
3fa83edf DM |
2373 | return $statushash; |
2374 | } | |
2375 | ||
3fa83edf DM |
2376 | sub print_sig_rule { |
2377 | my ($chain, $sig) = @_; | |
2378 | ||
09d5f68e DM |
2379 | # We just use this to store a SHA1 checksum used to detect changes |
2380 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
2381 | } |
2382 | ||
df7cb349 | 2383 | sub get_ruleset_cmdlist { |
a84f4d96 | 2384 | my ($ruleset, $verbose) = @_; |
3fa83edf | 2385 | |
3fa83edf | 2386 | my $cmdlist = "*filter\n"; # we pass this to iptables-restore; |
cbb5d6f3 | 2387 | |
4bd0a9c4 DM |
2388 | my ($active_chains, $hooks) = iptables_get_chains(); |
2389 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose); | |
3fa83edf DM |
2390 | |
2391 | # create missing chains first | |
2392 | foreach my $chain (sort keys %$ruleset) { | |
2393 | my $stat = $statushash->{$chain}; | |
2394 | die "internal error" if !$stat; | |
2395 | next if $stat->{action} ne 'create'; | |
886aba9c | 2396 | |
3fa83edf DM |
2397 | $cmdlist .= ":$chain - [0:0]\n"; |
2398 | } | |
2399 | ||
4bd0a9c4 DM |
2400 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { |
2401 | if (!$hooks->{$h}) { | |
2402 | $cmdlist .= "-A $h -j PVEFW-$h\n"; | |
2403 | } | |
3fa83edf DM |
2404 | } |
2405 | ||
2406 | foreach my $chain (sort keys %$ruleset) { | |
2407 | my $stat = $statushash->{$chain}; | |
2408 | die "internal error" if !$stat; | |
2409 | ||
2410 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
2411 | $cmdlist .= "-F $chain\n"; | |
2412 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2413 | $cmdlist .= "$cmd\n"; | |
2414 | } | |
2415 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
2416 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 2417 | die "internal error"; # this should not happen |
3fa83edf DM |
2418 | } elsif ($stat->{action} eq 'exists') { |
2419 | # do nothing | |
2420 | } else { | |
2421 | die "internal error - unknown status '$stat->{action}'"; | |
2422 | } | |
2423 | } | |
2424 | ||
f5d28682 DM |
2425 | foreach my $chain (keys %$statushash) { |
2426 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2427 | $cmdlist .= "-F $chain\n"; | |
2428 | } | |
2429 | foreach my $chain (keys %$statushash) { | |
2430 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
2431 | next if $chain eq 'PVEFW-INPUT'; |
2432 | next if $chain eq 'PVEFW-OUTPUT'; | |
2433 | next if $chain eq 'PVEFW-FORWARD'; | |
f5d28682 DM |
2434 | $cmdlist .= "-X $chain\n"; |
2435 | } | |
2436 | ||
3f95d14a | 2437 | my $changes = $cmdlist ne "*filter\n" ? 1 : 0; |
4bd0a9c4 | 2438 | |
3fa83edf DM |
2439 | $cmdlist .= "COMMIT\n"; |
2440 | ||
3f95d14a | 2441 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
2442 | } |
2443 | ||
34cdedfa | 2444 | sub get_ipset_cmdlist { |
dd7a13fd | 2445 | my ($ruleset, $verbose) = @_; |
34cdedfa AD |
2446 | |
2447 | my $cmdlist = ""; | |
2448 | ||
dd7a13fd DM |
2449 | my $delete_cmdlist = ""; |
2450 | ||
4bd0a9c4 DM |
2451 | my $active_chains = ipset_get_chains(); |
2452 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose); | |
34cdedfa | 2453 | |
dd7a13fd DM |
2454 | foreach my $chain (sort keys %$ruleset) { |
2455 | my $stat = $statushash->{$chain}; | |
2456 | die "internal error" if !$stat; | |
2a052ee3 | 2457 | |
dd7a13fd DM |
2458 | if ($stat->{action} eq 'create') { |
2459 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
34cdedfa AD |
2460 | $cmdlist .= "$cmd\n"; |
2461 | } | |
dd7a13fd | 2462 | } |
34cdedfa | 2463 | |
dd7a13fd DM |
2464 | if ($stat->{action} eq 'update') { |
2465 | my $chain_swap = $chain."_swap"; | |
cbb5d6f3 | 2466 | |
dd7a13fd DM |
2467 | foreach my $cmd (@{$ruleset->{$chain}}) { |
2468 | $cmd =~ s/$chain/$chain_swap/; | |
2469 | $cmdlist .= "$cmd\n"; | |
34cdedfa | 2470 | } |
dd7a13fd DM |
2471 | $cmdlist .= "swap $chain_swap $chain\n"; |
2472 | $cmdlist .= "flush $chain_swap\n"; | |
2473 | $cmdlist .= "destroy $chain_swap\n"; | |
2a052ee3 | 2474 | } |
34cdedfa | 2475 | |
dd7a13fd | 2476 | } |
3f95d14a | 2477 | |
dd7a13fd DM |
2478 | foreach my $chain (keys %$statushash) { |
2479 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2a052ee3 | 2480 | |
dd7a13fd DM |
2481 | $delete_cmdlist .= "flush $chain\n"; |
2482 | $delete_cmdlist .= "destroy $chain\n"; | |
34cdedfa AD |
2483 | } |
2484 | ||
dd7a13fd | 2485 | my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0; |
cbb5d6f3 | 2486 | |
dd7a13fd | 2487 | return ($cmdlist, $delete_cmdlist, $changes); |
34cdedfa AD |
2488 | } |
2489 | ||
6b9f68a2 | 2490 | sub apply_ruleset { |
34cdedfa | 2491 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_; |
6b9f68a2 DM |
2492 | |
2493 | enable_bridge_firewall(); | |
2494 | ||
edb75ba9 DM |
2495 | update_nf_conntrack_max($hostfw_conf); |
2496 | ||
cbb5d6f3 | 2497 | my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) = |
81a0bf43 | 2498 | get_ipset_cmdlist($ipset_ruleset, undef, $verbose); |
6b9f68a2 | 2499 | |
81a0bf43 | 2500 | my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose); |
2a052ee3 | 2501 | |
81a0bf43 DM |
2502 | if ($verbose) { |
2503 | if ($ipset_changes) { | |
2504 | print "ipset changes:\n"; | |
2505 | print $ipset_create_cmdlist if $ipset_create_cmdlist; | |
2506 | print $ipset_delete_cmdlist if $ipset_delete_cmdlist; | |
2507 | } | |
3f95d14a | 2508 | |
81a0bf43 DM |
2509 | if ($changes) { |
2510 | print "iptables changes:\n"; | |
2511 | print $cmdlist; | |
2512 | } | |
2513 | } | |
3fa83edf | 2514 | |
2a052ee3 | 2515 | ipset_restore_cmdlist($ipset_create_cmdlist); |
34cdedfa | 2516 | |
3fa83edf DM |
2517 | iptables_restore_cmdlist($cmdlist); |
2518 | ||
dd7a13fd | 2519 | ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist; |
2a052ee3 | 2520 | |
6158271d | 2521 | # test: re-read status and check if everything is up to date |
4bd0a9c4 | 2522 | my $active_chains = iptables_get_chains(); |
81a0bf43 | 2523 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0); |
3fa83edf DM |
2524 | |
2525 | my $errors; | |
2526 | foreach my $chain (sort keys %$ruleset) { | |
2527 | my $stat = $statushash->{$chain}; | |
2528 | if ($stat->{action} ne 'exists') { | |
2529 | warn "unable to update chain '$chain'\n"; | |
2530 | $errors = 1; | |
2531 | } | |
2532 | } | |
b6360c3f | 2533 | |
3fa83edf | 2534 | die "unable to apply firewall changes\n" if $errors; |
b6360c3f DM |
2535 | } |
2536 | ||
490cdead DM |
2537 | sub update_nf_conntrack_max { |
2538 | my ($hostfw_conf) = @_; | |
2539 | ||
2540 | my $max = 65536; # reasonable default | |
2541 | ||
2542 | my $options = $hostfw_conf->{options} || {}; | |
2543 | ||
2544 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
2545 | $max = $options->{nf_conntrack_max}; | |
2546 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
2547 | } | |
2548 | ||
2549 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
2550 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
2551 | ||
2552 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
2553 | ||
2554 | if ($current != $max) { | |
2555 | my $hashsize = int($max/4); | |
2556 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
2557 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
2558 | } | |
2559 | } | |
2560 | ||
c4a2e5ae DM |
2561 | sub remove_pvefw_chains { |
2562 | ||
2563 | my ($chash, $hooks) = iptables_get_chains(); | |
2564 | my $cmdlist = "*filter\n"; | |
2565 | ||
2566 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { | |
2567 | if ($hooks->{$h}) { | |
2568 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
2569 | } | |
2570 | } | |
cbb5d6f3 | 2571 | |
c4a2e5ae DM |
2572 | foreach my $chain (keys %$chash) { |
2573 | $cmdlist .= "-F $chain\n"; | |
2574 | } | |
2575 | ||
2576 | foreach my $chain (keys %$chash) { | |
2577 | $cmdlist .= "-X $chain\n"; | |
2578 | } | |
2579 | $cmdlist .= "COMMIT\n"; | |
2580 | ||
2581 | iptables_restore_cmdlist($cmdlist); | |
2582 | } | |
2583 | ||
6b9f68a2 DM |
2584 | sub update { |
2585 | my ($start, $verbose) = @_; | |
2586 | ||
2587 | my $code = sub { | |
2588 | my $status = read_pvefw_status(); | |
2589 | ||
3f95d14a | 2590 | my ($ruleset, $hostfw_conf, $ipset_ruleset) = compile(); |
490cdead | 2591 | |
6b9f68a2 DM |
2592 | if ($start || $status eq 'active') { |
2593 | ||
2594 | save_pvefw_status('active') if ($status ne 'active'); | |
2595 | ||
34cdedfa | 2596 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose); |
6b9f68a2 DM |
2597 | } else { |
2598 | print "Firewall not active (status = $status)\n" if $verbose; | |
2599 | } | |
2600 | }; | |
2601 | ||
2602 | run_locked($code); | |
2603 | } | |
2604 | ||
2605 | ||
b6360c3f | 2606 | 1; |