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Commit | Line | Data |
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b6360c3f DM |
1 | package PVE::Firewall; |
2 | ||
3 | use warnings; | |
4 | use strict; | |
5 | use Data::Dumper; | |
09d5f68e | 6 | use Digest::SHA; |
c8301d63 | 7 | use PVE::INotify; |
54cd19a8 | 8 | use PVE::JSONSchema qw(get_standard_option); |
c8301d63 | 9 | use PVE::Cluster; |
5f0a912c | 10 | use PVE::ProcFSTools; |
f789653a | 11 | use PVE::Tools; |
6b9f68a2 | 12 | use File::Basename; |
5e1267a5 DM |
13 | use File::Path; |
14 | use IO::File; | |
ecbea048 | 15 | use Net::IP; |
06320eb0 | 16 | use PVE::Tools qw(run_command lock_file); |
30c1ae52 | 17 | use Encode; |
ecbea048 | 18 | |
fca39c2c DM |
19 | my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw"; |
20 | ||
d9fee004 DM |
21 | # dynamically include PVE::QemuServer and PVE::OpenVZ |
22 | # to avoid dependency problems | |
23 | my $have_qemu_server; | |
24 | eval { | |
25 | require PVE::QemuServer; | |
26 | $have_qemu_server = 1; | |
27 | }; | |
28 | ||
29 | my $have_pve_manager; | |
30 | eval { | |
31 | require PVE::OpenVZ; | |
32 | $have_pve_manager = 1; | |
33 | }; | |
34 | ||
5e1267a5 | 35 | use Data::Dumper; |
b6360c3f | 36 | |
c8301d63 DM |
37 | my $nodename = PVE::INotify::nodename(); |
38 | ||
06320eb0 | 39 | my $pve_fw_lock_filename = "/var/lock/pvefw.lck"; |
6b9f68a2 | 40 | my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status"; |
06320eb0 | 41 | |
2d404ffc DM |
42 | my $default_log_level = 'info'; |
43 | ||
44 | my $log_level_hash = { | |
45 | debug => 7, | |
46 | info => 6, | |
47 | notice => 5, | |
48 | warning => 4, | |
49 | err => 3, | |
50 | crit => 2, | |
51 | alert => 1, | |
52 | emerg => 0, | |
53 | }; | |
54 | ||
857f62c8 | 55 | # imported/converted from: /usr/share/shorewall/macro.* |
961b4928 | 56 | my $pve_fw_macros = { |
857f62c8 DM |
57 | 'Amanda' => [ |
58 | { action => 'PARAM', proto => 'udp', dport => '10080' }, | |
59 | { action => 'PARAM', proto => 'tcp', dport => '10080' }, | |
60 | ], | |
61 | 'Auth' => [ | |
62 | { action => 'PARAM', proto => 'tcp', dport => '113' }, | |
63 | ], | |
64 | 'BGP' => [ | |
65 | { action => 'PARAM', proto => 'tcp', dport => '179' }, | |
66 | ], | |
67 | 'BitTorrent' => [ | |
961b4928 | 68 | { action => 'PARAM', proto => 'tcp', dport => '6881:6889' }, |
857f62c8 DM |
69 | { action => 'PARAM', proto => 'udp', dport => '6881' }, |
70 | ], | |
71 | 'BitTorrent32' => [ | |
72 | { action => 'PARAM', proto => 'tcp', dport => '6881:6999' }, | |
73 | { action => 'PARAM', proto => 'udp', dport => '6881' }, | |
74 | ], | |
75 | 'CVS' => [ | |
76 | { action => 'PARAM', proto => 'tcp', dport => '2401' }, | |
77 | ], | |
78 | 'Citrix' => [ | |
79 | { action => 'PARAM', proto => 'tcp', dport => '1494' }, | |
80 | { action => 'PARAM', proto => 'udp', dport => '1604' }, | |
81 | { action => 'PARAM', proto => 'tcp', dport => '2598' }, | |
82 | ], | |
83 | 'DAAP' => [ | |
84 | { action => 'PARAM', proto => 'tcp', dport => '3689' }, | |
85 | { action => 'PARAM', proto => 'udp', dport => '3689' }, | |
86 | ], | |
87 | 'DCC' => [ | |
88 | { action => 'PARAM', proto => 'tcp', dport => '6277' }, | |
89 | ], | |
90 | 'DHCPfwd' => [ | |
91 | { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' }, | |
92 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '67:68', sport => '67:68' }, | |
93 | ], | |
94 | 'DNS' => [ | |
95 | { action => 'PARAM', proto => 'udp', dport => '53' }, | |
96 | { action => 'PARAM', proto => 'tcp', dport => '53' }, | |
97 | ], | |
98 | 'Distcc' => [ | |
99 | { action => 'PARAM', proto => 'tcp', dport => '3632' }, | |
100 | ], | |
101 | 'Edonkey' => [ | |
102 | { action => 'PARAM', proto => 'tcp', dport => '4662' }, | |
103 | { action => 'PARAM', proto => 'udp', dport => '4665' }, | |
961b4928 | 104 | ], |
857f62c8 DM |
105 | 'FTP' => [ |
106 | { action => 'PARAM', proto => 'tcp', dport => '21' }, | |
107 | ], | |
108 | 'Finger' => [ | |
109 | { action => 'PARAM', proto => 'tcp', dport => '79' }, | |
110 | ], | |
111 | 'GNUnet' => [ | |
112 | { action => 'PARAM', proto => 'tcp', dport => '2086' }, | |
113 | { action => 'PARAM', proto => 'udp', dport => '2086' }, | |
114 | { action => 'PARAM', proto => 'tcp', dport => '1080' }, | |
115 | { action => 'PARAM', proto => 'udp', dport => '1080' }, | |
116 | ], | |
117 | 'GRE' => [ | |
118 | { action => 'PARAM', proto => '47' }, | |
119 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' }, | |
120 | ], | |
121 | 'Git' => [ | |
122 | { action => 'PARAM', proto => 'tcp', dport => '9418' }, | |
123 | ], | |
124 | 'Gnutella' => [ | |
125 | { action => 'PARAM', proto => 'tcp', dport => '6346' }, | |
126 | { action => 'PARAM', proto => 'udp', dport => '6346' }, | |
127 | ], | |
128 | 'HKP' => [ | |
129 | { action => 'PARAM', proto => 'tcp', dport => '11371' }, | |
130 | ], | |
131 | 'HTTP' => [ | |
961b4928 DM |
132 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
133 | ], | |
857f62c8 DM |
134 | 'HTTPS' => [ |
135 | { action => 'PARAM', proto => 'tcp', dport => '443' }, | |
136 | ], | |
137 | 'ICPV2' => [ | |
138 | { action => 'PARAM', proto => 'udp', dport => '3130' }, | |
139 | ], | |
140 | 'ICQ' => [ | |
141 | { action => 'PARAM', proto => 'tcp', dport => '5190' }, | |
142 | ], | |
143 | 'IMAP' => [ | |
144 | { action => 'PARAM', proto => 'tcp', dport => '143' }, | |
145 | ], | |
146 | 'IMAPS' => [ | |
147 | { action => 'PARAM', proto => 'tcp', dport => '993' }, | |
148 | ], | |
149 | 'IPIP' => [ | |
150 | { action => 'PARAM', proto => '94' }, | |
151 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '94' }, | |
152 | ], | |
153 | 'IPP' => [ | |
154 | { action => 'PARAM', proto => 'tcp', dport => '631' }, | |
155 | ], | |
156 | 'IPPbrd' => [ | |
157 | { action => 'PARAM', proto => 'udp', dport => '631' }, | |
158 | ], | |
159 | 'IPPserver' => [ | |
160 | { action => 'PARAM', source => 'SOURCE', dest => 'DEST', proto => 'tcp', dport => '631' }, | |
161 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '631' }, | |
162 | ], | |
163 | 'IPsec' => [ | |
164 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, | |
165 | { action => 'PARAM', proto => '50' }, | |
166 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' }, | |
167 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' }, | |
168 | ], | |
169 | 'IPsecah' => [ | |
170 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, | |
171 | { action => 'PARAM', proto => '51' }, | |
172 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' }, | |
173 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '51' }, | |
174 | ], | |
175 | 'IPsecnat' => [ | |
176 | { action => 'PARAM', proto => 'udp', dport => '500' }, | |
177 | { action => 'PARAM', proto => 'udp', dport => '4500' }, | |
178 | { action => 'PARAM', proto => '50' }, | |
179 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500' }, | |
180 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '4500' }, | |
181 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' }, | |
182 | ], | |
183 | 'IRC' => [ | |
184 | { action => 'PARAM', proto => 'tcp', dport => '6667' }, | |
185 | ], | |
186 | 'JabberPlain' => [ | |
187 | { action => 'PARAM', proto => 'tcp', dport => '5222' }, | |
188 | ], | |
189 | 'JabberSecure' => [ | |
190 | { action => 'PARAM', proto => 'tcp', dport => '5223' }, | |
191 | ], | |
192 | 'Jabberd' => [ | |
193 | { action => 'PARAM', proto => 'tcp', dport => '5269' }, | |
194 | ], | |
195 | 'Jetdirect' => [ | |
196 | { action => 'PARAM', proto => 'tcp', dport => '9100' }, | |
197 | ], | |
198 | 'L2TP' => [ | |
199 | { action => 'PARAM', proto => 'udp', dport => '1701' }, | |
200 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1701' }, | |
201 | ], | |
202 | 'LDAP' => [ | |
203 | { action => 'PARAM', proto => 'tcp', dport => '389' }, | |
204 | ], | |
205 | 'LDAPS' => [ | |
206 | { action => 'PARAM', proto => 'tcp', dport => '636' }, | |
207 | ], | |
208 | 'MSNP' => [ | |
209 | { action => 'PARAM', proto => 'tcp', dport => '1863' }, | |
210 | ], | |
211 | 'MSSQL' => [ | |
212 | { action => 'PARAM', proto => 'tcp', dport => '1433' }, | |
213 | ], | |
214 | 'Mail' => [ | |
215 | { action => 'PARAM', proto => 'tcp', dport => '25' }, | |
216 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
217 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
218 | ], | |
219 | 'Munin' => [ | |
220 | { action => 'PARAM', proto => 'tcp', dport => '4949' }, | |
221 | ], | |
222 | 'MySQL' => [ | |
223 | { action => 'PARAM', proto => 'tcp', dport => '3306' }, | |
224 | ], | |
225 | 'NNTP' => [ | |
226 | { action => 'PARAM', proto => 'tcp', dport => '119' }, | |
227 | ], | |
228 | 'NNTPS' => [ | |
229 | { action => 'PARAM', proto => 'tcp', dport => '563' }, | |
230 | ], | |
231 | 'NTP' => [ | |
232 | { action => 'PARAM', proto => 'udp', dport => '123' }, | |
233 | ], | |
234 | 'NTPbi' => [ | |
235 | { action => 'PARAM', proto => 'udp', dport => '123' }, | |
236 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '123' }, | |
237 | ], | |
238 | 'NTPbrd' => [ | |
239 | { action => 'PARAM', proto => 'udp', dport => '123' }, | |
240 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '123' }, | |
241 | ], | |
242 | 'OSPF' => [ | |
243 | { action => 'PARAM', proto => '89' }, | |
244 | ], | |
245 | 'OpenVPN' => [ | |
246 | { action => 'PARAM', proto => 'udp', dport => '1194' }, | |
247 | ], | |
248 | 'PCA' => [ | |
249 | { action => 'PARAM', proto => 'udp', dport => '5632' }, | |
250 | { action => 'PARAM', proto => 'tcp', dport => '5631' }, | |
251 | ], | |
252 | 'POP3' => [ | |
253 | { action => 'PARAM', proto => 'tcp', dport => '110' }, | |
254 | ], | |
255 | 'POP3S' => [ | |
256 | { action => 'PARAM', proto => 'tcp', dport => '995' }, | |
257 | ], | |
258 | 'PPtP' => [ | |
259 | { action => 'PARAM', proto => '47' }, | |
260 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' }, | |
261 | { action => 'PARAM', proto => 'tcp', dport => '1723' }, | |
262 | ], | |
263 | 'Ping' => [ | |
269d4f13 | 264 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
265 | ], |
266 | 'PostgreSQL' => [ | |
267 | { action => 'PARAM', proto => 'tcp', dport => '5432' }, | |
268 | ], | |
269 | 'Printer' => [ | |
270 | { action => 'PARAM', proto => 'tcp', dport => '515' }, | |
271 | ], | |
272 | 'RDP' => [ | |
273 | { action => 'PARAM', proto => 'tcp', dport => '3389' }, | |
274 | ], | |
275 | 'RIPbi' => [ | |
276 | { action => 'PARAM', proto => 'udp', dport => '520' }, | |
277 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '520' }, | |
278 | ], | |
279 | 'RNDC' => [ | |
280 | { action => 'PARAM', proto => 'tcp', dport => '953' }, | |
281 | ], | |
282 | 'Razor' => [ | |
283 | { action => 'ACCEPT', proto => 'tcp', dport => '2703' }, | |
284 | ], | |
285 | 'Rdate' => [ | |
286 | { action => 'PARAM', proto => 'tcp', dport => '37' }, | |
287 | ], | |
288 | 'Rsync' => [ | |
289 | { action => 'PARAM', proto => 'tcp', dport => '873' }, | |
290 | ], | |
291 | 'SANE' => [ | |
292 | { action => 'PARAM', proto => 'tcp', dport => '6566' }, | |
293 | ], | |
294 | 'SMB' => [ | |
295 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, | |
296 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
297 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
298 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
299 | ], | |
300 | 'SMBBI' => [ | |
301 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, | |
302 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
303 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
304 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
305 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '135,445' }, | |
306 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '137:139' }, | |
307 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
308 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'tcp', dport => '135,139,445' }, | |
309 | ], | |
310 | 'SMBswat' => [ | |
311 | { action => 'PARAM', proto => 'tcp', dport => '901' }, | |
312 | ], | |
313 | 'SMTP' => [ | |
314 | { action => 'PARAM', proto => 'tcp', dport => '25' }, | |
315 | ], | |
316 | 'SMTPS' => [ | |
317 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
318 | ], | |
319 | 'SNMP' => [ | |
320 | { action => 'PARAM', proto => 'udp', dport => '161:162' }, | |
321 | { action => 'PARAM', proto => 'tcp', dport => '161' }, | |
322 | ], | |
323 | 'SPAMD' => [ | |
324 | { action => 'PARAM', proto => 'tcp', dport => '783' }, | |
325 | ], | |
326 | 'SSH' => [ | |
327 | { action => 'PARAM', proto => 'tcp', dport => '22' }, | |
328 | ], | |
329 | 'SVN' => [ | |
330 | { action => 'PARAM', proto => 'tcp', dport => '3690' }, | |
331 | ], | |
332 | 'SixXS' => [ | |
333 | { action => 'PARAM', proto => 'tcp', dport => '3874' }, | |
334 | { action => 'PARAM', proto => 'udp', dport => '3740' }, | |
335 | { action => 'PARAM', proto => '41' }, | |
336 | { action => 'PARAM', proto => 'udp', dport => '5072,8374' }, | |
337 | ], | |
338 | 'Squid' => [ | |
339 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, | |
340 | ], | |
341 | 'Submission' => [ | |
342 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
343 | ], | |
344 | 'Syslog' => [ | |
345 | { action => 'PARAM', proto => 'udp', dport => '514' }, | |
346 | { action => 'PARAM', proto => 'tcp', dport => '514' }, | |
347 | ], | |
348 | 'TFTP' => [ | |
349 | { action => 'PARAM', proto => 'udp', dport => '69' }, | |
350 | ], | |
351 | 'Telnet' => [ | |
352 | { action => 'PARAM', proto => 'tcp', dport => '23' }, | |
353 | ], | |
354 | 'Telnets' => [ | |
355 | { action => 'PARAM', proto => 'tcp', dport => '992' }, | |
356 | ], | |
357 | 'Time' => [ | |
358 | { action => 'PARAM', proto => 'tcp', dport => '37' }, | |
359 | ], | |
360 | 'Trcrt' => [ | |
361 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, | |
269d4f13 | 362 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
363 | ], |
364 | 'VNC' => [ | |
365 | { action => 'PARAM', proto => 'tcp', dport => '5900:5909' }, | |
366 | ], | |
367 | 'VNCL' => [ | |
368 | { action => 'PARAM', proto => 'tcp', dport => '5500' }, | |
369 | ], | |
370 | 'Web' => [ | |
371 | { action => 'PARAM', proto => 'tcp', dport => '80' }, | |
961b4928 DM |
372 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
373 | ], | |
857f62c8 DM |
374 | 'Webcache' => [ |
375 | { action => 'PARAM', proto => 'tcp', dport => '8080' }, | |
376 | ], | |
377 | 'Webmin' => [ | |
378 | { action => 'PARAM', proto => 'tcp', dport => '10000' }, | |
379 | ], | |
380 | 'Whois' => [ | |
381 | { action => 'PARAM', proto => 'tcp', dport => '43' }, | |
382 | ], | |
961b4928 DM |
383 | }; |
384 | ||
385 | my $pve_fw_parsed_macros; | |
386 | my $pve_fw_preferred_macro_names = {}; | |
3a616aa0 | 387 | |
d8f2505e DM |
388 | my $pve_std_chains = { |
389 | 'PVEFW-SET-ACCEPT-MARK' => [ | |
390 | "-j MARK --set-mark 1", | |
391 | ], | |
79929d9c DM |
392 | 'PVEFW-DropBroadcast' => [ |
393 | # same as shorewall 'Broadcast' | |
394 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
395 | # we can use this to reduce logging | |
396 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
397 | { action => 'DROP', dsttype => 'MULTICAST' }, | |
398 | { action => 'DROP', dsttype => 'ANYCAST' }, | |
399 | { action => 'DROP', dest => '224.0.0.0/4' }, | |
400 | ], | |
401 | 'PVEFW-reject' => [ | |
402 | # same as shorewall 'reject' | |
403 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
404 | { action => 'DROP', source => '224.0.0.0/4' }, | |
405 | { action => 'DROP', proto => 'icmp' }, | |
406 | "-p tcp -j REJECT --reject-with tcp-reset", | |
407 | "-p udp -j REJECT --reject-with icmp-port-unreachable", | |
408 | "-p icmp -j REJECT --reject-with icmp-host-unreachable", | |
409 | "-j REJECT --reject-with icmp-host-prohibited", | |
410 | ], | |
411 | 'PVEFW-Drop' => [ | |
412 | # same as shorewall 'Drop', which is equal to DROP, | |
413 | # but REJECT/DROP some packages to reduce logging, | |
414 | # and ACCEPT critical ICMP types | |
415 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
416 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
417 | { action => 'PVEFW-DropBroadcast' }, | |
418 | # ACCEPT critical ICMP types | |
419 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
420 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
421 | # Drop packets with INVALID state | |
422 | "-m conntrack --ctstate INVALID -j DROP", | |
423 | # Drop Microsoft SMB noise | |
424 | { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
425 | { action => 'DROP', proto => 'udp', dport => '137:139'}, | |
426 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
427 | { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
428 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
429 | # Drop new/NotSyn traffic so that it doesn't get logged | |
430 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
431 | # Drop DNS replies | |
432 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
433 | ], | |
434 | 'PVEFW-Reject' => [ | |
435 | # same as shorewall 'Reject', which is equal to Reject, | |
436 | # but REJECT/DROP some packages to reduce logging, | |
437 | # and ACCEPT critical ICMP types | |
438 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
439 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
440 | { action => 'PVEFW-DropBroadcast' }, | |
441 | # ACCEPT critical ICMP types | |
442 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
443 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
444 | # Drop packets with INVALID state | |
445 | "-m conntrack --ctstate INVALID -j DROP", | |
446 | # Drop Microsoft SMB noise | |
447 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
448 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, | |
449 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
450 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
451 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
452 | # Drop new/NotSyn traffic so that it doesn't get logged | |
453 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
454 | # Drop DNS replies | |
455 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
456 | ], | |
d86659ef DM |
457 | 'PVEFW-tcpflags' => [ |
458 | # same as shorewall tcpflags action. | |
459 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
460 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags", | |
461 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags", | |
462 | "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags", | |
463 | "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags", | |
464 | "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags", | |
465 | ], | |
bee633ab DM |
466 | 'PVEFW-smurfs' => [ |
467 | # same as shorewall smurfs action | |
468 | # Filter packets for smurfs (packets with a broadcast address as the source). | |
469 | "-s 0.0.0.0/32 -j RETURN", | |
470 | "-m addrtype --src-type BROADCAST -g PVEFW-smurflog", | |
471 | "-s 224.0.0.0/4 -g PVEFW-smurflog", | |
472 | ], | |
d8f2505e DM |
473 | }; |
474 | ||
4b586518 DM |
475 | # iptables -p icmp -h |
476 | my $icmp_type_names = { | |
477 | any => 1, | |
478 | 'echo-reply' => 1, | |
479 | 'destination-unreachable' => 1, | |
480 | 'network-unreachable' => 1, | |
481 | 'host-unreachable' => 1, | |
482 | 'protocol-unreachable' => 1, | |
483 | 'port-unreachable' => 1, | |
484 | 'fragmentation-needed' => 1, | |
485 | 'source-route-failed' => 1, | |
486 | 'network-unknown' => 1, | |
487 | 'host-unknown' => 1, | |
488 | 'network-prohibited' => 1, | |
489 | 'host-prohibited' => 1, | |
490 | 'TOS-network-unreachable' => 1, | |
491 | 'TOS-host-unreachable' => 1, | |
492 | 'communication-prohibited' => 1, | |
493 | 'host-precedence-violation' => 1, | |
494 | 'precedence-cutoff' => 1, | |
495 | 'source-quench' => 1, | |
496 | 'redirect' => 1, | |
497 | 'network-redirect' => 1, | |
498 | 'host-redirect' => 1, | |
499 | 'TOS-network-redirect' => 1, | |
500 | 'TOS-host-redirect' => 1, | |
501 | 'echo-request' => 1, | |
502 | 'router-advertisement' => 1, | |
503 | 'router-solicitation' => 1, | |
504 | 'time-exceeded' => 1, | |
505 | 'ttl-zero-during-transit' => 1, | |
506 | 'ttl-zero-during-reassembly' => 1, | |
507 | 'parameter-problem' => 1, | |
508 | 'ip-header-bad' => 1, | |
509 | 'required-option-missing' => 1, | |
510 | 'timestamp-request' => 1, | |
511 | 'timestamp-reply' => 1, | |
512 | 'address-mask-request' => 1, | |
513 | 'address-mask-reply' => 1, | |
514 | }; | |
515 | ||
54cd19a8 | 516 | sub init_firewall_macros { |
6158271d | 517 | |
961b4928 | 518 | $pve_fw_parsed_macros = {}; |
9aab3127 | 519 | |
961b4928 | 520 | foreach my $k (keys %$pve_fw_macros) { |
e5076eee DM |
521 | my $lc_name = lc($k); |
522 | my $macro = $pve_fw_macros->{$k}; | |
523 | $pve_fw_preferred_macro_names->{$lc_name} = $k; | |
524 | $pve_fw_parsed_macros->{$k} = $macro; | |
961b4928 | 525 | } |
9aab3127 DM |
526 | } |
527 | ||
54cd19a8 DM |
528 | init_firewall_macros(); |
529 | ||
fcba0beb DM |
530 | my $etc_services; |
531 | ||
532 | sub get_etc_services { | |
533 | ||
534 | return $etc_services if $etc_services; | |
535 | ||
536 | my $filename = "/etc/services"; | |
537 | ||
538 | my $fh = IO::File->new($filename, O_RDONLY); | |
539 | if (!$fh) { | |
540 | warn "unable to read '$filename' - $!\n"; | |
541 | return {}; | |
542 | } | |
543 | ||
544 | my $services = {}; | |
545 | ||
546 | while (my $line = <$fh>) { | |
547 | chomp ($line); | |
548 | next if $line =~m/^#/; | |
549 | next if ($line =~m/^\s*$/); | |
550 | ||
551 | if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) { | |
552 | $services->{byid}->{$2}->{name} = $1; | |
35b66e9d | 553 | $services->{byid}->{$2}->{port} = $2; |
fcba0beb DM |
554 | $services->{byid}->{$2}->{$3} = 1; |
555 | $services->{byname}->{$1} = $services->{byid}->{$2}; | |
556 | } | |
557 | } | |
558 | ||
559 | close($fh); | |
560 | ||
6158271d DM |
561 | $etc_services = $services; |
562 | ||
3a616aa0 | 563 | |
fcba0beb DM |
564 | return $etc_services; |
565 | } | |
566 | ||
567 | my $etc_protocols; | |
568 | ||
569 | sub get_etc_protocols { | |
570 | return $etc_protocols if $etc_protocols; | |
571 | ||
572 | my $filename = "/etc/protocols"; | |
573 | ||
574 | my $fh = IO::File->new($filename, O_RDONLY); | |
575 | if (!$fh) { | |
576 | warn "unable to read '$filename' - $!\n"; | |
577 | return {}; | |
578 | } | |
579 | ||
580 | my $protocols = {}; | |
581 | ||
582 | while (my $line = <$fh>) { | |
583 | chomp ($line); | |
584 | next if $line =~m/^#/; | |
585 | next if ($line =~m/^\s*$/); | |
586 | ||
587 | if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) { | |
588 | $protocols->{byid}->{$2}->{name} = $1; | |
589 | $protocols->{byname}->{$1} = $protocols->{byid}->{$2}; | |
590 | } | |
591 | } | |
592 | ||
593 | close($fh); | |
594 | ||
595 | $etc_protocols = $protocols; | |
596 | ||
597 | return $etc_protocols; | |
598 | } | |
599 | ||
ecbea048 DM |
600 | sub parse_address_list { |
601 | my ($str) = @_; | |
602 | ||
d6de1dc2 | 603 | my $nbaor = 0; |
ecbea048 DM |
604 | foreach my $aor (split(/,/, $str)) { |
605 | if (!Net::IP->new($aor)) { | |
606 | my $err = Net::IP::Error(); | |
607 | die "invalid IP address: $err\n"; | |
d6de1dc2 AD |
608 | }else{ |
609 | $nbaor++; | |
ecbea048 DM |
610 | } |
611 | } | |
d6de1dc2 | 612 | return $nbaor; |
ecbea048 | 613 | } |
dddd9413 | 614 | |
fcba0beb DM |
615 | sub parse_port_name_number_or_range { |
616 | my ($str) = @_; | |
617 | ||
618 | my $services = PVE::Firewall::get_etc_services(); | |
4cdbb3b7 | 619 | my $nbports = 0; |
fcba0beb | 620 | foreach my $item (split(/,/, $str)) { |
4cdbb3b7 | 621 | my $portlist = ""; |
35b66e9d | 622 | my $oldpon = undef; |
4b586518 | 623 | $nbports++; |
fcba0beb | 624 | foreach my $pon (split(':', $item, 2)) { |
35b66e9d | 625 | $pon = $services->{byname}->{$pon}->{port} if $services->{byname}->{$pon}->{port}; |
4cdbb3b7 | 626 | if ($pon =~ m/^\d+$/){ |
857f62c8 | 627 | die "invalid port '$pon'\n" if $pon < 0 && $pon > 65535; |
35b66e9d AD |
628 | die "port '$pon' must be bigger than port '$oldpon' \n" if $oldpon && ($pon < $oldpon); |
629 | $oldpon = $pon; | |
4cdbb3b7 AD |
630 | }else{ |
631 | die "invalid port $services->{byname}->{$pon}\n" if !$services->{byname}->{$pon}; | |
632 | } | |
fcba0beb DM |
633 | } |
634 | } | |
635 | ||
4cdbb3b7 | 636 | return ($nbports); |
fcba0beb DM |
637 | } |
638 | ||
54cd19a8 DM |
639 | PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec); |
640 | sub pve_fw_verify_port_spec { | |
641 | my ($portstr) = @_; | |
642 | ||
643 | parse_port_name_number_or_range($portstr); | |
644 | ||
645 | return $portstr; | |
646 | } | |
647 | ||
648 | PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec); | |
649 | sub pve_fw_verify_v4addr_spec { | |
650 | my ($list) = @_; | |
651 | ||
652 | parse_address_list($list); | |
653 | ||
654 | return $list; | |
655 | } | |
656 | ||
657 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
658 | sub pve_fw_verify_protocol_spec { | |
659 | my ($proto) = @_; | |
660 | ||
661 | my $protocols = get_etc_protocols(); | |
662 | ||
663 | die "unknown protocol '$proto'\n" if $proto && | |
664 | !(defined($protocols->{byname}->{$proto}) || | |
665 | defined($protocols->{byid}->{$proto})); | |
666 | ||
667 | return $proto; | |
668 | } | |
669 | ||
670 | ||
d1c53b3e | 671 | # helper function for API |
d1c53b3e | 672 | |
9c7e0858 DM |
673 | my $rule_properties = { |
674 | pos => { | |
675 | description => "Update rule at position <pos>.", | |
676 | type => 'integer', | |
677 | minimum => 0, | |
678 | optional => 1, | |
679 | }, | |
680 | digest => { | |
681 | type => 'string', | |
682 | optional => 1, | |
54cd19a8 DM |
683 | maxLength => 27, |
684 | minLength => 27, | |
9c7e0858 DM |
685 | }, |
686 | type => { | |
687 | type => 'string', | |
688 | optional => 1, | |
689 | enum => ['in', 'out', 'group'], | |
690 | }, | |
691 | action => { | |
692 | type => 'string', | |
693 | optional => 1, | |
54cd19a8 | 694 | enum => ['ACCEPT', 'DROP', 'REJECT'], |
9c7e0858 | 695 | }, |
e5076eee DM |
696 | macro => { |
697 | type => 'string', | |
698 | optional => 1, | |
54cd19a8 | 699 | maxLength => 128, |
e5076eee | 700 | }, |
54cd19a8 | 701 | iface => get_standard_option('pve-iface', { optional => 1 }), |
9c7e0858 | 702 | source => { |
54cd19a8 | 703 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
704 | optional => 1, |
705 | }, | |
706 | dest => { | |
54cd19a8 | 707 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
708 | optional => 1, |
709 | }, | |
710 | proto => { | |
54cd19a8 | 711 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
712 | optional => 1, |
713 | }, | |
714 | enable => { | |
715 | type => 'boolean', | |
716 | optional => 1, | |
717 | }, | |
718 | sport => { | |
54cd19a8 | 719 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
720 | optional => 1, |
721 | }, | |
722 | dport => { | |
54cd19a8 | 723 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
724 | optional => 1, |
725 | }, | |
726 | comment => { | |
727 | type => 'string', | |
728 | optional => 1, | |
729 | }, | |
730 | }; | |
731 | ||
ce36326d DM |
732 | sub cleanup_fw_rule { |
733 | my ($rule, $digest, $pos) = @_; | |
734 | ||
735 | my $r = {}; | |
736 | ||
737 | foreach my $k (keys %$rule) { | |
738 | next if !$rule_properties->{$k}; | |
739 | my $v = $rule->{$k}; | |
740 | next if !defined($v); | |
741 | $r->{$k} = $v; | |
742 | $r->{digest} = $digest; | |
743 | $r->{pos} = $pos; | |
744 | } | |
745 | ||
746 | return $r; | |
747 | } | |
748 | ||
9c7e0858 DM |
749 | sub add_rule_properties { |
750 | my ($properties) = @_; | |
751 | ||
752 | foreach my $k (keys %$rule_properties) { | |
753 | $properties->{$k} = $rule_properties->{$k}; | |
754 | } | |
755 | ||
756 | return $properties; | |
757 | } | |
758 | ||
759 | sub copy_rule_data { | |
760 | my ($rule, $param) = @_; | |
761 | ||
762 | foreach my $k (keys %$rule_properties) { | |
763 | if (defined(my $v = $param->{$k})) { | |
764 | if ($v eq '' || $v eq '-') { | |
765 | delete $rule->{$k}; | |
766 | } else { | |
767 | $rule->{$k} = $v; | |
768 | } | |
769 | } else { | |
770 | delete $rule->{$k}; | |
771 | } | |
772 | } | |
773 | return $rule; | |
774 | } | |
775 | ||
776 | # core functions | |
780bcc0f DM |
777 | my $bridge_firewall_enabled = 0; |
778 | ||
779 | sub enable_bridge_firewall { | |
780 | ||
781 | return if $bridge_firewall_enabled; # only once | |
782 | ||
5f0a912c DM |
783 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
784 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 785 | |
6a8a75db DM |
786 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
787 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
788 | ||
780bcc0f DM |
789 | $bridge_firewall_enabled = 1; |
790 | } | |
791 | ||
8cebfa6f | 792 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 793 | |
3a616aa0 AD |
794 | sub iptables { |
795 | my ($cmd) = @_; | |
796 | ||
797 | run_command("/sbin/iptables $cmd", outfunc => sub {}, errfunc => sub {}); | |
798 | } | |
799 | ||
b16e818e DM |
800 | sub iptables_restore_cmdlist { |
801 | my ($cmdlist) = @_; | |
3a616aa0 | 802 | |
3fa83edf | 803 | run_command("/sbin/iptables-restore -n", input => $cmdlist); |
3a616aa0 AD |
804 | } |
805 | ||
34cdedfa AD |
806 | sub ipset_restore_cmdlist { |
807 | my ($cmdlist) = @_; | |
808 | ||
809 | run_command(" /usr/sbin/ipset restore", input => $cmdlist); | |
810 | } | |
811 | ||
de2a57cd DM |
812 | sub iptables_get_chains { |
813 | ||
814 | my $res = {}; | |
815 | ||
816 | # check what chains we want to track | |
817 | my $is_pvefw_chain = sub { | |
818 | my $name = shift; | |
819 | ||
dec84fcd DM |
820 | return 1 if $name =~ m/^PVEFW-\S+$/; |
821 | ||
de2a57cd | 822 | return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/; |
954f24b1 DM |
823 | |
824 | return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable | |
825 | ||
9e15114a DM |
826 | return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/; |
827 | ||
da6fc60b | 828 | return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/; |
f50656c2 | 829 | return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/; |
de2a57cd DM |
830 | |
831 | return undef; | |
832 | }; | |
833 | ||
834 | my $table = ''; | |
835 | ||
c4a2e5ae DM |
836 | my $hooks = {}; |
837 | ||
de2a57cd DM |
838 | my $parser = sub { |
839 | my $line = shift; | |
840 | ||
841 | return if $line =~ m/^#/; | |
842 | return if $line =~ m/^\s*$/; | |
843 | ||
844 | if ($line =~ m/^\*(\S+)$/) { | |
845 | $table = $1; | |
846 | return; | |
847 | } | |
848 | ||
849 | return if $table ne 'filter'; | |
850 | ||
851 | if ($line =~ m/^:(\S+)\s/) { | |
852 | my $chain = $1; | |
853 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 854 | $res->{$chain} = "unknown"; |
09d5f68e | 855 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 856 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 857 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 858 | $res->{$chain} = $sig; |
c4a2e5ae DM |
859 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) { |
860 | $hooks->{$1} = 1; | |
de2a57cd DM |
861 | } else { |
862 | # simply ignore the rest | |
863 | return; | |
864 | } | |
865 | }; | |
866 | ||
867 | run_command("/sbin/iptables-save", outfunc => $parser); | |
868 | ||
c4a2e5ae | 869 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
870 | } |
871 | ||
3f95d14a DM |
872 | sub ipset_chain_digest { |
873 | my ($rules) = @_; | |
874 | my $digest = Digest::SHA->new('sha1'); | |
875 | foreach my $rule (sort @$rules) { # note: sorted | |
876 | $digest->add($rule); | |
877 | } | |
878 | return $digest->b64digest; | |
879 | } | |
880 | ||
34cdedfa AD |
881 | sub ipset_get_chains { |
882 | ||
883 | my $res = {}; | |
884 | my $chains = {}; | |
885 | ||
886 | my $parser = sub { | |
887 | my $line = shift; | |
888 | ||
889 | return if $line =~ m/^#/; | |
890 | return if $line =~ m/^\s*$/; | |
891 | if ($line =~ m/^(\S+)\s(\S+)\s(\S+)/) { | |
3f95d14a | 892 | push @{$chains->{$2}}, $line; |
34cdedfa AD |
893 | } else { |
894 | # simply ignore the rest | |
895 | return; | |
896 | } | |
897 | }; | |
898 | ||
3f95d14a | 899 | run_command("/usr/sbin/ipset save", outfunc => $parser); |
34cdedfa | 900 | |
3f95d14a DM |
901 | # compute digest for each chain |
902 | foreach my $chain (keys %$chains) { | |
903 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
904 | } |
905 | ||
906 | return $res; | |
907 | } | |
908 | ||
3a616aa0 AD |
909 | sub iptables_chain_exist { |
910 | my ($chain) = @_; | |
911 | ||
912 | eval{ | |
913 | iptables("-n --list $chain"); | |
914 | }; | |
915 | return undef if $@; | |
916 | ||
917 | return 1; | |
918 | } | |
919 | ||
920 | sub iptables_rule_exist { | |
921 | my ($rule) = @_; | |
922 | ||
923 | eval{ | |
924 | iptables("-C $rule"); | |
925 | }; | |
926 | return undef if $@; | |
927 | ||
928 | return 1; | |
929 | } | |
930 | ||
eba0fb64 | 931 | sub ruleset_generate_cmdstr { |
2f906466 | 932 | my ($ruleset, $chain, $rule, $actions, $goto) = @_; |
3a616aa0 | 933 | |
00bb4391 | 934 | return if defined($rule->{enable}) && !$rule->{enable}; |
11bac5c2 | 935 | |
e5076eee DM |
936 | die "unable to emit macro - internal error" if $rule->{macro}; # should not happen |
937 | ||
938 | my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0; | |
939 | my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0; | |
940 | my $nbsource = $rule->{source} ? parse_address_list( $rule->{source}) : 0; | |
941 | my $nbdest = $rule->{dest} ? parse_address_list($rule->{dest}) : 0; | |
942 | ||
41524a58 | 943 | my @cmd = (); |
3a616aa0 | 944 | |
eba0fb64 DM |
945 | push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in}; |
946 | push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
947 | ||
e5076eee | 948 | push @cmd, "-m iprange --src-range" if $nbsource > 1; |
41524a58 | 949 | push @cmd, "-s $rule->{source}" if $rule->{source}; |
e5076eee | 950 | push @cmd, "-m iprange --dst-range" if $nbdest > 1; |
41524a58 | 951 | push @cmd, "-d $rule->{dest}" if $rule->{dest}; |
4b586518 | 952 | |
181390b0 | 953 | if ($rule->{proto}) { |
41524a58 | 954 | push @cmd, "-p $rule->{proto}"; |
e3a1d391 | 955 | |
181390b0 | 956 | my $multiport = 0; |
e5076eee DM |
957 | $multiport++ if $nbdport > 1; |
958 | $multiport++ if $nbsport > 1; | |
e3a1d391 | 959 | |
41524a58 | 960 | push @cmd, "--match multiport" if $multiport; |
4b586518 | 961 | |
181390b0 DM |
962 | die "multiport: option '--sports' cannot be used together with '--dports'\n" |
963 | if ($multiport == 2) && ($rule->{dport} ne $rule->{sport}); | |
964 | ||
965 | if ($rule->{dport}) { | |
966 | if ($rule->{proto} && $rule->{proto} eq 'icmp') { | |
967 | # Note: we use dport to store --icmp-type | |
968 | die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}}); | |
41524a58 | 969 | push @cmd, "-m icmp --icmp-type $rule->{dport}"; |
181390b0 | 970 | } else { |
e5076eee | 971 | if ($nbdport > 1) { |
181390b0 | 972 | if ($multiport == 2) { |
41524a58 | 973 | push @cmd, "--ports $rule->{dport}"; |
181390b0 | 974 | } else { |
41524a58 | 975 | push @cmd, "--dports $rule->{dport}"; |
181390b0 | 976 | } |
e3a1d391 | 977 | } else { |
41524a58 | 978 | push @cmd, "--dport $rule->{dport}"; |
e3a1d391 | 979 | } |
4b586518 DM |
980 | } |
981 | } | |
4b586518 | 982 | |
181390b0 | 983 | if ($rule->{sport}) { |
e5076eee | 984 | if ($nbsport > 1) { |
41524a58 | 985 | push @cmd, "--sports $rule->{sport}" if $multiport != 2; |
181390b0 | 986 | } else { |
41524a58 | 987 | push @cmd, "--sport $rule->{sport}"; |
181390b0 | 988 | } |
4b586518 | 989 | } |
181390b0 DM |
990 | } elsif ($rule->{dport} || $rule->{sport}) { |
991 | warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport}; | |
992 | warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport}; | |
4b586518 DM |
993 | } |
994 | ||
41524a58 | 995 | push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; |
4e6112f9 DM |
996 | |
997 | if (my $action = $rule->{action}) { | |
2f906466 | 998 | $action = $actions->{$action} if defined($actions->{$action}); |
4e6112f9 | 999 | $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK'; |
41524a58 | 1000 | push @cmd, $goto ? "-g $action" : "-j $action"; |
181390b0 | 1001 | } |
3a616aa0 | 1002 | |
eba0fb64 DM |
1003 | return scalar(@cmd) ? join(' ', @cmd) : undef; |
1004 | } | |
1005 | ||
e5076eee DM |
1006 | my $apply_macro = sub { |
1007 | my ($macro_name, $param) = @_; | |
1008 | ||
1009 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
1010 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
1011 | ||
1012 | my $rules = []; | |
1013 | ||
1014 | foreach my $templ (@$macro_rules) { | |
1015 | my $rule = {}; | |
1016 | my $param_used = {}; | |
1017 | foreach my $k (keys %$templ) { | |
1018 | my $v = $templ->{$k}; | |
1019 | if ($v eq 'PARAM') { | |
1020 | $v = $param->{$k}; | |
1021 | $param_used->{$k} = 1; | |
1022 | } elsif ($v eq 'DEST') { | |
1023 | $v = $param->{dest}; | |
1024 | $param_used->{dest} = 1; | |
1025 | } elsif ($v eq 'SOURCE') { | |
1026 | $v = $param->{source}; | |
1027 | $param_used->{source} = 1; | |
1028 | } | |
1029 | ||
1030 | die "missing parameter '$k' in macro '$macro_name'\n" if !defined($v); | |
1031 | $rule->{$k} = $v; | |
1032 | } | |
1033 | foreach my $k (keys %$param) { | |
1034 | next if $k eq 'macro'; | |
1035 | next if !defined($param->{$k}); | |
1036 | next if $param_used->{$k}; | |
1037 | if (defined($rule->{$k})) { | |
1038 | die "parameter '$k' already define in macro (value = '$rule->{$k}')\n" | |
1039 | if $rule->{$k} ne $param->{$k}; | |
1040 | } else { | |
1041 | $rule->{$k} = $param->{$k}; | |
1042 | } | |
1043 | } | |
1044 | push @$rules, $rule; | |
1045 | } | |
1046 | ||
1047 | return $rules; | |
1048 | }; | |
1049 | ||
eba0fb64 DM |
1050 | sub ruleset_generate_rule { |
1051 | my ($ruleset, $chain, $rule, $actions, $goto) = @_; | |
1052 | ||
e5076eee DM |
1053 | my $rules; |
1054 | ||
1055 | if ($rule->{macro}) { | |
1056 | $rules = &$apply_macro($rule->{macro}, $rule); | |
1057 | } else { | |
1058 | $rules = [ $rule ]; | |
1059 | } | |
1060 | ||
1061 | foreach my $tmp (@$rules) { | |
1062 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto)) { | |
1063 | ruleset_addrule($ruleset, $chain, $cmdstr); | |
1064 | } | |
41524a58 | 1065 | } |
3fa83edf | 1066 | } |
0f168d7b | 1067 | |
eba0fb64 DM |
1068 | sub ruleset_generate_rule_insert { |
1069 | my ($ruleset, $chain, $rule, $actions, $goto) = @_; | |
1070 | ||
e5076eee DM |
1071 | die "implement me" if $rule->{macro}; # not implemented, because not needed so far |
1072 | ||
eba0fb64 DM |
1073 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) { |
1074 | ruleset_insertrule($ruleset, $chain, $cmdstr); | |
1075 | } | |
1076 | } | |
3fa83edf DM |
1077 | |
1078 | sub ruleset_create_chain { | |
1079 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1080 | |
d050c724 | 1081 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 1082 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 1083 | |
3fa83edf DM |
1084 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
1085 | ||
1086 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
1087 | } |
1088 | ||
3fa83edf DM |
1089 | sub ruleset_chain_exist { |
1090 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1091 | |
3fa83edf DM |
1092 | return $ruleset->{$chain} ? 1 : undef; |
1093 | } | |
3a616aa0 | 1094 | |
3fa83edf DM |
1095 | sub ruleset_addrule { |
1096 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1097 | |
3fa83edf | 1098 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1099 | |
3fa83edf DM |
1100 | push @{$ruleset->{$chain}}, "-A $chain $rule"; |
1101 | } | |
3a616aa0 | 1102 | |
3fa83edf DM |
1103 | sub ruleset_insertrule { |
1104 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1105 | |
3fa83edf | 1106 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1107 | |
3fa83edf DM |
1108 | unshift @{$ruleset->{$chain}}, "-A $chain $rule"; |
1109 | } | |
3a616aa0 | 1110 | |
782c4cde DM |
1111 | sub get_log_rule_base { |
1112 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
1113 | ||
1114 | die "internal error - no log level" if !defined($loglevel); | |
1115 | ||
1116 | $vmid = 0 if !defined($vmid); | |
1117 | ||
1118 | # Note: we use special format for prefix to pass further | |
1119 | # info to log daemon (VMID, LOGVELEL and CHAIN) | |
1120 | ||
1121 | return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; | |
1122 | } | |
1123 | ||
1124 | sub ruleset_addlog { | |
1125 | my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_; | |
1126 | ||
1127 | return if !defined($loglevel); | |
1128 | ||
1129 | my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel); | |
1130 | ||
1131 | $logrule = "$rule $logrule" if defined($rule); | |
1132 | ||
1133 | ruleset_addrule($ruleset, $chain, $logrule) | |
1134 | } | |
1135 | ||
3fa83edf | 1136 | sub generate_bridge_chains { |
530c005e DM |
1137 | my ($ruleset, $hostfw_conf, $bridge, $routing_table) = @_; |
1138 | ||
1139 | my $options = $hostfw_conf->{options} || {}; | |
1140 | ||
1141 | die "error: detected direct route to bridge '$bridge'\n" | |
1142 | if !$options->{allow_bridge_route} && $routing_table->{$bridge}; | |
2f3d8d76 | 1143 | |
5927497d DM |
1144 | if (!ruleset_chain_exist($ruleset, "$bridge-FW")) { |
1145 | ruleset_create_chain($ruleset, "$bridge-FW"); | |
3cc81077 DM |
1146 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-out -j $bridge-FW"); |
1147 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-in -j $bridge-FW"); | |
3fa83edf | 1148 | } |
3a616aa0 | 1149 | |
3fa83edf DM |
1150 | if (!ruleset_chain_exist($ruleset, "$bridge-OUT")) { |
1151 | ruleset_create_chain($ruleset, "$bridge-OUT"); | |
3cc81077 DM |
1152 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-in -j $bridge-OUT"); |
1153 | ruleset_insertrule($ruleset, "PVEFW-INPUT", "-i $bridge -m physdev --physdev-is-in -j $bridge-OUT"); | |
9fcad984 AD |
1154 | } |
1155 | ||
1156 | if (!ruleset_chain_exist($ruleset, "$bridge-IN")) { | |
1157 | ruleset_create_chain($ruleset, "$bridge-IN"); | |
3cc81077 | 1158 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j $bridge-IN"); |
fdb0bf20 | 1159 | ruleset_addrule($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT"); |
7323008d | 1160 | # accept traffic to unmanaged bridge ports |
3cc81077 | 1161 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j ACCEPT "); |
3fa83edf DM |
1162 | } |
1163 | } | |
3a616aa0 | 1164 | |
ead850e8 | 1165 | sub ruleset_add_chain_policy { |
782c4cde | 1166 | my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
1167 | |
1168 | if ($policy eq 'ACCEPT') { | |
1169 | ||
1170 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' }, | |
1171 | { ACCEPT => $accept_action}); | |
1172 | ||
1173 | } elsif ($policy eq 'DROP') { | |
1174 | ||
1175 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop"); | |
1176 | ||
782c4cde | 1177 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1178 | |
1179 | ruleset_addrule($ruleset, $chain, "-j DROP"); | |
1180 | } elsif ($policy eq 'REJECT') { | |
1181 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject"); | |
1182 | ||
782c4cde | 1183 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1184 | |
1185 | ruleset_addrule($ruleset, $chain, "-g PVEFW-reject"); | |
1186 | } else { | |
1187 | # should not happen | |
1188 | die "internal error: unknown policy '$policy'"; | |
1189 | } | |
1190 | } | |
1191 | ||
9e15114a DM |
1192 | sub ruleset_create_vm_chain { |
1193 | my ($ruleset, $chain, $options, $macaddr, $direction) = @_; | |
3a616aa0 | 1194 | |
9e15114a | 1195 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1196 | my $accept = generate_nfqueue($options); |
3a616aa0 | 1197 | |
bee633ab | 1198 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
9e15114a | 1199 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); |
bee633ab DM |
1200 | } |
1201 | ||
ce15d90b | 1202 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
76a2d1e7 | 1203 | if ($direction eq 'OUT') { |
0f168d7b DM |
1204 | ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK', |
1205 | proto => 'udp', sport => 68, dport => 67 }); | |
76a2d1e7 | 1206 | } else { |
0f168d7b DM |
1207 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT', |
1208 | proto => 'udp', sport => 67, dport => 68 }); | |
76a2d1e7 | 1209 | } |
ce15d90b DM |
1210 | } |
1211 | ||
bee633ab | 1212 | if ($options->{tcpflags}) { |
9e15114a | 1213 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); |
bee633ab DM |
1214 | } |
1215 | ||
9e15114a | 1216 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
b47ecc88 AD |
1217 | if($direction eq 'OUT'){ |
1218 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -g PVEFW-SET-ACCEPT-MARK"); | |
3a616aa0 | 1219 | |
b47ecc88 AD |
1220 | }else{ |
1221 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); | |
1222 | } | |
b21aca2c DM |
1223 | if ($direction eq 'OUT') { |
1224 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
9e15114a | 1225 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP"); |
b21aca2c | 1226 | } |
9e15114a | 1227 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
c29f55c9 | 1228 | } |
b47ecc88 AD |
1229 | |
1230 | ||
9e15114a DM |
1231 | } |
1232 | ||
1233 | sub ruleset_generate_vm_rules { | |
fca39c2c | 1234 | my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_; |
9e15114a DM |
1235 | |
1236 | my $lc_direction = lc($direction); | |
c29f55c9 | 1237 | |
92e976b3 DM |
1238 | foreach my $rule (@$rules) { |
1239 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
ea9e5116 | 1240 | next if !$rule->{enable}; |
92e976b3 DM |
1241 | if ($rule->{type} eq 'group') { |
1242 | my $group_chain = "GROUP-$rule->{action}-$direction"; | |
1243 | if(!ruleset_chain_exist($ruleset, $group_chain)){ | |
fca39c2c | 1244 | generate_group_rules($ruleset, $cluster_conf, $rule->{action}); |
92e976b3 | 1245 | } |
9e15114a | 1246 | ruleset_addrule($ruleset, $chain, "-j $group_chain"); |
b47ecc88 AD |
1247 | if ($direction eq 'OUT'){ |
1248 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN"); | |
1249 | }else{ | |
1250 | my $accept = generate_nfqueue($options); | |
1251 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept"); | |
1252 | } | |
1253 | ||
92e976b3 DM |
1254 | } else { |
1255 | next if $rule->{type} ne $lc_direction; | |
1256 | if ($direction eq 'OUT') { | |
9e15114a | 1257 | ruleset_generate_rule($ruleset, $chain, $rule, |
92e976b3 | 1258 | { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }); |
4e6112f9 | 1259 | } else { |
b47ecc88 AD |
1260 | my $accept = generate_nfqueue($options); |
1261 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject" }); | |
3a616aa0 | 1262 | } |
4e6112f9 | 1263 | } |
3a616aa0 | 1264 | } |
9e15114a DM |
1265 | } |
1266 | ||
b47ecc88 AD |
1267 | sub generate_nfqueue { |
1268 | my ($options) = @_; | |
1269 | ||
1270 | my $action = ""; | |
1271 | if($options->{ips}){ | |
1272 | $action = "NFQUEUE"; | |
1273 | if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
1274 | if(defined($3) && defined($1)) { | |
1275 | $action .= " --queue-balance $1:$3"; | |
1276 | }elsif (defined($1)) { | |
1277 | $action .= " --queue-num $1"; | |
1278 | } | |
1279 | } | |
1280 | $action .= " --queue-bypass"; | |
1281 | }else{ | |
1282 | $action = "ACCEPT"; | |
1283 | } | |
1284 | ||
1285 | return $action; | |
1286 | } | |
1287 | ||
da6fc60b AD |
1288 | sub ruleset_generate_vm_ipsrules { |
1289 | my ($ruleset, $options, $direction, $iface, $bridge) = @_; | |
1290 | ||
1291 | if ($options->{ips} && $direction eq 'IN') { | |
1292 | my $nfqueue = generate_nfqueue($options); | |
1293 | ||
1294 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1295 | ruleset_create_chain($ruleset, "PVEFW-IPS"); | |
1296 | } | |
1297 | ||
1298 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1299 | ruleset_create_chain($ruleset, "$bridge-IPS"); | |
1300 | ruleset_insertrule($ruleset, "PVEFW-IPS", "-o $bridge -m physdev --physdev-is-out -j $bridge-IPS"); | |
1301 | } | |
1302 | ||
1303 | ruleset_addrule($ruleset, "$bridge-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue"); | |
1304 | } | |
1305 | } | |
1306 | ||
9e15114a | 1307 | sub generate_venet_rules_direction { |
fca39c2c | 1308 | my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_; |
9e15114a | 1309 | |
5176619e | 1310 | parse_address_list($ip); # make sure we have a valid $ip list |
9e15114a DM |
1311 | |
1312 | my $lc_direction = lc($direction); | |
1313 | ||
1314 | my $rules = $vmfw_conf->{rules}; | |
1315 | ||
1316 | my $options = $vmfw_conf->{options}; | |
1317 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1318 | ||
1319 | my $chain = "venet0-$vmid-$direction"; | |
1320 | ||
1321 | ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction); | |
1322 | ||
fca39c2c | 1323 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction); |
9e15114a DM |
1324 | |
1325 | # implement policy | |
1326 | my $policy; | |
1327 | ||
1328 | if ($direction eq 'OUT') { | |
1329 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
1330 | } else { | |
1331 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default | |
1332 | } | |
1333 | ||
b47ecc88 AD |
1334 | my $accept = generate_nfqueue($options); |
1335 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1336 | ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action); |
9e15114a | 1337 | |
38485daa | 1338 | # plug into FORWARD, INPUT and OUTPUT chain |
eba0fb64 DM |
1339 | if ($direction eq 'OUT') { |
1340 | ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD", { | |
1341 | action => $chain, | |
1342 | source => $ip, | |
1343 | iface_in => 'venet0'}); | |
38485daa DM |
1344 | |
1345 | ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT", { | |
1346 | action => $chain, | |
1347 | source => $ip, | |
1348 | iface_in => 'venet0'}); | |
eba0fb64 DM |
1349 | } else { |
1350 | ruleset_generate_rule($ruleset, "PVEFW-FORWARD", { | |
1351 | action => $chain, | |
1352 | dest => $ip, | |
1353 | iface_out => 'venet0'}); | |
38485daa DM |
1354 | |
1355 | ruleset_generate_rule($ruleset, "PVEFW-OUTPUT", { | |
1356 | action => $chain, | |
1357 | dest => $ip, | |
1358 | iface_out => 'venet0'}); | |
eba0fb64 | 1359 | } |
9e15114a DM |
1360 | } |
1361 | ||
1362 | sub generate_tap_rules_direction { | |
fca39c2c | 1363 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_; |
9e15114a DM |
1364 | |
1365 | my $lc_direction = lc($direction); | |
1366 | ||
1367 | my $rules = $vmfw_conf->{rules}; | |
1368 | ||
1369 | my $options = $vmfw_conf->{options}; | |
1370 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1371 | ||
1372 | my $tapchain = "$iface-$direction"; | |
1373 | ||
1374 | ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction); | |
1375 | ||
fca39c2c | 1376 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options); |
3a616aa0 | 1377 | |
da6fc60b AD |
1378 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge); |
1379 | ||
ccae0b50 DM |
1380 | # implement policy |
1381 | my $policy; | |
1382 | ||
1383 | if ($direction eq 'OUT') { | |
72f63fde | 1384 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
ccae0b50 | 1385 | } else { |
72f63fde | 1386 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
ccae0b50 DM |
1387 | } |
1388 | ||
b47ecc88 AD |
1389 | my $accept = generate_nfqueue($options); |
1390 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1391 | ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action); |
3a616aa0 | 1392 | |
3fa83edf | 1393 | # plug the tap chain to bridge chain |
3cc81077 DM |
1394 | if ($direction eq 'IN') { |
1395 | ruleset_insertrule($ruleset, "$bridge-IN", | |
1396 | "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain"); | |
1397 | } else { | |
1398 | ruleset_insertrule($ruleset, "$bridge-OUT", | |
1399 | "-m physdev --physdev-in $iface -j $tapchain"); | |
1400 | } | |
3a616aa0 AD |
1401 | } |
1402 | ||
d18c1e2b | 1403 | sub enable_host_firewall { |
fca39c2c | 1404 | my ($ruleset, $hostfw_conf, $cluster_conf) = @_; |
0bd5f137 | 1405 | |
51bae274 | 1406 | # fixme: allow security groups |
0bd5f137 | 1407 | |
92e976b3 DM |
1408 | my $options = $hostfw_conf->{options}; |
1409 | my $rules = $hostfw_conf->{rules}; | |
178a63be | 1410 | |
3fa83edf | 1411 | # host inbound firewall |
dec84fcd DM |
1412 | my $chain = "PVEFW-HOST-IN"; |
1413 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 1414 | |
178a63be DM |
1415 | my $loglevel = get_option_log_level($options, "log_level_in"); |
1416 | ||
4ac863a6 DM |
1417 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
1418 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); | |
1419 | } | |
1420 | ||
fb424a00 DM |
1421 | if ($options->{tcpflags}) { |
1422 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); | |
1423 | } | |
1424 | ||
7fab95bc DM |
1425 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1426 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1427 | ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT"); |
1428 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1429 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1430 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1431 | |
23e888f8 DM |
1432 | # we use RETURN because we need to check also tap rules |
1433 | my $accept_action = 'RETURN'; | |
1434 | ||
92e976b3 DM |
1435 | foreach my $rule (@$rules) { |
1436 | next if $rule->{type} ne 'in'; | |
23e888f8 | 1437 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }); |
0bd5f137 AD |
1438 | } |
1439 | ||
23e888f8 | 1440 | # implement input policy |
72f63fde | 1441 | my $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
782c4cde | 1442 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 1443 | |
3fa83edf | 1444 | # host outbound firewall |
aadd745e | 1445 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
1446 | ruleset_create_chain($ruleset, $chain); |
1447 | ||
178a63be DM |
1448 | $loglevel = get_option_log_level($options, "log_level_out"); |
1449 | ||
7fab95bc DM |
1450 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1451 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1452 | ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT"); |
1453 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1454 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1455 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1456 | |
23e888f8 DM |
1457 | # we use RETURN because we may want to check other thigs later |
1458 | $accept_action = 'RETURN'; | |
1459 | ||
92e976b3 DM |
1460 | foreach my $rule (@$rules) { |
1461 | next if $rule->{type} ne 'out'; | |
23e888f8 | 1462 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }); |
0bd5f137 AD |
1463 | } |
1464 | ||
23e888f8 | 1465 | # implement output policy |
72f63fde | 1466 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
782c4cde | 1467 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
6158271d | 1468 | |
dec84fcd DM |
1469 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT"); |
1470 | ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
1471 | } |
1472 | ||
1473 | sub generate_group_rules { | |
fca39c2c | 1474 | my ($ruleset, $cluster_conf, $group) = @_; |
c6f5cc88 | 1475 | die "no such security group '$group'\n" if !$cluster_conf->{groups}->{$group}; |
9d31b418 | 1476 | |
c6f5cc88 | 1477 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 1478 | |
3fa83edf | 1479 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 1480 | |
3fa83edf | 1481 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1482 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1483 | |
92e976b3 DM |
1484 | foreach my $rule (@$rules) { |
1485 | next if $rule->{type} ne 'in'; | |
b47ecc88 | 1486 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }); |
9d31b418 AD |
1487 | } |
1488 | ||
3fa83edf | 1489 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 1490 | |
3fa83edf | 1491 | ruleset_create_chain($ruleset, $chain); |
4e6112f9 | 1492 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1493 | |
92e976b3 DM |
1494 | foreach my $rule (@$rules) { |
1495 | next if $rule->{type} ne 'out'; | |
1496 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to | |
1497 | # check also other tap rules later | |
1498 | ruleset_generate_rule($ruleset, $chain, $rule, | |
1499 | { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }); | |
9d31b418 | 1500 | } |
9d31b418 AD |
1501 | } |
1502 | ||
51bae274 DM |
1503 | my $MAX_NETS = 32; |
1504 | my $valid_netdev_names = {}; | |
1505 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
1506 | $valid_netdev_names->{"net$i"} = 1; | |
1507 | } | |
5e1267a5 | 1508 | |
51bae274 DM |
1509 | sub parse_fw_rule { |
1510 | my ($line, $need_iface, $allow_groups) = @_; | |
5e1267a5 | 1511 | |
92e976b3 | 1512 | my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport); |
51bae274 | 1513 | |
11bac5c2 | 1514 | # we can add single line comments to the end of the rule |
30c1ae52 | 1515 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; |
11bac5c2 DM |
1516 | |
1517 | # we can disable a rule when prefixed with '|' | |
ea9e5116 DM |
1518 | my $enable = 1; |
1519 | ||
1520 | $enable = 0 if $line =~ s/^\|//; | |
51bae274 DM |
1521 | |
1522 | my @data = split(/\s+/, $line); | |
92e976b3 | 1523 | my $expected_elements = $need_iface ? 8 : 7; |
51bae274 DM |
1524 | |
1525 | die "wrong number of rule elements\n" if scalar(@data) > $expected_elements; | |
1526 | ||
1527 | if ($need_iface) { | |
92e976b3 | 1528 | ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data |
51bae274 | 1529 | } else { |
92e976b3 | 1530 | ($type, $action, $source, $dest, $proto, $dport, $sport) = @data; |
51bae274 DM |
1531 | } |
1532 | ||
92e976b3 | 1533 | die "incomplete rule\n" if ! ($type && $action); |
51bae274 | 1534 | |
961b4928 | 1535 | my $macro; |
961b4928 | 1536 | |
92e976b3 DM |
1537 | $type = lc($type); |
1538 | ||
1539 | if ($type eq 'in' || $type eq 'out') { | |
1540 | if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) { | |
1541 | # OK | |
1542 | } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
e5076eee DM |
1543 | $action = $2; |
1544 | my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)}; | |
1545 | die "unknown macro '$1'\n" if !$preferred_name; | |
1546 | $macro = $preferred_name; | |
92e976b3 DM |
1547 | } else { |
1548 | die "unknown action '$action'\n"; | |
1549 | } | |
1550 | } elsif ($type eq 'group') { | |
1551 | die "wrong number of rule elements\n" if scalar(@data) != 3; | |
1552 | die "groups disabled\n" if !$allow_groups; | |
1553 | ||
1554 | die "invalid characters in group name\n" if $action !~ m/^[A-Za-z0-9_\-]+$/; | |
51bae274 | 1555 | } else { |
92e976b3 | 1556 | die "unknown rule type '$type'\n"; |
51bae274 DM |
1557 | } |
1558 | ||
1559 | if ($need_iface) { | |
1560 | $iface = undef if $iface && $iface eq '-'; | |
51bae274 DM |
1561 | } |
1562 | ||
1563 | $proto = undef if $proto && $proto eq '-'; | |
54cd19a8 | 1564 | pve_fw_verify_protocol_spec($proto) if $proto; |
51bae274 DM |
1565 | |
1566 | $source = undef if $source && $source eq '-'; | |
1567 | $dest = undef if $dest && $dest eq '-'; | |
1568 | ||
1569 | $dport = undef if $dport && $dport eq '-'; | |
1570 | $sport = undef if $sport && $sport eq '-'; | |
1571 | ||
e5076eee DM |
1572 | parse_port_name_number_or_range($dport) if defined($dport); |
1573 | parse_port_name_number_or_range($sport) if defined($sport); | |
1574 | ||
1575 | parse_address_list($source) if $source; | |
1576 | parse_address_list($dest) if $dest; | |
51bae274 | 1577 | |
e5076eee | 1578 | return { |
92e976b3 | 1579 | type => $type, |
ea9e5116 | 1580 | enable => $enable, |
11bac5c2 | 1581 | comment => $comment, |
51bae274 | 1582 | action => $action, |
e5076eee | 1583 | macro => $macro, |
51bae274 DM |
1584 | iface => $iface, |
1585 | source => $source, | |
1586 | dest => $dest, | |
51bae274 DM |
1587 | proto => $proto, |
1588 | dport => $dport, | |
1589 | sport => $sport, | |
51bae274 DM |
1590 | }; |
1591 | } | |
1592 | ||
2d404ffc | 1593 | sub parse_vmfw_option { |
85c6eaed DM |
1594 | my ($line) = @_; |
1595 | ||
1596 | my ($opt, $value); | |
1597 | ||
178a63be DM |
1598 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
1599 | ||
b47ecc88 | 1600 | if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
1601 | $opt = lc($1); |
1602 | $value = int($2); | |
178a63be DM |
1603 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
1604 | $opt = lc($1); | |
1605 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1606 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
1607 | $opt = lc($1); |
1608 | $value = uc($3); | |
b47ecc88 AD |
1609 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
1610 | $opt = lc($1); | |
1611 | $value = $2; | |
9c6b6efd | 1612 | } else { |
85c6eaed DM |
1613 | chomp $line; |
1614 | die "can't parse option '$line'\n" | |
1615 | } | |
1616 | ||
1617 | return ($opt, $value); | |
1618 | } | |
1619 | ||
2d404ffc DM |
1620 | sub parse_hostfw_option { |
1621 | my ($line) = @_; | |
1622 | ||
1623 | my ($opt, $value); | |
1624 | ||
1625 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
1626 | ||
cc10e5d7 | 1627 | if ($line =~ m/^(enable|dhcp|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) { |
2d404ffc DM |
1628 | $opt = lc($1); |
1629 | $value = int($2); | |
178a63be | 1630 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
1631 | $opt = lc($1); |
1632 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1633 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2d404ffc DM |
1634 | $opt = lc($1); |
1635 | $value = uc($3); | |
490cdead DM |
1636 | } elsif ($line =~ m/^(nf_conntrack_max):\s*(\d+)\s*$/i) { |
1637 | $opt = lc($1); | |
1638 | $value = int($2); | |
2d404ffc DM |
1639 | } else { |
1640 | chomp $line; | |
1641 | die "can't parse option '$line'\n" | |
1642 | } | |
1643 | ||
1644 | return ($opt, $value); | |
1645 | } | |
1646 | ||
c6f5cc88 DM |
1647 | sub parse_clusterfw_option { |
1648 | my ($line) = @_; | |
1649 | ||
1650 | my ($opt, $value); | |
1651 | ||
1652 | if ($line =~ m/^(enable):\s*(0|1)\s*$/i) { | |
1653 | $opt = lc($1); | |
1654 | $value = int($2); | |
1655 | } else { | |
1656 | chomp $line; | |
1657 | die "can't parse option '$line'\n" | |
1658 | } | |
1659 | ||
1660 | return ($opt, $value); | |
1661 | } | |
1662 | ||
51bae274 DM |
1663 | sub parse_vm_fw_rules { |
1664 | my ($filename, $fh) = @_; | |
1665 | ||
92e976b3 | 1666 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1667 | |
1668 | my $section; | |
1669 | ||
e7b35711 DM |
1670 | my $digest = Digest::SHA->new('sha1'); |
1671 | ||
5e1267a5 | 1672 | while (defined(my $line = <$fh>)) { |
e7b35711 DM |
1673 | $digest->add($line); |
1674 | ||
5e1267a5 DM |
1675 | next if $line =~ m/^#/; |
1676 | next if $line =~ m/^\s*$/; | |
1677 | ||
961b4928 DM |
1678 | my $linenr = $fh->input_line_number(); |
1679 | my $prefix = "$filename (line $linenr)"; | |
1680 | ||
85c6eaed | 1681 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
5e1267a5 | 1682 | $section = lc($1); |
85c6eaed | 1683 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1684 | next; |
1685 | } | |
51bae274 | 1686 | if (!$section) { |
961b4928 | 1687 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1688 | next; |
1689 | } | |
1690 | ||
85c6eaed DM |
1691 | next if !$res->{$section}; # skip undefined section |
1692 | ||
1693 | if ($section eq 'options') { | |
6158271d | 1694 | eval { |
2d404ffc | 1695 | my ($opt, $value) = parse_vmfw_option($line); |
85c6eaed DM |
1696 | $res->{options}->{$opt} = $value; |
1697 | }; | |
1698 | warn "$prefix: $@" if $@; | |
1699 | next; | |
1700 | } | |
1701 | ||
e5076eee DM |
1702 | my $rule; |
1703 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
51bae274 | 1704 | if (my $err = $@) { |
961b4928 | 1705 | warn "$prefix: $err"; |
5e1267a5 DM |
1706 | next; |
1707 | } | |
1708 | ||
e5076eee | 1709 | push @{$res->{$section}}, $rule; |
51bae274 DM |
1710 | } |
1711 | ||
e7b35711 DM |
1712 | $res->{digest} = $digest->b64digest; |
1713 | ||
51bae274 DM |
1714 | return $res; |
1715 | } | |
1716 | ||
1717 | sub parse_host_fw_rules { | |
1718 | my ($filename, $fh) = @_; | |
1719 | ||
92e976b3 | 1720 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1721 | |
1722 | my $section; | |
1723 | ||
8b27beb9 DM |
1724 | my $digest = Digest::SHA->new('sha1'); |
1725 | ||
51bae274 | 1726 | while (defined(my $line = <$fh>)) { |
8b27beb9 DM |
1727 | $digest->add($line); |
1728 | ||
51bae274 DM |
1729 | next if $line =~ m/^#/; |
1730 | next if $line =~ m/^\s*$/; | |
1731 | ||
961b4928 DM |
1732 | my $linenr = $fh->input_line_number(); |
1733 | my $prefix = "$filename (line $linenr)"; | |
1734 | ||
2d404ffc | 1735 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
51bae274 | 1736 | $section = lc($1); |
2d404ffc | 1737 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1738 | next; |
1739 | } | |
51bae274 | 1740 | if (!$section) { |
961b4928 | 1741 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1742 | next; |
1743 | } | |
1744 | ||
2d404ffc DM |
1745 | next if !$res->{$section}; # skip undefined section |
1746 | ||
1747 | if ($section eq 'options') { | |
1748 | eval { | |
2d404ffc DM |
1749 | my ($opt, $value) = parse_hostfw_option($line); |
1750 | $res->{options}->{$opt} = $value; | |
1751 | }; | |
1752 | warn "$prefix: $@" if $@; | |
1753 | next; | |
1754 | } | |
1755 | ||
e5076eee DM |
1756 | my $rule; |
1757 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
ecbea048 | 1758 | if (my $err = $@) { |
961b4928 | 1759 | warn "$prefix: $err"; |
ecbea048 | 1760 | next; |
ecbea048 | 1761 | } |
e5076eee DM |
1762 | |
1763 | push @{$res->{$section}}, $rule; | |
51bae274 | 1764 | } |
ecbea048 | 1765 | |
8b27beb9 DM |
1766 | $res->{digest} = $digest->b64digest; |
1767 | ||
51bae274 DM |
1768 | return $res; |
1769 | } | |
4cdbb3b7 | 1770 | |
c6f5cc88 | 1771 | sub parse_cluster_fw_rules { |
51bae274 | 1772 | my ($filename, $fh) = @_; |
5e1267a5 | 1773 | |
51bae274 DM |
1774 | my $section; |
1775 | my $group; | |
1776 | ||
c4a2e5ae | 1777 | my $res = { rules => [], options => {}, groups => {}, ipset => {} }; |
6158271d | 1778 | |
d1c53b3e DM |
1779 | my $digest = Digest::SHA->new('sha1'); |
1780 | ||
51bae274 | 1781 | while (defined(my $line = <$fh>)) { |
d1c53b3e DM |
1782 | $digest->add($line); |
1783 | ||
51bae274 DM |
1784 | next if $line =~ m/^#/; |
1785 | next if $line =~ m/^\s*$/; | |
1786 | ||
961b4928 DM |
1787 | my $linenr = $fh->input_line_number(); |
1788 | my $prefix = "$filename (line $linenr)"; | |
1789 | ||
c6f5cc88 DM |
1790 | if ($line =~ m/^\[options\]$/i) { |
1791 | $section = 'options'; | |
1792 | next; | |
1793 | } | |
1794 | ||
92e976b3 | 1795 | if ($line =~ m/^\[group\s+(\S+)\]\s*$/i) { |
c6f5cc88 | 1796 | $section = 'groups'; |
92e976b3 | 1797 | $group = lc($1); |
51bae274 DM |
1798 | next; |
1799 | } | |
34cdedfa | 1800 | |
c6f5cc88 DM |
1801 | if ($line =~ m/^\[rules\]$/i) { |
1802 | $section = 'rules'; | |
1803 | next; | |
1804 | } | |
1805 | ||
34cdedfa AD |
1806 | if ($line =~ m/^\[ipgroup\s+(\S+)\]\s*$/i) { |
1807 | $section = 'ipset'; | |
1808 | $group = lc($1); | |
1809 | $res->{$section}->{$group}->{type} = 'hash:ip family inet hashsize 1024 maxelem 65536 '; | |
34cdedfa AD |
1810 | next; |
1811 | } | |
c6f5cc88 | 1812 | |
34cdedfa AD |
1813 | if ($line =~ m/^\[netgroup\s+(\S+)\]\s*$/i) { |
1814 | $section = 'ipset'; | |
1815 | $group = lc($1); | |
1816 | $res->{$section}->{$group}->{type} = 'hash:net family inet hashsize 1024 maxelem 65536 '; | |
34cdedfa AD |
1817 | next; |
1818 | } | |
1819 | ||
c6f5cc88 | 1820 | if (!$section) { |
961b4928 | 1821 | warn "$prefix: skip line - no section"; |
51bae274 DM |
1822 | next; |
1823 | } | |
1824 | ||
c6f5cc88 DM |
1825 | if ($section eq 'options') { |
1826 | eval { | |
1827 | my ($opt, $value) = parse_clusterfw_option($line); | |
1828 | $res->{options}->{$opt} = $value; | |
1829 | }; | |
1830 | warn "$prefix: $@" if $@; | |
1831 | } elsif ($section eq 'rules') { | |
1832 | my $rule; | |
1833 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
1834 | if (my $err = $@) { | |
1835 | warn "$prefix: $err"; | |
1836 | next; | |
1837 | } | |
1838 | push @{$res->{$section}}, $rule; | |
1839 | } elsif ($section eq 'groups') { | |
34cdedfa AD |
1840 | my $rule; |
1841 | eval { $rule = parse_fw_rule($line, 0, 0); }; | |
1842 | if (my $err = $@) { | |
1843 | warn "$prefix: $err"; | |
1844 | next; | |
1845 | } | |
3f95d14a | 1846 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a DM |
1847 | } elsif ($section eq 'ipset') { |
1848 | chomp $line; | |
34cdedfa AD |
1849 | my $ip; |
1850 | if (!Net::IP->new($line)) { | |
1851 | warn "$prefix: $line is not an valid ip address"; | |
1852 | next; | |
1853 | } | |
1854 | push @{$res->{$section}->{$group}->{ip}}, $line; | |
51bae274 | 1855 | } |
5e1267a5 DM |
1856 | } |
1857 | ||
d1c53b3e DM |
1858 | $res->{digest} = $digest->b64digest; |
1859 | ||
5e1267a5 DM |
1860 | return $res; |
1861 | } | |
1862 | ||
06320eb0 DM |
1863 | sub run_locked { |
1864 | my ($code, @param) = @_; | |
1865 | ||
1866 | my $timeout = 10; | |
1867 | ||
1868 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
1869 | ||
1870 | die $@ if $@; | |
1871 | ||
1872 | return $res; | |
1873 | } | |
1874 | ||
5e1267a5 DM |
1875 | sub read_local_vm_config { |
1876 | ||
1877 | my $openvz = {}; | |
5e1267a5 DM |
1878 | my $qemu = {}; |
1879 | ||
c8301d63 | 1880 | my $vmdata = { openvz => $openvz, qemu => $qemu }; |
5e1267a5 | 1881 | |
c8301d63 DM |
1882 | my $vmlist = PVE::Cluster::get_vmlist(); |
1883 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
1884 | my $ids = $vmlist->{ids}; | |
1885 | ||
1886 | foreach my $vmid (keys %$ids) { | |
1887 | next if !$vmid; # skip VE0 | |
1888 | my $d = $ids->{$vmid}; | |
1889 | next if !$d->{node} || $d->{node} ne $nodename; | |
1890 | next if !$d->{type}; | |
1891 | if ($d->{type} eq 'openvz') { | |
d9fee004 DM |
1892 | if ($have_pve_manager) { |
1893 | my $cfspath = PVE::OpenVZ::cfs_config_path($vmid); | |
1894 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
1895 | $openvz->{$vmid} = $conf; | |
1896 | } | |
c8301d63 DM |
1897 | } |
1898 | } elsif ($d->{type} eq 'qemu') { | |
d9fee004 DM |
1899 | if ($have_qemu_server) { |
1900 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); | |
1901 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
1902 | $qemu->{$vmid} = $conf; | |
1903 | } | |
c8301d63 | 1904 | } |
5e1267a5 DM |
1905 | } |
1906 | } | |
d9fee004 | 1907 | |
5e1267a5 DM |
1908 | return $vmdata; |
1909 | }; | |
1910 | ||
e7b35711 DM |
1911 | sub load_vmfw_conf { |
1912 | my ($vmid) = @_; | |
1913 | ||
1914 | my $vmfw_conf = {}; | |
1915 | ||
1916 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
1917 | if (my $fh = IO::File->new($filename, O_RDONLY)) { | |
1918 | $vmfw_conf = parse_vm_fw_rules($filename, $fh); | |
1919 | } | |
1920 | ||
1921 | return $vmfw_conf; | |
1922 | } | |
1923 | ||
6fc63ffd | 1924 | sub read_vm_firewall_configs { |
5e1267a5 | 1925 | my ($vmdata) = @_; |
6fc63ffd | 1926 | my $vmfw_configs = {}; |
c8301d63 | 1927 | |
5e1267a5 | 1928 | foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) { |
e7b35711 DM |
1929 | my $vmfw_conf = load_vmfw_conf($vmid); |
1930 | next if !$vmfw_conf->{options}; # skip if file does not exists | |
1931 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
5e1267a5 DM |
1932 | } |
1933 | ||
6fc63ffd | 1934 | return $vmfw_configs; |
5e1267a5 DM |
1935 | } |
1936 | ||
2d404ffc DM |
1937 | sub get_option_log_level { |
1938 | my ($options, $k) = @_; | |
1939 | ||
1940 | my $v = $options->{$k}; | |
178a63be | 1941 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
1942 | |
1943 | return undef if $v eq '' || $v eq 'nolog'; | |
1944 | ||
1945 | $v = $log_level_hash->{$v} if defined($log_level_hash->{$v}); | |
1946 | ||
1947 | return $v if ($v >= 0) && ($v <= 7); | |
1948 | ||
1949 | warn "unknown log level ($k = '$v')\n"; | |
1950 | ||
1951 | return undef; | |
1952 | } | |
1953 | ||
d8f2505e | 1954 | sub generate_std_chains { |
2d404ffc DM |
1955 | my ($ruleset, $options) = @_; |
1956 | ||
1957 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); | |
1958 | ||
1959 | # same as shorewall smurflog. | |
782c4cde DM |
1960 | my $chain = 'PVEFW-smurflog'; |
1961 | ||
1962 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
1963 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
2d404ffc DM |
1964 | |
1965 | # same as shorewall logflags action. | |
1966 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde DM |
1967 | $chain = 'PVEFW-logflags'; |
1968 | # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG) | |
1969 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
1970 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
d8f2505e DM |
1971 | |
1972 | foreach my $chain (keys %$pve_std_chains) { | |
1973 | ruleset_create_chain($ruleset, $chain); | |
1974 | foreach my $rule (@{$pve_std_chains->{$chain}}) { | |
1975 | if (ref($rule)) { | |
1976 | ruleset_generate_rule($ruleset, $chain, $rule); | |
1977 | } else { | |
1978 | ruleset_addrule($ruleset, $chain, $rule); | |
1979 | } | |
1980 | } | |
1981 | } | |
1982 | } | |
1983 | ||
34cdedfa AD |
1984 | sub generate_ipset_chains { |
1985 | my ($ipset_ruleset, $options) = @_; | |
1986 | ||
1987 | foreach my $ipset (keys %{$options->{ipset}}) { | |
1988 | generate_ipset($ipset_ruleset, $ipset, $options->{ipset}->{$ipset}); | |
1989 | } | |
1990 | } | |
1991 | ||
1992 | sub generate_ipset { | |
1993 | my ($ipset_ruleset, $name, $options) = @_; | |
1994 | ||
1995 | push @{$ipset_ruleset->{$name}}, "create $name $options->{type}"; | |
1996 | ||
1997 | foreach my $ip (@{$options->{ip}}) { | |
1998 | push @{$ipset_ruleset->{$name}}, "add $name $ip"; | |
1999 | } | |
2000 | } | |
2001 | ||
6b9f68a2 DM |
2002 | sub save_pvefw_status { |
2003 | my ($status) = @_; | |
2004 | ||
2005 | die "unknown status '$status' - internal error" | |
2006 | if $status !~ m/^(stopped|active)$/; | |
2007 | ||
2008 | mkdir dirname($pve_fw_status_filename); | |
2009 | PVE::Tools::file_set_contents($pve_fw_status_filename, $status); | |
2010 | } | |
2011 | ||
2012 | sub read_pvefw_status { | |
2013 | ||
2014 | my $status = 'unknown'; | |
2015 | ||
2016 | return 'stopped' if ! -f $pve_fw_status_filename; | |
2017 | ||
2018 | eval { | |
2019 | $status = PVE::Tools::file_get_contents($pve_fw_status_filename); | |
2020 | }; | |
2021 | warn $@ if $@; | |
2022 | ||
2023 | return $status; | |
2024 | } | |
2025 | ||
530c005e DM |
2026 | # fixme: move to pve-common PVE::ProcFSTools |
2027 | sub read_proc_net_route { | |
2028 | my $filename = "/proc/net/route"; | |
2029 | ||
2030 | my $res = {}; | |
2031 | ||
2032 | my $fh = IO::File->new ($filename, "r"); | |
2033 | return $res if !$fh; | |
2034 | ||
2035 | my $int_to_quad = sub { | |
2036 | return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0); | |
2037 | }; | |
2038 | ||
2039 | while (defined(my $line = <$fh>)) { | |
2040 | next if $line =~/^Iface\s+Destination/; # skip head | |
2041 | my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8]; | |
2042 | push @{$res->{$iface}}, { | |
2043 | dest => &$int_to_quad(hex($dest)), | |
2044 | gateway => &$int_to_quad(hex($gateway)), | |
2045 | mask => &$int_to_quad(hex($mask)), | |
2046 | metric => $metric, | |
2047 | mtu => $mtu, | |
2048 | }; | |
2049 | } | |
2050 | ||
2051 | return $res; | |
2052 | } | |
2053 | ||
fca39c2c | 2054 | sub load_clusterfw_conf { |
530c005e | 2055 | |
fca39c2c DM |
2056 | my $cluster_conf = {}; |
2057 | if (my $fh = IO::File->new($clusterfw_conf_filename, O_RDONLY)) { | |
c6f5cc88 | 2058 | $cluster_conf = parse_cluster_fw_rules($clusterfw_conf_filename, $fh); |
51bae274 | 2059 | } |
5e1267a5 | 2060 | |
fca39c2c | 2061 | return $cluster_conf; |
e5d76bde DM |
2062 | } |
2063 | ||
c6f5cc88 DM |
2064 | my $rules_to_conf = sub { |
2065 | my ($rules, $need_iface) = @_; | |
2066 | ||
2067 | my $raw = ''; | |
2068 | ||
2069 | foreach my $rule (@$rules) { | |
2070 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
2071 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; | |
2072 | $raw .= uc($rule->{type}); | |
2073 | $raw .= " " . $rule->{action}; | |
2074 | $raw .= " " . ($rule->{iface} || '-') if $need_iface; | |
2075 | $raw .= " " . ($rule->{source} || '-'); | |
2076 | $raw .= " " . ($rule->{dest} || '-'); | |
2077 | $raw .= " " . ($rule->{proto} || '-'); | |
2078 | $raw .= " " . ($rule->{dport} || '-'); | |
2079 | $raw .= " " . ($rule->{sport} || '-'); | |
2080 | $raw .= " # " . encode('utf8', $rule->{comment}) | |
2081 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; | |
2082 | $raw .= "\n"; | |
2083 | } else { | |
2084 | die "implement me '$rule->{type}'"; | |
2085 | } | |
2086 | } | |
2087 | ||
2088 | return $raw; | |
2089 | }; | |
2090 | ||
fca39c2c DM |
2091 | sub save_clusterfw_conf { |
2092 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
2093 | |
2094 | my $raw = ''; | |
9c7e0858 | 2095 | |
c6f5cc88 DM |
2096 | my $options = $cluster_conf->{options}; |
2097 | if (scalar(keys %$options)) { | |
2098 | $raw .= "[OPTIONS]\n\n"; | |
2099 | foreach my $opt (keys %$options) { | |
2100 | $raw .= "$opt: $options->{$opt}\n"; | |
9c7e0858 | 2101 | } |
c6f5cc88 DM |
2102 | $raw .= "\n"; |
2103 | } | |
9c7e0858 | 2104 | |
c6f5cc88 DM |
2105 | # fixme: save ipset |
2106 | ||
2107 | my $rules = $cluster_conf->{rules}; | |
2108 | if (scalar(@$rules)) { | |
2109 | $raw .= "[RULES]\n\n"; | |
2110 | $raw .= &$rules_to_conf($rules, 1); | |
2111 | $raw .= "\n"; | |
2112 | } | |
2113 | ||
2114 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
2115 | my $rules = $cluster_conf->{groups}->{$group}; | |
2116 | $raw .= "[group $group]\n\n"; | |
2117 | $raw .= &$rules_to_conf($rules, 0); | |
9c7e0858 DM |
2118 | $raw .= "\n"; |
2119 | } | |
2120 | ||
fca39c2c | 2121 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); |
9c7e0858 DM |
2122 | } |
2123 | ||
8b27beb9 DM |
2124 | sub load_hostfw_conf { |
2125 | ||
2126 | my $hostfw_conf = {}; | |
2127 | my $filename = "/etc/pve/local/host.fw"; | |
2128 | if (my $fh = IO::File->new($filename, O_RDONLY)) { | |
2129 | $hostfw_conf = parse_host_fw_rules($filename, $fh); | |
2130 | } | |
2131 | return $hostfw_conf; | |
2132 | } | |
2133 | ||
e5d76bde DM |
2134 | sub compile { |
2135 | my $vmdata = read_local_vm_config(); | |
2136 | my $vmfw_configs = read_vm_firewall_configs($vmdata); | |
2137 | ||
2138 | my $routing_table = read_proc_net_route(); | |
2139 | ||
fca39c2c | 2140 | my $cluster_conf = load_clusterfw_conf(); |
e5d76bde | 2141 | |
34cdedfa | 2142 | my $ipset_ruleset = {}; |
fca39c2c | 2143 | generate_ipset_chains($ipset_ruleset, $cluster_conf); |
34cdedfa | 2144 | |
3fa83edf DM |
2145 | my $ruleset = {}; |
2146 | ||
dec84fcd DM |
2147 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
2148 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 2149 | |
fadb13dd | 2150 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
3fa83edf | 2151 | |
8b27beb9 DM |
2152 | my $hostfw_conf = load_hostfw_conf(); |
2153 | my $hostfw_options = $hostfw_conf->{options} || {}; | |
fadb13dd | 2154 | |
92e976b3 | 2155 | generate_std_chains($ruleset, $hostfw_options); |
fadb13dd | 2156 | |
6d2ab017 | 2157 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 2158 | |
fca39c2c | 2159 | enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable; |
3fa83edf | 2160 | |
6158271d | 2161 | # generate firewall rules for QEMU VMs |
3fa83edf DM |
2162 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
2163 | my $conf = $vmdata->{qemu}->{$vmid}; | |
6fc63ffd | 2164 | my $vmfw_conf = $vmfw_configs->{$vmid}; |
fa9c4a6f DM |
2165 | next if !$vmfw_conf; |
2166 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
3fa83edf DM |
2167 | |
2168 | foreach my $netid (keys %$conf) { | |
2169 | next if $netid !~ m/^net(\d+)$/; | |
2170 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
2171 | next if !$net; | |
2172 | my $iface = "tap${vmid}i$1"; | |
5e1267a5 | 2173 | |
3fa83edf DM |
2174 | my $bridge = $net->{bridge}; |
2175 | next if !$bridge; # fixme: ? | |
2176 | ||
2177 | $bridge .= "v$net->{tag}" if $net->{tag}; | |
2178 | ||
530c005e | 2179 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
3fa83edf | 2180 | |
c29f55c9 | 2181 | my $macaddr = $net->{macaddr}; |
fca39c2c | 2182 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2183 | $vmfw_conf, $vmid, $bridge, 'IN'); |
fca39c2c | 2184 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2185 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
3fa83edf DM |
2186 | } |
2187 | } | |
c8301d63 DM |
2188 | |
2189 | # generate firewall rules for OpenVZ containers | |
2190 | foreach my $vmid (keys %{$vmdata->{openvz}}) { | |
2191 | my $conf = $vmdata->{openvz}->{$vmid}; | |
2192 | ||
2193 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
2194 | next if !$vmfw_conf; | |
2195 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
2196 | ||
2197 | if ($conf->{ip_address} && $conf->{ip_address}->{value}) { | |
2198 | my $ip = $conf->{ip_address}->{value}; | |
fca39c2c DM |
2199 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN'); |
2200 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT'); | |
c8301d63 DM |
2201 | } |
2202 | ||
2203 | if ($conf->{netif} && $conf->{netif}->{value}) { | |
2204 | my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value}); | |
c8301d63 DM |
2205 | foreach my $netid (keys %$netif) { |
2206 | my $d = $netif->{$netid}; | |
2207 | my $bridge = $d->{bridge}; | |
2208 | if (!$bridge) { | |
2209 | warn "no bridge device for CT $vmid iface '$netid'\n"; | |
2210 | next; # fixme? | |
2211 | } | |
530c005e DM |
2212 | |
2213 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); | |
2214 | ||
12d0f130 | 2215 | my $macaddr = $d->{mac}; |
c8301d63 | 2216 | my $iface = $d->{host_ifname}; |
fca39c2c | 2217 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2218 | $vmfw_conf, $vmid, $bridge, 'IN'); |
fca39c2c | 2219 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2220 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
c8301d63 DM |
2221 | } |
2222 | } | |
2223 | } | |
c0413e35 | 2224 | |
cc10e5d7 | 2225 | if($hostfw_options->{optimize}){ |
da6fc60b | 2226 | |
e9d9a73e | 2227 | my $accept = ruleset_chain_exist($ruleset, "PVEFW-IPS") ? "PVEFW-IPS" : "ACCEPT"; |
da6fc60b | 2228 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
cc10e5d7 AD |
2229 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP"); |
2230 | } | |
2231 | ||
eba0fb64 DM |
2232 | # fixme: what log level should we use here? |
2233 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
2234 | ||
c98c037d DM |
2235 | # fixme: should we really block inter-bridge traffic? |
2236 | ||
2237 | # always allow traffic from containers? | |
2238 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN"); | |
2239 | ||
eba0fb64 DM |
2240 | # disable interbridge routing |
2241 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop"); | |
2242 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop"); | |
782c4cde DM |
2243 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+"); |
2244 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+"); | |
eba0fb64 DM |
2245 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP"); |
2246 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP"); | |
2247 | ||
34cdedfa | 2248 | return wantarray ? ($ruleset, $hostfw_conf, $ipset_ruleset) : $ruleset; |
3fa83edf DM |
2249 | } |
2250 | ||
2251 | sub get_ruleset_status { | |
34cdedfa | 2252 | my ($ruleset, $verbose, $ipset) = @_; |
3fa83edf | 2253 | |
34cdedfa AD |
2254 | my $active_chains = undef; |
2255 | if($ipset){ | |
2256 | $active_chains = ipset_get_chains(); | |
2257 | }else{ | |
2258 | $active_chains = iptables_get_chains(); | |
2259 | } | |
3fa83edf DM |
2260 | |
2261 | my $statushash = {}; | |
2262 | ||
2263 | foreach my $chain (sort keys %$ruleset) { | |
3f95d14a | 2264 | my $sig = ipset_chain_digest($ruleset->{$chain}); |
3fa83edf DM |
2265 | $statushash->{$chain}->{sig} = $sig; |
2266 | ||
2267 | my $oldsig = $active_chains->{$chain}; | |
2268 | if (!defined($oldsig)) { | |
2269 | $statushash->{$chain}->{action} = 'create'; | |
2270 | } else { | |
2271 | if ($oldsig eq $sig) { | |
2272 | $statushash->{$chain}->{action} = 'exists'; | |
2273 | } else { | |
2274 | $statushash->{$chain}->{action} = 'update'; | |
2275 | } | |
2276 | } | |
2277 | print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose; | |
2278 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2279 | print "\t$cmd\n" if $verbose; | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | foreach my $chain (sort keys %$active_chains) { | |
2284 | if (!defined($ruleset->{$chain})) { | |
2285 | my $sig = $active_chains->{$chain}; | |
2286 | $statushash->{$chain}->{action} = 'delete'; | |
2287 | $statushash->{$chain}->{sig} = $sig; | |
2288 | print "delete $chain ($sig)\n" if $verbose; | |
2289 | } | |
6158271d | 2290 | } |
3f95d14a | 2291 | |
3fa83edf DM |
2292 | return $statushash; |
2293 | } | |
2294 | ||
3fa83edf DM |
2295 | sub print_sig_rule { |
2296 | my ($chain, $sig) = @_; | |
2297 | ||
09d5f68e DM |
2298 | # We just use this to store a SHA1 checksum used to detect changes |
2299 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
2300 | } |
2301 | ||
6b9f68a2 | 2302 | sub get_rulset_cmdlist { |
a84f4d96 | 2303 | my ($ruleset, $verbose) = @_; |
3fa83edf | 2304 | |
3fa83edf DM |
2305 | my $cmdlist = "*filter\n"; # we pass this to iptables-restore; |
2306 | ||
2307 | my $statushash = get_ruleset_status($ruleset, $verbose); | |
2308 | ||
2309 | # create missing chains first | |
2310 | foreach my $chain (sort keys %$ruleset) { | |
2311 | my $stat = $statushash->{$chain}; | |
2312 | die "internal error" if !$stat; | |
2313 | next if $stat->{action} ne 'create'; | |
886aba9c | 2314 | |
3fa83edf DM |
2315 | $cmdlist .= ":$chain - [0:0]\n"; |
2316 | } | |
2317 | ||
dec84fcd | 2318 | my $rule = "INPUT -j PVEFW-INPUT"; |
3fa83edf DM |
2319 | if (!PVE::Firewall::iptables_rule_exist($rule)) { |
2320 | $cmdlist .= "-A $rule\n"; | |
2321 | } | |
dec84fcd | 2322 | $rule = "OUTPUT -j PVEFW-OUTPUT"; |
3fa83edf DM |
2323 | if (!PVE::Firewall::iptables_rule_exist($rule)) { |
2324 | $cmdlist .= "-A $rule\n"; | |
2325 | } | |
2326 | ||
dec84fcd | 2327 | $rule = "FORWARD -j PVEFW-FORWARD"; |
3fa83edf DM |
2328 | if (!PVE::Firewall::iptables_rule_exist($rule)) { |
2329 | $cmdlist .= "-A $rule\n"; | |
2330 | } | |
2331 | ||
2332 | foreach my $chain (sort keys %$ruleset) { | |
2333 | my $stat = $statushash->{$chain}; | |
2334 | die "internal error" if !$stat; | |
2335 | ||
2336 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
2337 | $cmdlist .= "-F $chain\n"; | |
2338 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2339 | $cmdlist .= "$cmd\n"; | |
2340 | } | |
2341 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
2342 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 2343 | die "internal error"; # this should not happen |
3fa83edf DM |
2344 | } elsif ($stat->{action} eq 'exists') { |
2345 | # do nothing | |
2346 | } else { | |
2347 | die "internal error - unknown status '$stat->{action}'"; | |
2348 | } | |
2349 | } | |
2350 | ||
f5d28682 DM |
2351 | foreach my $chain (keys %$statushash) { |
2352 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2353 | $cmdlist .= "-F $chain\n"; | |
2354 | } | |
2355 | foreach my $chain (keys %$statushash) { | |
2356 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
2357 | next if $chain eq 'PVEFW-INPUT'; |
2358 | next if $chain eq 'PVEFW-OUTPUT'; | |
2359 | next if $chain eq 'PVEFW-FORWARD'; | |
f5d28682 DM |
2360 | $cmdlist .= "-X $chain\n"; |
2361 | } | |
2362 | ||
3f95d14a DM |
2363 | my $changes = $cmdlist ne "*filter\n" ? 1 : 0; |
2364 | ||
3fa83edf DM |
2365 | $cmdlist .= "COMMIT\n"; |
2366 | ||
3f95d14a | 2367 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
2368 | } |
2369 | ||
34cdedfa AD |
2370 | sub get_ipset_cmdlist { |
2371 | my ($ruleset, $verbose) = @_; | |
2372 | ||
2373 | my $cmdlist = ""; | |
2374 | ||
2375 | my $statushash = get_ruleset_status($ruleset, $verbose, 1); | |
2376 | ||
2377 | foreach my $chain (sort keys %$ruleset) { | |
2378 | my $stat = $statushash->{$chain}; | |
2379 | die "internal error" if !$stat; | |
2380 | ||
2381 | if ($stat->{action} eq 'create') { | |
2382 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2383 | $cmdlist .= "$cmd\n"; | |
2384 | } | |
2385 | } | |
2386 | ||
2387 | if ($stat->{action} eq 'update') { | |
2388 | my $chain_swap = $chain."_swap"; | |
2389 | ||
2390 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2391 | $cmd =~ s/$chain/$chain_swap/; | |
2392 | $cmdlist .= "$cmd\n"; | |
2393 | ||
2394 | } | |
2395 | $cmdlist .= "swap $chain_swap $chain\n"; | |
2396 | $cmdlist .= "flush $chain_swap\n"; | |
2397 | $cmdlist .= "destroy $chain_swap\n"; | |
34cdedfa AD |
2398 | } |
2399 | ||
2400 | } | |
2401 | ||
2402 | foreach my $chain (keys %$statushash) { | |
2403 | next if $statushash->{$chain}->{action} ne 'delete'; | |
3f95d14a | 2404 | |
34cdedfa AD |
2405 | $cmdlist .= "flush $chain\n"; |
2406 | $cmdlist .= "destroy $chain\n"; | |
2407 | } | |
2408 | ||
3f95d14a DM |
2409 | my $changes = $cmdlist ? 1 : 0; |
2410 | ||
2411 | return wantarray ? ($cmdlist, $changes) : $cmdlist; | |
34cdedfa AD |
2412 | } |
2413 | ||
6b9f68a2 | 2414 | sub apply_ruleset { |
34cdedfa | 2415 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_; |
6b9f68a2 DM |
2416 | |
2417 | enable_bridge_firewall(); | |
2418 | ||
edb75ba9 DM |
2419 | update_nf_conntrack_max($hostfw_conf); |
2420 | ||
34cdedfa AD |
2421 | my $ipsetcmdlist = get_ipset_cmdlist($ipset_ruleset, $verbose); |
2422 | ||
6b9f68a2 DM |
2423 | my $cmdlist = get_rulset_cmdlist($ruleset, $verbose); |
2424 | ||
3f95d14a DM |
2425 | print $ipsetcmdlist if $verbose; |
2426 | ||
3fa83edf DM |
2427 | print $cmdlist if $verbose; |
2428 | ||
34cdedfa AD |
2429 | ipset_restore_cmdlist($ipsetcmdlist); |
2430 | ||
3fa83edf DM |
2431 | iptables_restore_cmdlist($cmdlist); |
2432 | ||
6158271d | 2433 | # test: re-read status and check if everything is up to date |
6b9f68a2 | 2434 | my $statushash = get_ruleset_status($ruleset); |
3fa83edf DM |
2435 | |
2436 | my $errors; | |
2437 | foreach my $chain (sort keys %$ruleset) { | |
2438 | my $stat = $statushash->{$chain}; | |
2439 | if ($stat->{action} ne 'exists') { | |
2440 | warn "unable to update chain '$chain'\n"; | |
2441 | $errors = 1; | |
2442 | } | |
2443 | } | |
b6360c3f | 2444 | |
3fa83edf | 2445 | die "unable to apply firewall changes\n" if $errors; |
b6360c3f DM |
2446 | } |
2447 | ||
490cdead DM |
2448 | sub update_nf_conntrack_max { |
2449 | my ($hostfw_conf) = @_; | |
2450 | ||
2451 | my $max = 65536; # reasonable default | |
2452 | ||
2453 | my $options = $hostfw_conf->{options} || {}; | |
2454 | ||
2455 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
2456 | $max = $options->{nf_conntrack_max}; | |
2457 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
2458 | } | |
2459 | ||
2460 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
2461 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
2462 | ||
2463 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
2464 | ||
2465 | if ($current != $max) { | |
2466 | my $hashsize = int($max/4); | |
2467 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
2468 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
2469 | } | |
2470 | } | |
2471 | ||
c4a2e5ae DM |
2472 | sub remove_pvefw_chains { |
2473 | ||
2474 | my ($chash, $hooks) = iptables_get_chains(); | |
2475 | my $cmdlist = "*filter\n"; | |
2476 | ||
2477 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { | |
2478 | if ($hooks->{$h}) { | |
2479 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
2480 | } | |
2481 | } | |
2482 | ||
2483 | foreach my $chain (keys %$chash) { | |
2484 | $cmdlist .= "-F $chain\n"; | |
2485 | } | |
2486 | ||
2487 | foreach my $chain (keys %$chash) { | |
2488 | $cmdlist .= "-X $chain\n"; | |
2489 | } | |
2490 | $cmdlist .= "COMMIT\n"; | |
2491 | ||
2492 | iptables_restore_cmdlist($cmdlist); | |
2493 | } | |
2494 | ||
6b9f68a2 DM |
2495 | sub update { |
2496 | my ($start, $verbose) = @_; | |
2497 | ||
2498 | my $code = sub { | |
2499 | my $status = read_pvefw_status(); | |
2500 | ||
3f95d14a | 2501 | my ($ruleset, $hostfw_conf, $ipset_ruleset) = compile(); |
490cdead | 2502 | |
6b9f68a2 DM |
2503 | if ($start || $status eq 'active') { |
2504 | ||
2505 | save_pvefw_status('active') if ($status ne 'active'); | |
2506 | ||
34cdedfa | 2507 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose); |
6b9f68a2 DM |
2508 | } else { |
2509 | print "Firewall not active (status = $status)\n" if $verbose; | |
2510 | } | |
2511 | }; | |
2512 | ||
2513 | run_locked($code); | |
2514 | } | |
2515 | ||
2516 | ||
b6360c3f | 2517 | 1; |