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Commit | Line | Data |
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b6360c3f DM |
1 | package PVE::Firewall; |
2 | ||
3 | use warnings; | |
4 | use strict; | |
cbb5d6f3 | 5 | use POSIX; |
b6360c3f | 6 | use Data::Dumper; |
09d5f68e | 7 | use Digest::SHA; |
c8301d63 | 8 | use PVE::INotify; |
7ca36671 | 9 | use PVE::Exception qw(raise raise_param_exc); |
54cd19a8 | 10 | use PVE::JSONSchema qw(get_standard_option); |
c8301d63 | 11 | use PVE::Cluster; |
5f0a912c | 12 | use PVE::ProcFSTools; |
f789653a | 13 | use PVE::Tools; |
6b9f68a2 | 14 | use File::Basename; |
5e1267a5 DM |
15 | use File::Path; |
16 | use IO::File; | |
ecbea048 | 17 | use Net::IP; |
06320eb0 | 18 | use PVE::Tools qw(run_command lock_file); |
30c1ae52 | 19 | use Encode; |
ecbea048 | 20 | |
63c91681 | 21 | my $hostfw_conf_filename = "/etc/pve/local/host.fw"; |
fca39c2c DM |
22 | my $clusterfw_conf_filename = "/etc/pve/firewall/cluster.fw"; |
23 | ||
cbb5d6f3 | 24 | # dynamically include PVE::QemuServer and PVE::OpenVZ |
d9fee004 DM |
25 | # to avoid dependency problems |
26 | my $have_qemu_server; | |
27 | eval { | |
28 | require PVE::QemuServer; | |
29 | $have_qemu_server = 1; | |
30 | }; | |
31 | ||
32 | my $have_pve_manager; | |
33 | eval { | |
34 | require PVE::OpenVZ; | |
35 | $have_pve_manager = 1; | |
36 | }; | |
37 | ||
cbb5d6f3 DM |
38 | my $feature_ipset_nomatch = 0; |
39 | eval { | |
40 | my (undef, undef, $release) = POSIX::uname(); | |
41 | if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) { | |
42 | my ($major, $minor) = ($1, $2); | |
43 | $feature_ipset_nomatch = 1 if ($major > 3) || | |
44 | ($major == 3 && $minor >= 7); | |
45 | } | |
46 | ||
47 | }; | |
48 | ||
5e1267a5 | 49 | use Data::Dumper; |
b6360c3f | 50 | |
c8301d63 DM |
51 | my $nodename = PVE::INotify::nodename(); |
52 | ||
06320eb0 | 53 | my $pve_fw_lock_filename = "/var/lock/pvefw.lck"; |
6b9f68a2 | 54 | my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status"; |
06320eb0 | 55 | |
2d404ffc DM |
56 | my $default_log_level = 'info'; |
57 | ||
58 | my $log_level_hash = { | |
59 | debug => 7, | |
60 | info => 6, | |
61 | notice => 5, | |
62 | warning => 4, | |
63 | err => 3, | |
64 | crit => 2, | |
65 | alert => 1, | |
66 | emerg => 0, | |
67 | }; | |
68 | ||
857f62c8 | 69 | # imported/converted from: /usr/share/shorewall/macro.* |
961b4928 | 70 | my $pve_fw_macros = { |
857f62c8 | 71 | 'Amanda' => [ |
ebd54ae9 | 72 | "Amanda Backup", |
857f62c8 DM |
73 | { action => 'PARAM', proto => 'udp', dport => '10080' }, |
74 | { action => 'PARAM', proto => 'tcp', dport => '10080' }, | |
75 | ], | |
76 | 'Auth' => [ | |
ebd54ae9 | 77 | "Auth (identd) traffic", |
857f62c8 DM |
78 | { action => 'PARAM', proto => 'tcp', dport => '113' }, |
79 | ], | |
80 | 'BGP' => [ | |
ebd54ae9 | 81 | "Border Gateway Protocol traffic", |
857f62c8 DM |
82 | { action => 'PARAM', proto => 'tcp', dport => '179' }, |
83 | ], | |
84 | 'BitTorrent' => [ | |
ebd54ae9 | 85 | "BitTorrent traffic for BitTorrent 3.1 and earlier", |
961b4928 | 86 | { action => 'PARAM', proto => 'tcp', dport => '6881:6889' }, |
857f62c8 DM |
87 | { action => 'PARAM', proto => 'udp', dport => '6881' }, |
88 | ], | |
89 | 'BitTorrent32' => [ | |
ebd54ae9 | 90 | "BitTorrent traffic for BitTorrent 3.2 and later", |
857f62c8 DM |
91 | { action => 'PARAM', proto => 'tcp', dport => '6881:6999' }, |
92 | { action => 'PARAM', proto => 'udp', dport => '6881' }, | |
93 | ], | |
94 | 'CVS' => [ | |
ebd54ae9 | 95 | "Concurrent Versions System pserver traffic", |
857f62c8 DM |
96 | { action => 'PARAM', proto => 'tcp', dport => '2401' }, |
97 | ], | |
98 | 'Citrix' => [ | |
ebd54ae9 | 99 | "Citrix/ICA traffic (ICA, ICA Browser, CGP)", |
857f62c8 DM |
100 | { action => 'PARAM', proto => 'tcp', dport => '1494' }, |
101 | { action => 'PARAM', proto => 'udp', dport => '1604' }, | |
102 | { action => 'PARAM', proto => 'tcp', dport => '2598' }, | |
103 | ], | |
104 | 'DAAP' => [ | |
ebd54ae9 | 105 | "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)", |
857f62c8 DM |
106 | { action => 'PARAM', proto => 'tcp', dport => '3689' }, |
107 | { action => 'PARAM', proto => 'udp', dport => '3689' }, | |
108 | ], | |
109 | 'DCC' => [ | |
ebd54ae9 | 110 | "Distributed Checksum Clearinghouse spam filtering mechanism", |
857f62c8 DM |
111 | { action => 'PARAM', proto => 'tcp', dport => '6277' }, |
112 | ], | |
113 | 'DHCPfwd' => [ | |
ebd54ae9 | 114 | "Forwarded DHCP traffic (bidirectional)", |
857f62c8 DM |
115 | { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' }, |
116 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '67:68', sport => '67:68' }, | |
117 | ], | |
118 | 'DNS' => [ | |
ebd54ae9 | 119 | "Domain Name System traffic (upd and tcp)", |
857f62c8 DM |
120 | { action => 'PARAM', proto => 'udp', dport => '53' }, |
121 | { action => 'PARAM', proto => 'tcp', dport => '53' }, | |
122 | ], | |
123 | 'Distcc' => [ | |
ebd54ae9 | 124 | "Distributed Compiler service", |
857f62c8 DM |
125 | { action => 'PARAM', proto => 'tcp', dport => '3632' }, |
126 | ], | |
857f62c8 | 127 | 'FTP' => [ |
ebd54ae9 | 128 | "File Transfer Protocol", |
857f62c8 DM |
129 | { action => 'PARAM', proto => 'tcp', dport => '21' }, |
130 | ], | |
131 | 'Finger' => [ | |
ebd54ae9 | 132 | "Finger protocol (RFC 742)", |
857f62c8 DM |
133 | { action => 'PARAM', proto => 'tcp', dport => '79' }, |
134 | ], | |
135 | 'GNUnet' => [ | |
ebd54ae9 | 136 | "GNUnet secure peer-to-peer networking traffic", |
857f62c8 DM |
137 | { action => 'PARAM', proto => 'tcp', dport => '2086' }, |
138 | { action => 'PARAM', proto => 'udp', dport => '2086' }, | |
139 | { action => 'PARAM', proto => 'tcp', dport => '1080' }, | |
140 | { action => 'PARAM', proto => 'udp', dport => '1080' }, | |
141 | ], | |
142 | 'GRE' => [ | |
ebd54ae9 | 143 | "Generic Routing Encapsulation tunneling protocol (bidirectional)", |
857f62c8 DM |
144 | { action => 'PARAM', proto => '47' }, |
145 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' }, | |
146 | ], | |
147 | 'Git' => [ | |
ebd54ae9 | 148 | "Git distributed revision control traffic", |
857f62c8 DM |
149 | { action => 'PARAM', proto => 'tcp', dport => '9418' }, |
150 | ], | |
857f62c8 | 151 | 'HKP' => [ |
ebd54ae9 | 152 | "OpenPGP HTTP keyserver protocol traffic", |
857f62c8 DM |
153 | { action => 'PARAM', proto => 'tcp', dport => '11371' }, |
154 | ], | |
155 | 'HTTP' => [ | |
ebd54ae9 | 156 | "Hypertext Transfer Protocol (WWW)", |
961b4928 DM |
157 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
158 | ], | |
857f62c8 | 159 | 'HTTPS' => [ |
ebd54ae9 | 160 | "Hypertext Transfer Protocol (WWW) over SSL", |
857f62c8 DM |
161 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
162 | ], | |
163 | 'ICPV2' => [ | |
ebd54ae9 | 164 | "Internet Cache Protocol V2 (Squid) traffic", |
857f62c8 DM |
165 | { action => 'PARAM', proto => 'udp', dport => '3130' }, |
166 | ], | |
167 | 'ICQ' => [ | |
ebd54ae9 | 168 | "AOL Instant Messenger traffic", |
857f62c8 DM |
169 | { action => 'PARAM', proto => 'tcp', dport => '5190' }, |
170 | ], | |
171 | 'IMAP' => [ | |
ebd54ae9 | 172 | "Internet Message Access Protocol", |
857f62c8 DM |
173 | { action => 'PARAM', proto => 'tcp', dport => '143' }, |
174 | ], | |
175 | 'IMAPS' => [ | |
ebd54ae9 | 176 | "Internet Message Access Protocol over SSL", |
857f62c8 DM |
177 | { action => 'PARAM', proto => 'tcp', dport => '993' }, |
178 | ], | |
179 | 'IPIP' => [ | |
ebd54ae9 | 180 | "IPIP capsulation traffic (bidirectional)", |
857f62c8 DM |
181 | { action => 'PARAM', proto => '94' }, |
182 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '94' }, | |
183 | ], | |
857f62c8 | 184 | 'IPsec' => [ |
ebd54ae9 | 185 | "IPsec traffic (bidirectional)", |
857f62c8 DM |
186 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
187 | { action => 'PARAM', proto => '50' }, | |
188 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' }, | |
189 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' }, | |
190 | ], | |
191 | 'IPsecah' => [ | |
ebd54ae9 | 192 | "IPsec authentication (AH) traffic (bidirectional)", |
857f62c8 DM |
193 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
194 | { action => 'PARAM', proto => '51' }, | |
195 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' }, | |
196 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '51' }, | |
197 | ], | |
198 | 'IPsecnat' => [ | |
ebd54ae9 | 199 | "IPsec traffic and Nat-Traversal (bidirectional)", |
857f62c8 DM |
200 | { action => 'PARAM', proto => 'udp', dport => '500' }, |
201 | { action => 'PARAM', proto => 'udp', dport => '4500' }, | |
202 | { action => 'PARAM', proto => '50' }, | |
203 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500' }, | |
204 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '4500' }, | |
205 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' }, | |
206 | ], | |
207 | 'IRC' => [ | |
ebd54ae9 | 208 | "Internet Relay Chat traffic", |
857f62c8 DM |
209 | { action => 'PARAM', proto => 'tcp', dport => '6667' }, |
210 | ], | |
857f62c8 | 211 | 'Jetdirect' => [ |
ebd54ae9 | 212 | "HP Jetdirect printing", |
857f62c8 DM |
213 | { action => 'PARAM', proto => 'tcp', dport => '9100' }, |
214 | ], | |
215 | 'L2TP' => [ | |
ebd54ae9 | 216 | "Layer 2 Tunneling Protocol traffic", |
857f62c8 DM |
217 | { action => 'PARAM', proto => 'udp', dport => '1701' }, |
218 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1701' }, | |
219 | ], | |
220 | 'LDAP' => [ | |
ebd54ae9 | 221 | "Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
222 | { action => 'PARAM', proto => 'tcp', dport => '389' }, |
223 | ], | |
224 | 'LDAPS' => [ | |
ebd54ae9 | 225 | "Secure Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
226 | { action => 'PARAM', proto => 'tcp', dport => '636' }, |
227 | ], | |
228 | 'MSNP' => [ | |
ebd54ae9 | 229 | "Microsoft Notification Protocol", |
857f62c8 DM |
230 | { action => 'PARAM', proto => 'tcp', dport => '1863' }, |
231 | ], | |
232 | 'MSSQL' => [ | |
ebd54ae9 | 233 | "Microsoft SQL Server", |
857f62c8 DM |
234 | { action => 'PARAM', proto => 'tcp', dport => '1433' }, |
235 | ], | |
236 | 'Mail' => [ | |
ebd54ae9 | 237 | "Mail traffic (SMTP, SMTPS, Submission)", |
857f62c8 DM |
238 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
239 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
240 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
241 | ], | |
242 | 'Munin' => [ | |
ebd54ae9 | 243 | "Munin networked resource monitoring traffic", |
857f62c8 DM |
244 | { action => 'PARAM', proto => 'tcp', dport => '4949' }, |
245 | ], | |
246 | 'MySQL' => [ | |
ebd54ae9 | 247 | "MySQL server", |
857f62c8 DM |
248 | { action => 'PARAM', proto => 'tcp', dport => '3306' }, |
249 | ], | |
250 | 'NNTP' => [ | |
ebd54ae9 | 251 | "NNTP traffic (Usenet).", |
857f62c8 DM |
252 | { action => 'PARAM', proto => 'tcp', dport => '119' }, |
253 | ], | |
254 | 'NNTPS' => [ | |
ebd54ae9 | 255 | "Encrypted NNTP traffic (Usenet)", |
857f62c8 DM |
256 | { action => 'PARAM', proto => 'tcp', dport => '563' }, |
257 | ], | |
258 | 'NTP' => [ | |
ebd54ae9 | 259 | "Network Time Protocol (ntpd)", |
857f62c8 DM |
260 | { action => 'PARAM', proto => 'udp', dport => '123' }, |
261 | ], | |
262 | 'NTPbi' => [ | |
ebd54ae9 | 263 | "Bi-directional NTP (for NTP peers)", |
857f62c8 DM |
264 | { action => 'PARAM', proto => 'udp', dport => '123' }, |
265 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '123' }, | |
266 | ], | |
857f62c8 | 267 | 'OSPF' => [ |
ebd54ae9 | 268 | "OSPF multicast traffic", |
857f62c8 DM |
269 | { action => 'PARAM', proto => '89' }, |
270 | ], | |
271 | 'OpenVPN' => [ | |
ebd54ae9 | 272 | "OpenVPN traffic", |
857f62c8 DM |
273 | { action => 'PARAM', proto => 'udp', dport => '1194' }, |
274 | ], | |
275 | 'PCA' => [ | |
ebd54ae9 | 276 | "Symantec PCAnywere (tm)", |
857f62c8 DM |
277 | { action => 'PARAM', proto => 'udp', dport => '5632' }, |
278 | { action => 'PARAM', proto => 'tcp', dport => '5631' }, | |
279 | ], | |
280 | 'POP3' => [ | |
ebd54ae9 | 281 | "POP3 traffic", |
857f62c8 DM |
282 | { action => 'PARAM', proto => 'tcp', dport => '110' }, |
283 | ], | |
284 | 'POP3S' => [ | |
ebd54ae9 | 285 | "Encrypted POP3 traffic", |
857f62c8 DM |
286 | { action => 'PARAM', proto => 'tcp', dport => '995' }, |
287 | ], | |
288 | 'PPtP' => [ | |
ebd54ae9 | 289 | "Point-to-Point Tunneling Protocol", |
857f62c8 DM |
290 | { action => 'PARAM', proto => '47' }, |
291 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' }, | |
292 | { action => 'PARAM', proto => 'tcp', dport => '1723' }, | |
293 | ], | |
294 | 'Ping' => [ | |
ebd54ae9 | 295 | "ICMP echo request", |
269d4f13 | 296 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
297 | ], |
298 | 'PostgreSQL' => [ | |
ebd54ae9 | 299 | "PostgreSQL server", |
857f62c8 DM |
300 | { action => 'PARAM', proto => 'tcp', dport => '5432' }, |
301 | ], | |
302 | 'Printer' => [ | |
ebd54ae9 | 303 | "Line Printer protocol printing", |
857f62c8 DM |
304 | { action => 'PARAM', proto => 'tcp', dport => '515' }, |
305 | ], | |
306 | 'RDP' => [ | |
ebd54ae9 | 307 | "Microsoft Remote Desktop Protocol traffic", |
857f62c8 DM |
308 | { action => 'PARAM', proto => 'tcp', dport => '3389' }, |
309 | ], | |
310 | 'RIPbi' => [ | |
ebd54ae9 | 311 | "Routing Information Protocol (bidirectional)", |
857f62c8 DM |
312 | { action => 'PARAM', proto => 'udp', dport => '520' }, |
313 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '520' }, | |
314 | ], | |
315 | 'RNDC' => [ | |
ebd54ae9 | 316 | "BIND remote management protocol", |
857f62c8 DM |
317 | { action => 'PARAM', proto => 'tcp', dport => '953' }, |
318 | ], | |
319 | 'Razor' => [ | |
ebd54ae9 | 320 | "Razor Antispam System", |
857f62c8 DM |
321 | { action => 'ACCEPT', proto => 'tcp', dport => '2703' }, |
322 | ], | |
323 | 'Rdate' => [ | |
ebd54ae9 | 324 | "Remote time retrieval (rdate)", |
857f62c8 DM |
325 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
326 | ], | |
327 | 'Rsync' => [ | |
ebd54ae9 | 328 | "Rsync server", |
857f62c8 DM |
329 | { action => 'PARAM', proto => 'tcp', dport => '873' }, |
330 | ], | |
331 | 'SANE' => [ | |
ebd54ae9 | 332 | "SANE network scanning", |
857f62c8 DM |
333 | { action => 'PARAM', proto => 'tcp', dport => '6566' }, |
334 | ], | |
335 | 'SMB' => [ | |
ebd54ae9 | 336 | "Microsoft SMB traffic", |
857f62c8 DM |
337 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, |
338 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
339 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
340 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
341 | ], | |
342 | 'SMBBI' => [ | |
ebd54ae9 | 343 | "Microsoft SMB traffic (bidirectional)", |
857f62c8 DM |
344 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, |
345 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
346 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
347 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
348 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '135,445' }, | |
349 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '137:139' }, | |
350 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
351 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'tcp', dport => '135,139,445' }, | |
352 | ], | |
353 | 'SMBswat' => [ | |
ebd54ae9 | 354 | "Samba Web Administration Tool", |
857f62c8 DM |
355 | { action => 'PARAM', proto => 'tcp', dport => '901' }, |
356 | ], | |
357 | 'SMTP' => [ | |
ebd54ae9 | 358 | "Simple Mail Transfer Protocol", |
857f62c8 DM |
359 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
360 | ], | |
361 | 'SMTPS' => [ | |
ebd54ae9 | 362 | "Encrypted Simple Mail Transfer Protocol", |
857f62c8 DM |
363 | { action => 'PARAM', proto => 'tcp', dport => '465' }, |
364 | ], | |
365 | 'SNMP' => [ | |
ebd54ae9 | 366 | "Simple Network Management Protocol", |
857f62c8 DM |
367 | { action => 'PARAM', proto => 'udp', dport => '161:162' }, |
368 | { action => 'PARAM', proto => 'tcp', dport => '161' }, | |
369 | ], | |
370 | 'SPAMD' => [ | |
ebd54ae9 | 371 | "Spam Assassin SPAMD traffic", |
857f62c8 DM |
372 | { action => 'PARAM', proto => 'tcp', dport => '783' }, |
373 | ], | |
374 | 'SSH' => [ | |
ebd54ae9 | 375 | "Secure shell traffic", |
857f62c8 DM |
376 | { action => 'PARAM', proto => 'tcp', dport => '22' }, |
377 | ], | |
378 | 'SVN' => [ | |
ebd54ae9 | 379 | "Subversion server (svnserve)", |
857f62c8 DM |
380 | { action => 'PARAM', proto => 'tcp', dport => '3690' }, |
381 | ], | |
382 | 'SixXS' => [ | |
ebd54ae9 | 383 | "SixXS IPv6 Deployment and Tunnel Broker", |
857f62c8 DM |
384 | { action => 'PARAM', proto => 'tcp', dport => '3874' }, |
385 | { action => 'PARAM', proto => 'udp', dport => '3740' }, | |
386 | { action => 'PARAM', proto => '41' }, | |
387 | { action => 'PARAM', proto => 'udp', dport => '5072,8374' }, | |
388 | ], | |
389 | 'Squid' => [ | |
ebd54ae9 | 390 | "Squid web proxy traffic", |
857f62c8 DM |
391 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, |
392 | ], | |
393 | 'Submission' => [ | |
ebd54ae9 | 394 | "Mail message submission traffic", |
857f62c8 DM |
395 | { action => 'PARAM', proto => 'tcp', dport => '587' }, |
396 | ], | |
397 | 'Syslog' => [ | |
ebd54ae9 | 398 | "Syslog protocol (RFC 5424) traffic", |
857f62c8 DM |
399 | { action => 'PARAM', proto => 'udp', dport => '514' }, |
400 | { action => 'PARAM', proto => 'tcp', dport => '514' }, | |
401 | ], | |
402 | 'TFTP' => [ | |
ebd54ae9 | 403 | "Trivial File Transfer Protocol traffic", |
857f62c8 DM |
404 | { action => 'PARAM', proto => 'udp', dport => '69' }, |
405 | ], | |
406 | 'Telnet' => [ | |
ebd54ae9 | 407 | "Telnet traffic", |
857f62c8 DM |
408 | { action => 'PARAM', proto => 'tcp', dport => '23' }, |
409 | ], | |
410 | 'Telnets' => [ | |
ebd54ae9 | 411 | "Telnet over SSL", |
857f62c8 DM |
412 | { action => 'PARAM', proto => 'tcp', dport => '992' }, |
413 | ], | |
414 | 'Time' => [ | |
ebd54ae9 | 415 | "RFC 868 Time protocol", |
857f62c8 DM |
416 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
417 | ], | |
418 | 'Trcrt' => [ | |
ebd54ae9 | 419 | "Traceroute (for up to 30 hops) traffic", |
857f62c8 | 420 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, |
269d4f13 | 421 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
422 | ], |
423 | 'VNC' => [ | |
ebd54ae9 | 424 | "VNC traffic for VNC display's 0 - 9", |
857f62c8 DM |
425 | { action => 'PARAM', proto => 'tcp', dport => '5900:5909' }, |
426 | ], | |
427 | 'VNCL' => [ | |
ebd54ae9 | 428 | "VNC traffic from Vncservers to Vncviewers in listen mode", |
857f62c8 DM |
429 | { action => 'PARAM', proto => 'tcp', dport => '5500' }, |
430 | ], | |
431 | 'Web' => [ | |
ebd54ae9 | 432 | "WWW traffic (HTTP and HTTPS)", |
857f62c8 | 433 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
961b4928 DM |
434 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
435 | ], | |
857f62c8 | 436 | 'Webcache' => [ |
ebd54ae9 | 437 | "Web Cache/Proxy traffic (port 8080)", |
857f62c8 DM |
438 | { action => 'PARAM', proto => 'tcp', dport => '8080' }, |
439 | ], | |
440 | 'Webmin' => [ | |
ebd54ae9 | 441 | "Webmin traffic", |
857f62c8 DM |
442 | { action => 'PARAM', proto => 'tcp', dport => '10000' }, |
443 | ], | |
444 | 'Whois' => [ | |
ebd54ae9 | 445 | "Whois (nicname, RFC 3912) traffic", |
857f62c8 DM |
446 | { action => 'PARAM', proto => 'tcp', dport => '43' }, |
447 | ], | |
961b4928 DM |
448 | }; |
449 | ||
450 | my $pve_fw_parsed_macros; | |
ebd54ae9 | 451 | my $pve_fw_macro_descr; |
961b4928 | 452 | my $pve_fw_preferred_macro_names = {}; |
3a616aa0 | 453 | |
d8f2505e DM |
454 | my $pve_std_chains = { |
455 | 'PVEFW-SET-ACCEPT-MARK' => [ | |
456 | "-j MARK --set-mark 1", | |
457 | ], | |
79929d9c DM |
458 | 'PVEFW-DropBroadcast' => [ |
459 | # same as shorewall 'Broadcast' | |
460 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
461 | # we can use this to reduce logging | |
462 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
463 | { action => 'DROP', dsttype => 'MULTICAST' }, | |
464 | { action => 'DROP', dsttype => 'ANYCAST' }, | |
cbb5d6f3 | 465 | { action => 'DROP', dest => '224.0.0.0/4' }, |
79929d9c DM |
466 | ], |
467 | 'PVEFW-reject' => [ | |
468 | # same as shorewall 'reject' | |
469 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
cbb5d6f3 | 470 | { action => 'DROP', source => '224.0.0.0/4' }, |
79929d9c DM |
471 | { action => 'DROP', proto => 'icmp' }, |
472 | "-p tcp -j REJECT --reject-with tcp-reset", | |
473 | "-p udp -j REJECT --reject-with icmp-port-unreachable", | |
474 | "-p icmp -j REJECT --reject-with icmp-host-unreachable", | |
475 | "-j REJECT --reject-with icmp-host-prohibited", | |
476 | ], | |
477 | 'PVEFW-Drop' => [ | |
cbb5d6f3 | 478 | # same as shorewall 'Drop', which is equal to DROP, |
79929d9c DM |
479 | # but REJECT/DROP some packages to reduce logging, |
480 | # and ACCEPT critical ICMP types | |
481 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
482 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
483 | { action => 'PVEFW-DropBroadcast' }, | |
484 | # ACCEPT critical ICMP types | |
485 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
486 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
487 | # Drop packets with INVALID state | |
488 | "-m conntrack --ctstate INVALID -j DROP", | |
489 | # Drop Microsoft SMB noise | |
490 | { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
491 | { action => 'DROP', proto => 'udp', dport => '137:139'}, | |
492 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
493 | { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
494 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
495 | # Drop new/NotSyn traffic so that it doesn't get logged | |
496 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
497 | # Drop DNS replies | |
498 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
499 | ], | |
500 | 'PVEFW-Reject' => [ | |
cbb5d6f3 | 501 | # same as shorewall 'Reject', which is equal to Reject, |
79929d9c DM |
502 | # but REJECT/DROP some packages to reduce logging, |
503 | # and ACCEPT critical ICMP types | |
504 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
505 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
506 | { action => 'PVEFW-DropBroadcast' }, | |
507 | # ACCEPT critical ICMP types | |
508 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
509 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
510 | # Drop packets with INVALID state | |
511 | "-m conntrack --ctstate INVALID -j DROP", | |
512 | # Drop Microsoft SMB noise | |
513 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
514 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, | |
515 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
516 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
517 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
518 | # Drop new/NotSyn traffic so that it doesn't get logged | |
519 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
520 | # Drop DNS replies | |
521 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
522 | ], | |
d86659ef DM |
523 | 'PVEFW-tcpflags' => [ |
524 | # same as shorewall tcpflags action. | |
525 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
526 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags", | |
527 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags", | |
528 | "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags", | |
529 | "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags", | |
530 | "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags", | |
531 | ], | |
bee633ab DM |
532 | 'PVEFW-smurfs' => [ |
533 | # same as shorewall smurfs action | |
534 | # Filter packets for smurfs (packets with a broadcast address as the source). | |
535 | "-s 0.0.0.0/32 -j RETURN", | |
536 | "-m addrtype --src-type BROADCAST -g PVEFW-smurflog", | |
537 | "-s 224.0.0.0/4 -g PVEFW-smurflog", | |
538 | ], | |
d8f2505e DM |
539 | }; |
540 | ||
4b586518 DM |
541 | # iptables -p icmp -h |
542 | my $icmp_type_names = { | |
543 | any => 1, | |
544 | 'echo-reply' => 1, | |
545 | 'destination-unreachable' => 1, | |
546 | 'network-unreachable' => 1, | |
547 | 'host-unreachable' => 1, | |
548 | 'protocol-unreachable' => 1, | |
549 | 'port-unreachable' => 1, | |
550 | 'fragmentation-needed' => 1, | |
551 | 'source-route-failed' => 1, | |
552 | 'network-unknown' => 1, | |
553 | 'host-unknown' => 1, | |
554 | 'network-prohibited' => 1, | |
555 | 'host-prohibited' => 1, | |
556 | 'TOS-network-unreachable' => 1, | |
557 | 'TOS-host-unreachable' => 1, | |
558 | 'communication-prohibited' => 1, | |
559 | 'host-precedence-violation' => 1, | |
560 | 'precedence-cutoff' => 1, | |
561 | 'source-quench' => 1, | |
562 | 'redirect' => 1, | |
563 | 'network-redirect' => 1, | |
564 | 'host-redirect' => 1, | |
565 | 'TOS-network-redirect' => 1, | |
566 | 'TOS-host-redirect' => 1, | |
567 | 'echo-request' => 1, | |
568 | 'router-advertisement' => 1, | |
569 | 'router-solicitation' => 1, | |
570 | 'time-exceeded' => 1, | |
571 | 'ttl-zero-during-transit' => 1, | |
572 | 'ttl-zero-during-reassembly' => 1, | |
573 | 'parameter-problem' => 1, | |
574 | 'ip-header-bad' => 1, | |
575 | 'required-option-missing' => 1, | |
576 | 'timestamp-request' => 1, | |
577 | 'timestamp-reply' => 1, | |
578 | 'address-mask-request' => 1, | |
579 | 'address-mask-reply' => 1, | |
580 | }; | |
581 | ||
54cd19a8 | 582 | sub init_firewall_macros { |
6158271d | 583 | |
961b4928 | 584 | $pve_fw_parsed_macros = {}; |
9aab3127 | 585 | |
961b4928 | 586 | foreach my $k (keys %$pve_fw_macros) { |
e5076eee DM |
587 | my $lc_name = lc($k); |
588 | my $macro = $pve_fw_macros->{$k}; | |
ebd54ae9 DM |
589 | if (!ref($macro->[0])) { |
590 | $pve_fw_macro_descr->{$k} = shift @$macro; | |
591 | } | |
e5076eee DM |
592 | $pve_fw_preferred_macro_names->{$lc_name} = $k; |
593 | $pve_fw_parsed_macros->{$k} = $macro; | |
961b4928 | 594 | } |
9aab3127 DM |
595 | } |
596 | ||
54cd19a8 DM |
597 | init_firewall_macros(); |
598 | ||
ebd54ae9 DM |
599 | sub get_macros { |
600 | return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros; | |
601 | } | |
602 | ||
fcba0beb DM |
603 | my $etc_services; |
604 | ||
605 | sub get_etc_services { | |
606 | ||
607 | return $etc_services if $etc_services; | |
608 | ||
609 | my $filename = "/etc/services"; | |
610 | ||
611 | my $fh = IO::File->new($filename, O_RDONLY); | |
612 | if (!$fh) { | |
613 | warn "unable to read '$filename' - $!\n"; | |
614 | return {}; | |
615 | } | |
616 | ||
617 | my $services = {}; | |
618 | ||
619 | while (my $line = <$fh>) { | |
620 | chomp ($line); | |
621 | next if $line =~m/^#/; | |
622 | next if ($line =~m/^\s*$/); | |
623 | ||
624 | if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) { | |
625 | $services->{byid}->{$2}->{name} = $1; | |
35b66e9d | 626 | $services->{byid}->{$2}->{port} = $2; |
fcba0beb DM |
627 | $services->{byid}->{$2}->{$3} = 1; |
628 | $services->{byname}->{$1} = $services->{byid}->{$2}; | |
629 | } | |
630 | } | |
631 | ||
632 | close($fh); | |
633 | ||
6158271d DM |
634 | $etc_services = $services; |
635 | ||
3a616aa0 | 636 | |
fcba0beb DM |
637 | return $etc_services; |
638 | } | |
639 | ||
640 | my $etc_protocols; | |
641 | ||
642 | sub get_etc_protocols { | |
643 | return $etc_protocols if $etc_protocols; | |
644 | ||
645 | my $filename = "/etc/protocols"; | |
646 | ||
647 | my $fh = IO::File->new($filename, O_RDONLY); | |
648 | if (!$fh) { | |
649 | warn "unable to read '$filename' - $!\n"; | |
650 | return {}; | |
651 | } | |
652 | ||
653 | my $protocols = {}; | |
654 | ||
655 | while (my $line = <$fh>) { | |
656 | chomp ($line); | |
657 | next if $line =~m/^#/; | |
658 | next if ($line =~m/^\s*$/); | |
659 | ||
660 | if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) { | |
661 | $protocols->{byid}->{$2}->{name} = $1; | |
662 | $protocols->{byname}->{$1} = $protocols->{byid}->{$2}; | |
663 | } | |
664 | } | |
665 | ||
666 | close($fh); | |
667 | ||
668 | $etc_protocols = $protocols; | |
669 | ||
670 | return $etc_protocols; | |
671 | } | |
672 | ||
ecbea048 DM |
673 | sub parse_address_list { |
674 | my ($str) = @_; | |
675 | ||
d72beb8e DM |
676 | return if $str !~ m/^(\+)(\S+)$/; # ipset ref |
677 | ||
3162af6b DM |
678 | my $count = 0; |
679 | my $iprange = 0; | |
680 | foreach my $elem (split(/,/, $str)) { | |
681 | $count++; | |
682 | if (!Net::IP->new($elem)) { | |
ecbea048 DM |
683 | my $err = Net::IP::Error(); |
684 | die "invalid IP address: $err\n"; | |
685 | } | |
3162af6b | 686 | $iprange = 1 if $elem =~ m/-/; |
ecbea048 | 687 | } |
3162af6b DM |
688 | |
689 | die "you can use a range in a list\n" if $iprange && $count > 1; | |
ecbea048 | 690 | } |
dddd9413 | 691 | |
fcba0beb DM |
692 | sub parse_port_name_number_or_range { |
693 | my ($str) = @_; | |
694 | ||
695 | my $services = PVE::Firewall::get_etc_services(); | |
7ca36671 | 696 | my $count = 0; |
041b7e8e DM |
697 | my $icmp_port = 0; |
698 | ||
fcba0beb | 699 | foreach my $item (split(/,/, $str)) { |
7ca36671 DM |
700 | $count++; |
701 | if ($item =~ m/^(\d+):(\d+)$/) { | |
702 | my ($port1, $port2) = ($1, $2); | |
703 | die "invalid port '$port1'\n" if $port1 > 65535; | |
704 | die "invalid port '$port2'\n" if $port2 > 65535; | |
705 | } elsif ($item =~ m/^(\d+)$/) { | |
706 | my $port = $1; | |
707 | die "invalid port '$port'\n" if $port > 65535; | |
708 | } else { | |
041b7e8e DM |
709 | if ($icmp_type_names->{$item}) { |
710 | $icmp_port = 1; | |
711 | } else { | |
712 | die "invalid port '$item'\n" if !$services->{byname}->{$item}; | |
713 | } | |
fcba0beb DM |
714 | } |
715 | } | |
716 | ||
041b7e8e DM |
717 | die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1; |
718 | ||
7ca36671 | 719 | return $count; |
fcba0beb DM |
720 | } |
721 | ||
54cd19a8 DM |
722 | PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec); |
723 | sub pve_fw_verify_port_spec { | |
724 | my ($portstr) = @_; | |
725 | ||
7ca36671 | 726 | parse_port_name_number_or_range($portstr); |
54cd19a8 DM |
727 | |
728 | return $portstr; | |
729 | } | |
730 | ||
731 | PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec); | |
732 | sub pve_fw_verify_v4addr_spec { | |
733 | my ($list) = @_; | |
734 | ||
735 | parse_address_list($list); | |
736 | ||
737 | return $list; | |
738 | } | |
739 | ||
740 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
741 | sub pve_fw_verify_protocol_spec { | |
742 | my ($proto) = @_; | |
743 | ||
744 | my $protocols = get_etc_protocols(); | |
745 | ||
746 | die "unknown protocol '$proto'\n" if $proto && | |
747 | !(defined($protocols->{byname}->{$proto}) || | |
748 | defined($protocols->{byid}->{$proto})); | |
749 | ||
750 | return $proto; | |
751 | } | |
752 | ||
753 | ||
d1c53b3e | 754 | # helper function for API |
d1c53b3e | 755 | |
9c7e0858 DM |
756 | my $rule_properties = { |
757 | pos => { | |
758 | description => "Update rule at position <pos>.", | |
759 | type => 'integer', | |
760 | minimum => 0, | |
761 | optional => 1, | |
762 | }, | |
763 | digest => { | |
764 | type => 'string', | |
765 | optional => 1, | |
54cd19a8 DM |
766 | maxLength => 27, |
767 | minLength => 27, | |
9c7e0858 DM |
768 | }, |
769 | type => { | |
770 | type => 'string', | |
771 | optional => 1, | |
772 | enum => ['in', 'out', 'group'], | |
773 | }, | |
774 | action => { | |
775 | type => 'string', | |
776 | optional => 1, | |
54cd19a8 | 777 | enum => ['ACCEPT', 'DROP', 'REJECT'], |
9c7e0858 | 778 | }, |
e5076eee DM |
779 | macro => { |
780 | type => 'string', | |
781 | optional => 1, | |
54cd19a8 | 782 | maxLength => 128, |
e5076eee | 783 | }, |
54cd19a8 | 784 | iface => get_standard_option('pve-iface', { optional => 1 }), |
9c7e0858 | 785 | source => { |
54cd19a8 | 786 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
787 | optional => 1, |
788 | }, | |
789 | dest => { | |
54cd19a8 | 790 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
791 | optional => 1, |
792 | }, | |
793 | proto => { | |
54cd19a8 | 794 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
795 | optional => 1, |
796 | }, | |
797 | enable => { | |
798 | type => 'boolean', | |
799 | optional => 1, | |
800 | }, | |
801 | sport => { | |
54cd19a8 | 802 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
803 | optional => 1, |
804 | }, | |
805 | dport => { | |
54cd19a8 | 806 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
807 | optional => 1, |
808 | }, | |
809 | comment => { | |
810 | type => 'string', | |
811 | optional => 1, | |
812 | }, | |
813 | }; | |
814 | ||
ce36326d DM |
815 | sub cleanup_fw_rule { |
816 | my ($rule, $digest, $pos) = @_; | |
817 | ||
818 | my $r = {}; | |
819 | ||
820 | foreach my $k (keys %$rule) { | |
821 | next if !$rule_properties->{$k}; | |
822 | my $v = $rule->{$k}; | |
823 | next if !defined($v); | |
824 | $r->{$k} = $v; | |
825 | $r->{digest} = $digest; | |
826 | $r->{pos} = $pos; | |
827 | } | |
828 | ||
829 | return $r; | |
830 | } | |
831 | ||
9c7e0858 DM |
832 | sub add_rule_properties { |
833 | my ($properties) = @_; | |
834 | ||
835 | foreach my $k (keys %$rule_properties) { | |
3655b01f DM |
836 | my $h = $rule_properties->{$k}; |
837 | # copy data, so that we can modify later without side effects | |
838 | foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; } | |
9c7e0858 | 839 | } |
cbb5d6f3 | 840 | |
9c7e0858 DM |
841 | return $properties; |
842 | } | |
843 | ||
5b7974df DM |
844 | sub delete_rule_properties { |
845 | my ($rule, $delete_str) = @_; | |
846 | ||
847 | foreach my $opt (PVE::Tools::split_list($delete_str)) { | |
848 | raise_param_exc({ 'delete' => "no such property ('$opt')"}) | |
849 | if !defined($rule_properties->{$opt}); | |
850 | raise_param_exc({ 'delete' => "unable to delete required property '$opt'"}) | |
851 | if $opt eq 'type' || $opt eq 'action'; | |
852 | delete $rule->{$opt}; | |
853 | } | |
854 | ||
855 | return $rule; | |
856 | } | |
857 | ||
9a2745a0 DM |
858 | my $apply_macro = sub { |
859 | my ($macro_name, $param, $verify) = @_; | |
860 | ||
861 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
862 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
863 | ||
864 | my $rules = []; | |
865 | ||
866 | foreach my $templ (@$macro_rules) { | |
867 | my $rule = {}; | |
868 | my $param_used = {}; | |
869 | foreach my $k (keys %$templ) { | |
870 | my $v = $templ->{$k}; | |
871 | if ($v eq 'PARAM') { | |
872 | $v = $param->{$k}; | |
873 | $param_used->{$k} = 1; | |
874 | } elsif ($v eq 'DEST') { | |
875 | $v = $param->{dest}; | |
876 | $param_used->{dest} = 1; | |
877 | } elsif ($v eq 'SOURCE') { | |
878 | $v = $param->{source}; | |
879 | $param_used->{source} = 1; | |
880 | } | |
881 | ||
882 | if (!defined($v)) { | |
883 | my $msg = "missing parameter '$k' in macro '$macro_name'"; | |
884 | raise_param_exc({ macro => $msg }) if $verify; | |
885 | die "$msg\n"; | |
886 | } | |
887 | $rule->{$k} = $v; | |
888 | } | |
889 | foreach my $k (keys %$param) { | |
890 | next if $k eq 'macro'; | |
891 | next if !defined($param->{$k}); | |
892 | next if $param_used->{$k}; | |
893 | if (defined($rule->{$k})) { | |
894 | if ($rule->{$k} ne $param->{$k}) { | |
895 | my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')"; | |
896 | raise_param_exc({ $k => $msg }) if $verify; | |
897 | die "$msg\n"; | |
898 | } | |
899 | } else { | |
900 | $rule->{$k} = $param->{$k}; | |
901 | } | |
902 | } | |
903 | push @$rules, $rule; | |
904 | } | |
905 | ||
906 | return $rules; | |
907 | }; | |
908 | ||
7ca36671 DM |
909 | sub verify_rule { |
910 | my ($rule, $allow_groups) = @_; | |
911 | ||
912 | my $type = $rule->{type}; | |
913 | ||
914 | raise_param_exc({ type => "missing property"}) if !$type; | |
915 | raise_param_exc({ action => "missing property"}) if !$rule->{action}; | |
916 | ||
917 | if ($type eq 'in' || $type eq 'out') { | |
918 | raise_param_exc({ action => "unknown action '$rule->{action}'"}) | |
919 | if $rule->{action} !~ m/^(ACCEPT|DROP|REJECT)$/; | |
920 | } elsif ($type eq 'group') { | |
921 | raise_param_exc({ type => "security groups not allowed"}) | |
922 | if !$allow_groups; | |
923 | raise_param_exc({ action => "invalid characters in security group name"}) | |
924 | if $rule->{action} !~ m/^[A-Za-z0-9_\-]+$/; | |
925 | } else { | |
926 | raise_param_exc({ type => "unknown rule type '$type'"}); | |
927 | } | |
928 | ||
929 | # fixme: verify $rule->{iface}? | |
930 | ||
931 | if ($rule->{macro}) { | |
932 | my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}; | |
933 | raise_param_exc({ macro => "unknown macro '$rule->{macro}'"}) if !$preferred_name; | |
934 | $rule->{macro} = $preferred_name; | |
935 | } | |
936 | ||
937 | if ($rule->{dport}) { | |
938 | eval { parse_port_name_number_or_range($rule->{dport}); }; | |
939 | raise_param_exc({ dport => $@ }) if $@; | |
940 | } | |
941 | ||
942 | if ($rule->{sport}) { | |
943 | eval { parse_port_name_number_or_range($rule->{sport}); }; | |
944 | raise_param_exc({ sport => $@ }) if $@; | |
945 | } | |
946 | ||
947 | if ($rule->{source}) { | |
948 | eval { parse_address_list($rule->{source}); }; | |
949 | raise_param_exc({ source => $@ }) if $@; | |
950 | } | |
951 | ||
952 | if ($rule->{dest}) { | |
953 | eval { parse_address_list($rule->{dest}); }; | |
954 | raise_param_exc({ dest => $@ }) if $@; | |
955 | } | |
956 | ||
9a2745a0 DM |
957 | if ($rule->{macro}) { |
958 | &$apply_macro($rule->{macro}, $rule, 1); | |
959 | } | |
960 | ||
7ca36671 DM |
961 | return $rule; |
962 | } | |
963 | ||
9c7e0858 DM |
964 | sub copy_rule_data { |
965 | my ($rule, $param) = @_; | |
966 | ||
967 | foreach my $k (keys %$rule_properties) { | |
968 | if (defined(my $v = $param->{$k})) { | |
969 | if ($v eq '' || $v eq '-') { | |
970 | delete $rule->{$k}; | |
971 | } else { | |
972 | $rule->{$k} = $v; | |
973 | } | |
974 | } else { | |
975 | delete $rule->{$k}; | |
976 | } | |
977 | } | |
7ca36671 DM |
978 | |
979 | # verify rule now | |
980 | ||
9c7e0858 DM |
981 | return $rule; |
982 | } | |
983 | ||
984 | # core functions | |
780bcc0f DM |
985 | my $bridge_firewall_enabled = 0; |
986 | ||
987 | sub enable_bridge_firewall { | |
988 | ||
989 | return if $bridge_firewall_enabled; # only once | |
990 | ||
5f0a912c DM |
991 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
992 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 993 | |
6a8a75db DM |
994 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
995 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
996 | ||
780bcc0f DM |
997 | $bridge_firewall_enabled = 1; |
998 | } | |
999 | ||
8cebfa6f | 1000 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 1001 | |
b16e818e DM |
1002 | sub iptables_restore_cmdlist { |
1003 | my ($cmdlist) = @_; | |
3a616aa0 | 1004 | |
3fa83edf | 1005 | run_command("/sbin/iptables-restore -n", input => $cmdlist); |
3a616aa0 AD |
1006 | } |
1007 | ||
34cdedfa AD |
1008 | sub ipset_restore_cmdlist { |
1009 | my ($cmdlist) = @_; | |
1010 | ||
dd7a13fd | 1011 | run_command("/usr/sbin/ipset restore", input => $cmdlist); |
34cdedfa AD |
1012 | } |
1013 | ||
de2a57cd DM |
1014 | sub iptables_get_chains { |
1015 | ||
1016 | my $res = {}; | |
1017 | ||
1018 | # check what chains we want to track | |
1019 | my $is_pvefw_chain = sub { | |
1020 | my $name = shift; | |
1021 | ||
dec84fcd DM |
1022 | return 1 if $name =~ m/^PVEFW-\S+$/; |
1023 | ||
de2a57cd | 1024 | return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/; |
954f24b1 DM |
1025 | |
1026 | return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable | |
1027 | ||
9e15114a DM |
1028 | return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/; |
1029 | ||
da6fc60b | 1030 | return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/; |
f50656c2 | 1031 | return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/; |
de2a57cd DM |
1032 | |
1033 | return undef; | |
1034 | }; | |
1035 | ||
1036 | my $table = ''; | |
1037 | ||
c4a2e5ae DM |
1038 | my $hooks = {}; |
1039 | ||
de2a57cd DM |
1040 | my $parser = sub { |
1041 | my $line = shift; | |
1042 | ||
1043 | return if $line =~ m/^#/; | |
1044 | return if $line =~ m/^\s*$/; | |
1045 | ||
1046 | if ($line =~ m/^\*(\S+)$/) { | |
1047 | $table = $1; | |
1048 | return; | |
1049 | } | |
1050 | ||
1051 | return if $table ne 'filter'; | |
1052 | ||
1053 | if ($line =~ m/^:(\S+)\s/) { | |
1054 | my $chain = $1; | |
1055 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 1056 | $res->{$chain} = "unknown"; |
09d5f68e | 1057 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 1058 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 1059 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 1060 | $res->{$chain} = $sig; |
c4a2e5ae DM |
1061 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) { |
1062 | $hooks->{$1} = 1; | |
de2a57cd DM |
1063 | } else { |
1064 | # simply ignore the rest | |
1065 | return; | |
1066 | } | |
1067 | }; | |
1068 | ||
1069 | run_command("/sbin/iptables-save", outfunc => $parser); | |
1070 | ||
c4a2e5ae | 1071 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
1072 | } |
1073 | ||
9bf7d929 DM |
1074 | sub iptables_chain_digest { |
1075 | my ($rules) = @_; | |
1076 | my $digest = Digest::SHA->new('sha1'); | |
1077 | foreach my $rule (@$rules) { # order is important | |
1078 | $digest->add($rule); | |
1079 | } | |
1080 | return $digest->b64digest; | |
1081 | } | |
1082 | ||
3f95d14a DM |
1083 | sub ipset_chain_digest { |
1084 | my ($rules) = @_; | |
4bd0a9c4 | 1085 | |
3f95d14a DM |
1086 | my $digest = Digest::SHA->new('sha1'); |
1087 | foreach my $rule (sort @$rules) { # note: sorted | |
1088 | $digest->add($rule); | |
1089 | } | |
1090 | return $digest->b64digest; | |
1091 | } | |
1092 | ||
34cdedfa AD |
1093 | sub ipset_get_chains { |
1094 | ||
1095 | my $res = {}; | |
1096 | my $chains = {}; | |
1097 | ||
1098 | my $parser = sub { | |
1099 | my $line = shift; | |
1100 | ||
1101 | return if $line =~ m/^#/; | |
1102 | return if $line =~ m/^\s*$/; | |
4b96e877 | 1103 | if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) { |
81a0bf43 DM |
1104 | my $chain = $1; |
1105 | $line =~ s/\s+$//; # delete trailing white space | |
1106 | push @{$chains->{$chain}}, $line; | |
34cdedfa AD |
1107 | } else { |
1108 | # simply ignore the rest | |
1109 | return; | |
1110 | } | |
1111 | }; | |
1112 | ||
3f95d14a | 1113 | run_command("/usr/sbin/ipset save", outfunc => $parser); |
34cdedfa | 1114 | |
3f95d14a DM |
1115 | # compute digest for each chain |
1116 | foreach my $chain (keys %$chains) { | |
1117 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
1118 | } |
1119 | ||
1120 | return $res; | |
1121 | } | |
1122 | ||
eba0fb64 | 1123 | sub ruleset_generate_cmdstr { |
ba791b1f | 1124 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_; |
3a616aa0 | 1125 | |
00bb4391 | 1126 | return if defined($rule->{enable}) && !$rule->{enable}; |
11bac5c2 | 1127 | |
e5076eee DM |
1128 | die "unable to emit macro - internal error" if $rule->{macro}; # should not happen |
1129 | ||
1130 | my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0; | |
1131 | my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0; | |
e5076eee | 1132 | |
41524a58 | 1133 | my @cmd = (); |
3a616aa0 | 1134 | |
eba0fb64 DM |
1135 | push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in}; |
1136 | push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
1137 | ||
ba791b1f AD |
1138 | my $source = $rule->{source}; |
1139 | my $dest = $rule->{dest}; | |
1140 | ||
cbb5d6f3 DM |
1141 | if ($source) { |
1142 | if ($source =~ m/^(\+)(\S+)$/) { | |
936af352 | 1143 | die "no such ipset $2" if !$cluster_conf->{ipset}->{$2}; |
4b96e877 | 1144 | push @cmd, "-m set --match-set PVEFW-$2 src"; |
ba791b1f | 1145 | |
ac8242cc | 1146 | } elsif ($source =~ m/\-/){ |
ba791b1f AD |
1147 | push @cmd, "-m iprange --src-range $source"; |
1148 | ||
cbb5d6f3 | 1149 | } else { |
ba791b1f AD |
1150 | push @cmd, "-s $source"; |
1151 | } | |
1152 | } | |
1153 | ||
cbb5d6f3 DM |
1154 | if ($dest) { |
1155 | if ($dest =~ m/^(\+)(\S+)$/) { | |
936af352 | 1156 | die "no such ipset $2" if !$cluster_conf->{ipset}->{$2}; |
4b96e877 | 1157 | push @cmd, "-m set --match-set PVEFW-$2 dst"; |
ba791b1f | 1158 | |
cbb5d6f3 | 1159 | } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){ |
ba791b1f AD |
1160 | push @cmd, "-m iprange --dst-range $dest"; |
1161 | ||
cbb5d6f3 | 1162 | } else { |
ba791b1f AD |
1163 | push @cmd, "-s $dest"; |
1164 | } | |
1165 | } | |
4b586518 | 1166 | |
181390b0 | 1167 | if ($rule->{proto}) { |
41524a58 | 1168 | push @cmd, "-p $rule->{proto}"; |
e3a1d391 | 1169 | |
181390b0 | 1170 | my $multiport = 0; |
e5076eee DM |
1171 | $multiport++ if $nbdport > 1; |
1172 | $multiport++ if $nbsport > 1; | |
e3a1d391 | 1173 | |
41524a58 | 1174 | push @cmd, "--match multiport" if $multiport; |
4b586518 | 1175 | |
cbb5d6f3 | 1176 | die "multiport: option '--sports' cannot be used together with '--dports'\n" |
181390b0 DM |
1177 | if ($multiport == 2) && ($rule->{dport} ne $rule->{sport}); |
1178 | ||
1179 | if ($rule->{dport}) { | |
1180 | if ($rule->{proto} && $rule->{proto} eq 'icmp') { | |
1181 | # Note: we use dport to store --icmp-type | |
1182 | die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}}); | |
41524a58 | 1183 | push @cmd, "-m icmp --icmp-type $rule->{dport}"; |
181390b0 | 1184 | } else { |
e5076eee | 1185 | if ($nbdport > 1) { |
181390b0 | 1186 | if ($multiport == 2) { |
41524a58 | 1187 | push @cmd, "--ports $rule->{dport}"; |
181390b0 | 1188 | } else { |
41524a58 | 1189 | push @cmd, "--dports $rule->{dport}"; |
181390b0 | 1190 | } |
e3a1d391 | 1191 | } else { |
41524a58 | 1192 | push @cmd, "--dport $rule->{dport}"; |
e3a1d391 | 1193 | } |
4b586518 DM |
1194 | } |
1195 | } | |
4b586518 | 1196 | |
181390b0 | 1197 | if ($rule->{sport}) { |
e5076eee | 1198 | if ($nbsport > 1) { |
41524a58 | 1199 | push @cmd, "--sports $rule->{sport}" if $multiport != 2; |
181390b0 | 1200 | } else { |
41524a58 | 1201 | push @cmd, "--sport $rule->{sport}"; |
181390b0 | 1202 | } |
4b586518 | 1203 | } |
181390b0 DM |
1204 | } elsif ($rule->{dport} || $rule->{sport}) { |
1205 | warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport}; | |
1206 | warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport}; | |
4b586518 DM |
1207 | } |
1208 | ||
41524a58 | 1209 | push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; |
4e6112f9 DM |
1210 | |
1211 | if (my $action = $rule->{action}) { | |
cbb5d6f3 | 1212 | $action = $actions->{$action} if defined($actions->{$action}); |
4e6112f9 | 1213 | $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK'; |
41524a58 | 1214 | push @cmd, $goto ? "-g $action" : "-j $action"; |
181390b0 | 1215 | } |
3a616aa0 | 1216 | |
eba0fb64 DM |
1217 | return scalar(@cmd) ? join(' ', @cmd) : undef; |
1218 | } | |
1219 | ||
1220 | sub ruleset_generate_rule { | |
ba791b1f | 1221 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_; |
eba0fb64 | 1222 | |
e5076eee DM |
1223 | my $rules; |
1224 | ||
1225 | if ($rule->{macro}) { | |
1226 | $rules = &$apply_macro($rule->{macro}, $rule); | |
1227 | } else { | |
1228 | $rules = [ $rule ]; | |
1229 | } | |
1230 | ||
cbb5d6f3 | 1231 | foreach my $tmp (@$rules) { |
ba791b1f | 1232 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) { |
e5076eee DM |
1233 | ruleset_addrule($ruleset, $chain, $cmdstr); |
1234 | } | |
41524a58 | 1235 | } |
3fa83edf | 1236 | } |
0f168d7b | 1237 | |
eba0fb64 DM |
1238 | sub ruleset_generate_rule_insert { |
1239 | my ($ruleset, $chain, $rule, $actions, $goto) = @_; | |
1240 | ||
e5076eee DM |
1241 | die "implement me" if $rule->{macro}; # not implemented, because not needed so far |
1242 | ||
eba0fb64 DM |
1243 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) { |
1244 | ruleset_insertrule($ruleset, $chain, $cmdstr); | |
1245 | } | |
1246 | } | |
3fa83edf DM |
1247 | |
1248 | sub ruleset_create_chain { | |
1249 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1250 | |
d050c724 | 1251 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 1252 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 1253 | |
3fa83edf DM |
1254 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
1255 | ||
1256 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
1257 | } |
1258 | ||
3fa83edf DM |
1259 | sub ruleset_chain_exist { |
1260 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1261 | |
3fa83edf DM |
1262 | return $ruleset->{$chain} ? 1 : undef; |
1263 | } | |
3a616aa0 | 1264 | |
3fa83edf DM |
1265 | sub ruleset_addrule { |
1266 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1267 | |
3fa83edf | 1268 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1269 | |
3fa83edf DM |
1270 | push @{$ruleset->{$chain}}, "-A $chain $rule"; |
1271 | } | |
3a616aa0 | 1272 | |
3fa83edf DM |
1273 | sub ruleset_insertrule { |
1274 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1275 | |
3fa83edf | 1276 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1277 | |
3fa83edf DM |
1278 | unshift @{$ruleset->{$chain}}, "-A $chain $rule"; |
1279 | } | |
3a616aa0 | 1280 | |
782c4cde DM |
1281 | sub get_log_rule_base { |
1282 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
cbb5d6f3 | 1283 | |
782c4cde DM |
1284 | die "internal error - no log level" if !defined($loglevel); |
1285 | ||
1286 | $vmid = 0 if !defined($vmid); | |
1287 | ||
cbb5d6f3 | 1288 | # Note: we use special format for prefix to pass further |
782c4cde DM |
1289 | # info to log daemon (VMID, LOGVELEL and CHAIN) |
1290 | ||
1291 | return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; | |
1292 | } | |
1293 | ||
1294 | sub ruleset_addlog { | |
1295 | my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_; | |
1296 | ||
1297 | return if !defined($loglevel); | |
1298 | ||
1299 | my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel); | |
1300 | ||
1301 | $logrule = "$rule $logrule" if defined($rule); | |
1302 | ||
1303 | ruleset_addrule($ruleset, $chain, $logrule) | |
1304 | } | |
1305 | ||
3fa83edf | 1306 | sub generate_bridge_chains { |
530c005e DM |
1307 | my ($ruleset, $hostfw_conf, $bridge, $routing_table) = @_; |
1308 | ||
1309 | my $options = $hostfw_conf->{options} || {}; | |
1310 | ||
1311 | die "error: detected direct route to bridge '$bridge'\n" | |
1312 | if !$options->{allow_bridge_route} && $routing_table->{$bridge}; | |
2f3d8d76 | 1313 | |
5927497d DM |
1314 | if (!ruleset_chain_exist($ruleset, "$bridge-FW")) { |
1315 | ruleset_create_chain($ruleset, "$bridge-FW"); | |
3cc81077 DM |
1316 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-out -j $bridge-FW"); |
1317 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-in -j $bridge-FW"); | |
3fa83edf | 1318 | } |
3a616aa0 | 1319 | |
3fa83edf DM |
1320 | if (!ruleset_chain_exist($ruleset, "$bridge-OUT")) { |
1321 | ruleset_create_chain($ruleset, "$bridge-OUT"); | |
3cc81077 DM |
1322 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-in -j $bridge-OUT"); |
1323 | ruleset_insertrule($ruleset, "PVEFW-INPUT", "-i $bridge -m physdev --physdev-is-in -j $bridge-OUT"); | |
9fcad984 AD |
1324 | } |
1325 | ||
1326 | if (!ruleset_chain_exist($ruleset, "$bridge-IN")) { | |
1327 | ruleset_create_chain($ruleset, "$bridge-IN"); | |
3cc81077 | 1328 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j $bridge-IN"); |
fdb0bf20 | 1329 | ruleset_addrule($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT"); |
7323008d | 1330 | # accept traffic to unmanaged bridge ports |
3cc81077 | 1331 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j ACCEPT "); |
3fa83edf DM |
1332 | } |
1333 | } | |
3a616aa0 | 1334 | |
ead850e8 | 1335 | sub ruleset_add_chain_policy { |
782c4cde | 1336 | my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
1337 | |
1338 | if ($policy eq 'ACCEPT') { | |
1339 | ||
1340 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' }, | |
1341 | { ACCEPT => $accept_action}); | |
1342 | ||
1343 | } elsif ($policy eq 'DROP') { | |
1344 | ||
1345 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop"); | |
1346 | ||
782c4cde | 1347 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1348 | |
1349 | ruleset_addrule($ruleset, $chain, "-j DROP"); | |
1350 | } elsif ($policy eq 'REJECT') { | |
1351 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject"); | |
1352 | ||
782c4cde | 1353 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1354 | |
1355 | ruleset_addrule($ruleset, $chain, "-g PVEFW-reject"); | |
1356 | } else { | |
1357 | # should not happen | |
1358 | die "internal error: unknown policy '$policy'"; | |
1359 | } | |
1360 | } | |
1361 | ||
9e15114a DM |
1362 | sub ruleset_create_vm_chain { |
1363 | my ($ruleset, $chain, $options, $macaddr, $direction) = @_; | |
3a616aa0 | 1364 | |
9e15114a | 1365 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1366 | my $accept = generate_nfqueue($options); |
3a616aa0 | 1367 | |
bee633ab | 1368 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
9e15114a | 1369 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); |
bee633ab DM |
1370 | } |
1371 | ||
ce15d90b | 1372 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
76a2d1e7 | 1373 | if ($direction eq 'OUT') { |
cbb5d6f3 | 1374 | ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK', |
0f168d7b | 1375 | proto => 'udp', sport => 68, dport => 67 }); |
76a2d1e7 | 1376 | } else { |
cbb5d6f3 | 1377 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT', |
0f168d7b | 1378 | proto => 'udp', sport => 67, dport => 68 }); |
76a2d1e7 | 1379 | } |
ce15d90b DM |
1380 | } |
1381 | ||
bee633ab | 1382 | if ($options->{tcpflags}) { |
9e15114a | 1383 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); |
bee633ab DM |
1384 | } |
1385 | ||
9e15114a | 1386 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
cbb5d6f3 | 1387 | if ($direction eq 'OUT') { |
b47ecc88 | 1388 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -g PVEFW-SET-ACCEPT-MARK"); |
cbb5d6f3 | 1389 | } else { |
b47ecc88 AD |
1390 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
1391 | } | |
cbb5d6f3 | 1392 | |
b21aca2c DM |
1393 | if ($direction eq 'OUT') { |
1394 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
9e15114a | 1395 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP"); |
b21aca2c | 1396 | } |
9e15114a | 1397 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
c29f55c9 | 1398 | } |
9e15114a DM |
1399 | } |
1400 | ||
1401 | sub ruleset_generate_vm_rules { | |
fca39c2c | 1402 | my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_; |
9e15114a DM |
1403 | |
1404 | my $lc_direction = lc($direction); | |
c29f55c9 | 1405 | |
92e976b3 DM |
1406 | foreach my $rule (@$rules) { |
1407 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
ea9e5116 | 1408 | next if !$rule->{enable}; |
92e976b3 | 1409 | if ($rule->{type} eq 'group') { |
cbb5d6f3 | 1410 | my $group_chain = "GROUP-$rule->{action}-$direction"; |
92e976b3 | 1411 | if(!ruleset_chain_exist($ruleset, $group_chain)){ |
fca39c2c | 1412 | generate_group_rules($ruleset, $cluster_conf, $rule->{action}); |
92e976b3 | 1413 | } |
9e15114a | 1414 | ruleset_addrule($ruleset, $chain, "-j $group_chain"); |
b47ecc88 AD |
1415 | if ($direction eq 'OUT'){ |
1416 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN"); | |
1417 | }else{ | |
1418 | my $accept = generate_nfqueue($options); | |
1419 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept"); | |
1420 | } | |
1421 | ||
92e976b3 DM |
1422 | } else { |
1423 | next if $rule->{type} ne $lc_direction; | |
1424 | if ($direction eq 'OUT') { | |
cbb5d6f3 | 1425 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 1426 | { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
4e6112f9 | 1427 | } else { |
b47ecc88 | 1428 | my $accept = generate_nfqueue($options); |
ba791b1f | 1429 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
3a616aa0 | 1430 | } |
4e6112f9 | 1431 | } |
3a616aa0 | 1432 | } |
9e15114a DM |
1433 | } |
1434 | ||
b47ecc88 AD |
1435 | sub generate_nfqueue { |
1436 | my ($options) = @_; | |
1437 | ||
1438 | my $action = ""; | |
1439 | if($options->{ips}){ | |
1440 | $action = "NFQUEUE"; | |
1441 | if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
1442 | if(defined($3) && defined($1)) { | |
1443 | $action .= " --queue-balance $1:$3"; | |
1444 | }elsif (defined($1)) { | |
1445 | $action .= " --queue-num $1"; | |
1446 | } | |
1447 | } | |
1448 | $action .= " --queue-bypass"; | |
1449 | }else{ | |
1450 | $action = "ACCEPT"; | |
1451 | } | |
1452 | ||
1453 | return $action; | |
1454 | } | |
1455 | ||
da6fc60b AD |
1456 | sub ruleset_generate_vm_ipsrules { |
1457 | my ($ruleset, $options, $direction, $iface, $bridge) = @_; | |
1458 | ||
1459 | if ($options->{ips} && $direction eq 'IN') { | |
1460 | my $nfqueue = generate_nfqueue($options); | |
1461 | ||
1462 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1463 | ruleset_create_chain($ruleset, "PVEFW-IPS"); | |
1464 | } | |
1465 | ||
1466 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1467 | ruleset_create_chain($ruleset, "$bridge-IPS"); | |
1468 | ruleset_insertrule($ruleset, "PVEFW-IPS", "-o $bridge -m physdev --physdev-is-out -j $bridge-IPS"); | |
1469 | } | |
1470 | ||
1471 | ruleset_addrule($ruleset, "$bridge-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue"); | |
1472 | } | |
1473 | } | |
1474 | ||
9e15114a | 1475 | sub generate_venet_rules_direction { |
fca39c2c | 1476 | my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_; |
9e15114a | 1477 | |
5176619e | 1478 | parse_address_list($ip); # make sure we have a valid $ip list |
9e15114a DM |
1479 | |
1480 | my $lc_direction = lc($direction); | |
1481 | ||
1482 | my $rules = $vmfw_conf->{rules}; | |
1483 | ||
1484 | my $options = $vmfw_conf->{options}; | |
1485 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1486 | ||
1487 | my $chain = "venet0-$vmid-$direction"; | |
1488 | ||
1489 | ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction); | |
1490 | ||
fca39c2c | 1491 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction); |
9e15114a DM |
1492 | |
1493 | # implement policy | |
1494 | my $policy; | |
1495 | ||
1496 | if ($direction eq 'OUT') { | |
1497 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
1498 | } else { | |
1499 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default | |
1500 | } | |
1501 | ||
b47ecc88 AD |
1502 | my $accept = generate_nfqueue($options); |
1503 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1504 | ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action); |
9e15114a | 1505 | |
38485daa | 1506 | # plug into FORWARD, INPUT and OUTPUT chain |
eba0fb64 DM |
1507 | if ($direction eq 'OUT') { |
1508 | ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD", { | |
1509 | action => $chain, | |
1510 | source => $ip, | |
1511 | iface_in => 'venet0'}); | |
38485daa DM |
1512 | |
1513 | ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT", { | |
1514 | action => $chain, | |
1515 | source => $ip, | |
1516 | iface_in => 'venet0'}); | |
eba0fb64 DM |
1517 | } else { |
1518 | ruleset_generate_rule($ruleset, "PVEFW-FORWARD", { | |
1519 | action => $chain, | |
1520 | dest => $ip, | |
1521 | iface_out => 'venet0'}); | |
38485daa DM |
1522 | |
1523 | ruleset_generate_rule($ruleset, "PVEFW-OUTPUT", { | |
1524 | action => $chain, | |
1525 | dest => $ip, | |
1526 | iface_out => 'venet0'}); | |
eba0fb64 | 1527 | } |
9e15114a DM |
1528 | } |
1529 | ||
1530 | sub generate_tap_rules_direction { | |
fca39c2c | 1531 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_; |
9e15114a DM |
1532 | |
1533 | my $lc_direction = lc($direction); | |
1534 | ||
1535 | my $rules = $vmfw_conf->{rules}; | |
1536 | ||
1537 | my $options = $vmfw_conf->{options}; | |
1538 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1539 | ||
1540 | my $tapchain = "$iface-$direction"; | |
1541 | ||
1542 | ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction); | |
1543 | ||
fca39c2c | 1544 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options); |
3a616aa0 | 1545 | |
da6fc60b AD |
1546 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge); |
1547 | ||
ccae0b50 DM |
1548 | # implement policy |
1549 | my $policy; | |
1550 | ||
1551 | if ($direction eq 'OUT') { | |
72f63fde | 1552 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
ccae0b50 | 1553 | } else { |
72f63fde | 1554 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
ccae0b50 DM |
1555 | } |
1556 | ||
b47ecc88 AD |
1557 | my $accept = generate_nfqueue($options); |
1558 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1559 | ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action); |
3a616aa0 | 1560 | |
3fa83edf | 1561 | # plug the tap chain to bridge chain |
3cc81077 DM |
1562 | if ($direction eq 'IN') { |
1563 | ruleset_insertrule($ruleset, "$bridge-IN", | |
1564 | "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain"); | |
1565 | } else { | |
1566 | ruleset_insertrule($ruleset, "$bridge-OUT", | |
1567 | "-m physdev --physdev-in $iface -j $tapchain"); | |
1568 | } | |
3a616aa0 AD |
1569 | } |
1570 | ||
d18c1e2b | 1571 | sub enable_host_firewall { |
fca39c2c | 1572 | my ($ruleset, $hostfw_conf, $cluster_conf) = @_; |
0bd5f137 | 1573 | |
51bae274 | 1574 | # fixme: allow security groups |
0bd5f137 | 1575 | |
92e976b3 DM |
1576 | my $options = $hostfw_conf->{options}; |
1577 | my $rules = $hostfw_conf->{rules}; | |
178a63be | 1578 | |
3fa83edf | 1579 | # host inbound firewall |
dec84fcd DM |
1580 | my $chain = "PVEFW-HOST-IN"; |
1581 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 1582 | |
178a63be DM |
1583 | my $loglevel = get_option_log_level($options, "log_level_in"); |
1584 | ||
4ac863a6 DM |
1585 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
1586 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); | |
1587 | } | |
1588 | ||
fb424a00 DM |
1589 | if ($options->{tcpflags}) { |
1590 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); | |
1591 | } | |
1592 | ||
7fab95bc DM |
1593 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1594 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1595 | ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT"); |
1596 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1597 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1598 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1599 | |
23e888f8 DM |
1600 | # we use RETURN because we need to check also tap rules |
1601 | my $accept_action = 'RETURN'; | |
1602 | ||
92e976b3 DM |
1603 | foreach my $rule (@$rules) { |
1604 | next if $rule->{type} ne 'in'; | |
ba791b1f | 1605 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
0bd5f137 AD |
1606 | } |
1607 | ||
23e888f8 | 1608 | # implement input policy |
72f63fde | 1609 | my $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
782c4cde | 1610 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 1611 | |
3fa83edf | 1612 | # host outbound firewall |
aadd745e | 1613 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
1614 | ruleset_create_chain($ruleset, $chain); |
1615 | ||
178a63be DM |
1616 | $loglevel = get_option_log_level($options, "log_level_out"); |
1617 | ||
7fab95bc DM |
1618 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1619 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1620 | ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT"); |
1621 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1622 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1623 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1624 | |
23e888f8 DM |
1625 | # we use RETURN because we may want to check other thigs later |
1626 | $accept_action = 'RETURN'; | |
1627 | ||
92e976b3 DM |
1628 | foreach my $rule (@$rules) { |
1629 | next if $rule->{type} ne 'out'; | |
ba791b1f | 1630 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
0bd5f137 AD |
1631 | } |
1632 | ||
23e888f8 | 1633 | # implement output policy |
72f63fde | 1634 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
782c4cde | 1635 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
6158271d | 1636 | |
dec84fcd DM |
1637 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT"); |
1638 | ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
1639 | } |
1640 | ||
1641 | sub generate_group_rules { | |
fca39c2c | 1642 | my ($ruleset, $cluster_conf, $group) = @_; |
c6f5cc88 | 1643 | die "no such security group '$group'\n" if !$cluster_conf->{groups}->{$group}; |
9d31b418 | 1644 | |
c6f5cc88 | 1645 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 1646 | |
3fa83edf | 1647 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 1648 | |
3fa83edf | 1649 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1650 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1651 | |
92e976b3 DM |
1652 | foreach my $rule (@$rules) { |
1653 | next if $rule->{type} ne 'in'; | |
ba791b1f | 1654 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 AD |
1655 | } |
1656 | ||
3fa83edf | 1657 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 1658 | |
3fa83edf | 1659 | ruleset_create_chain($ruleset, $chain); |
4e6112f9 | 1660 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1661 | |
92e976b3 DM |
1662 | foreach my $rule (@$rules) { |
1663 | next if $rule->{type} ne 'out'; | |
1664 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to | |
1665 | # check also other tap rules later | |
cbb5d6f3 | 1666 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 1667 | { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 | 1668 | } |
9d31b418 AD |
1669 | } |
1670 | ||
51bae274 DM |
1671 | my $MAX_NETS = 32; |
1672 | my $valid_netdev_names = {}; | |
1673 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
1674 | $valid_netdev_names->{"net$i"} = 1; | |
1675 | } | |
5e1267a5 | 1676 | |
51bae274 DM |
1677 | sub parse_fw_rule { |
1678 | my ($line, $need_iface, $allow_groups) = @_; | |
5e1267a5 | 1679 | |
92e976b3 | 1680 | my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport); |
51bae274 | 1681 | |
11bac5c2 | 1682 | # we can add single line comments to the end of the rule |
30c1ae52 | 1683 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; |
11bac5c2 DM |
1684 | |
1685 | # we can disable a rule when prefixed with '|' | |
ea9e5116 DM |
1686 | my $enable = 1; |
1687 | ||
1688 | $enable = 0 if $line =~ s/^\|//; | |
51bae274 DM |
1689 | |
1690 | my @data = split(/\s+/, $line); | |
92e976b3 | 1691 | my $expected_elements = $need_iface ? 8 : 7; |
51bae274 DM |
1692 | |
1693 | die "wrong number of rule elements\n" if scalar(@data) > $expected_elements; | |
1694 | ||
1695 | if ($need_iface) { | |
92e976b3 | 1696 | ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data |
51bae274 | 1697 | } else { |
92e976b3 | 1698 | ($type, $action, $source, $dest, $proto, $dport, $sport) = @data; |
51bae274 DM |
1699 | } |
1700 | ||
92e976b3 | 1701 | die "incomplete rule\n" if ! ($type && $action); |
51bae274 | 1702 | |
961b4928 | 1703 | my $macro; |
961b4928 | 1704 | |
92e976b3 DM |
1705 | $type = lc($type); |
1706 | ||
1707 | if ($type eq 'in' || $type eq 'out') { | |
1708 | if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) { | |
1709 | # OK | |
1710 | } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
e5076eee DM |
1711 | $action = $2; |
1712 | my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)}; | |
1713 | die "unknown macro '$1'\n" if !$preferred_name; | |
1714 | $macro = $preferred_name; | |
92e976b3 DM |
1715 | } else { |
1716 | die "unknown action '$action'\n"; | |
1717 | } | |
1718 | } elsif ($type eq 'group') { | |
1719 | die "wrong number of rule elements\n" if scalar(@data) != 3; | |
1720 | die "groups disabled\n" if !$allow_groups; | |
1721 | ||
cbb5d6f3 | 1722 | die "invalid characters in group name\n" if $action !~ m/^[A-Za-z0-9_\-]+$/; |
51bae274 | 1723 | } else { |
92e976b3 | 1724 | die "unknown rule type '$type'\n"; |
51bae274 DM |
1725 | } |
1726 | ||
1727 | if ($need_iface) { | |
1728 | $iface = undef if $iface && $iface eq '-'; | |
51bae274 DM |
1729 | } |
1730 | ||
1731 | $proto = undef if $proto && $proto eq '-'; | |
54cd19a8 | 1732 | pve_fw_verify_protocol_spec($proto) if $proto; |
51bae274 DM |
1733 | |
1734 | $source = undef if $source && $source eq '-'; | |
1735 | $dest = undef if $dest && $dest eq '-'; | |
1736 | ||
1737 | $dport = undef if $dport && $dport eq '-'; | |
1738 | $sport = undef if $sport && $sport eq '-'; | |
1739 | ||
e5076eee DM |
1740 | parse_port_name_number_or_range($dport) if defined($dport); |
1741 | parse_port_name_number_or_range($sport) if defined($sport); | |
ba791b1f | 1742 | |
d72beb8e DM |
1743 | parse_address_list($source) if $source; |
1744 | parse_address_list($dest) if $dest; | |
51bae274 | 1745 | |
e5076eee | 1746 | return { |
92e976b3 | 1747 | type => $type, |
ea9e5116 | 1748 | enable => $enable, |
11bac5c2 | 1749 | comment => $comment, |
51bae274 | 1750 | action => $action, |
e5076eee | 1751 | macro => $macro, |
51bae274 DM |
1752 | iface => $iface, |
1753 | source => $source, | |
1754 | dest => $dest, | |
51bae274 DM |
1755 | proto => $proto, |
1756 | dport => $dport, | |
1757 | sport => $sport, | |
51bae274 DM |
1758 | }; |
1759 | } | |
1760 | ||
2d404ffc | 1761 | sub parse_vmfw_option { |
85c6eaed DM |
1762 | my ($line) = @_; |
1763 | ||
1764 | my ($opt, $value); | |
1765 | ||
178a63be DM |
1766 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
1767 | ||
b47ecc88 | 1768 | if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
1769 | $opt = lc($1); |
1770 | $value = int($2); | |
178a63be DM |
1771 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
1772 | $opt = lc($1); | |
1773 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1774 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
1775 | $opt = lc($1); |
1776 | $value = uc($3); | |
b47ecc88 AD |
1777 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
1778 | $opt = lc($1); | |
1779 | $value = $2; | |
9c6b6efd | 1780 | } else { |
85c6eaed DM |
1781 | chomp $line; |
1782 | die "can't parse option '$line'\n" | |
1783 | } | |
1784 | ||
1785 | return ($opt, $value); | |
1786 | } | |
1787 | ||
2d404ffc DM |
1788 | sub parse_hostfw_option { |
1789 | my ($line) = @_; | |
1790 | ||
1791 | my ($opt, $value); | |
1792 | ||
1793 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
1794 | ||
cc10e5d7 | 1795 | if ($line =~ m/^(enable|dhcp|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) { |
2d404ffc DM |
1796 | $opt = lc($1); |
1797 | $value = int($2); | |
178a63be | 1798 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
1799 | $opt = lc($1); |
1800 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1801 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2d404ffc DM |
1802 | $opt = lc($1); |
1803 | $value = uc($3); | |
490cdead DM |
1804 | } elsif ($line =~ m/^(nf_conntrack_max):\s*(\d+)\s*$/i) { |
1805 | $opt = lc($1); | |
1806 | $value = int($2); | |
2d404ffc DM |
1807 | } else { |
1808 | chomp $line; | |
1809 | die "can't parse option '$line'\n" | |
1810 | } | |
1811 | ||
1812 | return ($opt, $value); | |
1813 | } | |
1814 | ||
c6f5cc88 DM |
1815 | sub parse_clusterfw_option { |
1816 | my ($line) = @_; | |
1817 | ||
1818 | my ($opt, $value); | |
1819 | ||
1820 | if ($line =~ m/^(enable):\s*(0|1)\s*$/i) { | |
1821 | $opt = lc($1); | |
1822 | $value = int($2); | |
1823 | } else { | |
1824 | chomp $line; | |
1825 | die "can't parse option '$line'\n" | |
1826 | } | |
1827 | ||
1828 | return ($opt, $value); | |
1829 | } | |
1830 | ||
51bae274 DM |
1831 | sub parse_vm_fw_rules { |
1832 | my ($filename, $fh) = @_; | |
1833 | ||
92e976b3 | 1834 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1835 | |
1836 | my $section; | |
1837 | ||
e7b35711 DM |
1838 | my $digest = Digest::SHA->new('sha1'); |
1839 | ||
5e1267a5 | 1840 | while (defined(my $line = <$fh>)) { |
e7b35711 DM |
1841 | $digest->add($line); |
1842 | ||
5e1267a5 DM |
1843 | next if $line =~ m/^#/; |
1844 | next if $line =~ m/^\s*$/; | |
1845 | ||
961b4928 DM |
1846 | my $linenr = $fh->input_line_number(); |
1847 | my $prefix = "$filename (line $linenr)"; | |
1848 | ||
85c6eaed | 1849 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
5e1267a5 | 1850 | $section = lc($1); |
85c6eaed | 1851 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1852 | next; |
1853 | } | |
51bae274 | 1854 | if (!$section) { |
961b4928 | 1855 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1856 | next; |
1857 | } | |
1858 | ||
85c6eaed DM |
1859 | next if !$res->{$section}; # skip undefined section |
1860 | ||
1861 | if ($section eq 'options') { | |
6158271d | 1862 | eval { |
2d404ffc | 1863 | my ($opt, $value) = parse_vmfw_option($line); |
85c6eaed DM |
1864 | $res->{options}->{$opt} = $value; |
1865 | }; | |
1866 | warn "$prefix: $@" if $@; | |
1867 | next; | |
1868 | } | |
1869 | ||
e5076eee DM |
1870 | my $rule; |
1871 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
51bae274 | 1872 | if (my $err = $@) { |
961b4928 | 1873 | warn "$prefix: $err"; |
5e1267a5 DM |
1874 | next; |
1875 | } | |
1876 | ||
e5076eee | 1877 | push @{$res->{$section}}, $rule; |
51bae274 DM |
1878 | } |
1879 | ||
e7b35711 DM |
1880 | $res->{digest} = $digest->b64digest; |
1881 | ||
51bae274 DM |
1882 | return $res; |
1883 | } | |
1884 | ||
1885 | sub parse_host_fw_rules { | |
1886 | my ($filename, $fh) = @_; | |
1887 | ||
92e976b3 | 1888 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1889 | |
1890 | my $section; | |
1891 | ||
8b27beb9 DM |
1892 | my $digest = Digest::SHA->new('sha1'); |
1893 | ||
51bae274 | 1894 | while (defined(my $line = <$fh>)) { |
8b27beb9 DM |
1895 | $digest->add($line); |
1896 | ||
51bae274 DM |
1897 | next if $line =~ m/^#/; |
1898 | next if $line =~ m/^\s*$/; | |
1899 | ||
961b4928 DM |
1900 | my $linenr = $fh->input_line_number(); |
1901 | my $prefix = "$filename (line $linenr)"; | |
1902 | ||
2d404ffc | 1903 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
51bae274 | 1904 | $section = lc($1); |
2d404ffc | 1905 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1906 | next; |
1907 | } | |
51bae274 | 1908 | if (!$section) { |
961b4928 | 1909 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1910 | next; |
1911 | } | |
1912 | ||
2d404ffc DM |
1913 | next if !$res->{$section}; # skip undefined section |
1914 | ||
1915 | if ($section eq 'options') { | |
1916 | eval { | |
2d404ffc DM |
1917 | my ($opt, $value) = parse_hostfw_option($line); |
1918 | $res->{options}->{$opt} = $value; | |
1919 | }; | |
1920 | warn "$prefix: $@" if $@; | |
1921 | next; | |
1922 | } | |
1923 | ||
e5076eee DM |
1924 | my $rule; |
1925 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
ecbea048 | 1926 | if (my $err = $@) { |
961b4928 | 1927 | warn "$prefix: $err"; |
ecbea048 | 1928 | next; |
ecbea048 | 1929 | } |
cbb5d6f3 | 1930 | |
e5076eee | 1931 | push @{$res->{$section}}, $rule; |
51bae274 | 1932 | } |
ecbea048 | 1933 | |
cbb5d6f3 | 1934 | $res->{digest} = $digest->b64digest; |
8b27beb9 | 1935 | |
51bae274 DM |
1936 | return $res; |
1937 | } | |
4cdbb3b7 | 1938 | |
c6f5cc88 | 1939 | sub parse_cluster_fw_rules { |
51bae274 | 1940 | my ($filename, $fh) = @_; |
5e1267a5 | 1941 | |
51bae274 DM |
1942 | my $section; |
1943 | my $group; | |
1944 | ||
c4a2e5ae | 1945 | my $res = { rules => [], options => {}, groups => {}, ipset => {} }; |
6158271d | 1946 | |
d1c53b3e DM |
1947 | my $digest = Digest::SHA->new('sha1'); |
1948 | ||
51bae274 | 1949 | while (defined(my $line = <$fh>)) { |
d1c53b3e DM |
1950 | $digest->add($line); |
1951 | ||
51bae274 DM |
1952 | next if $line =~ m/^#/; |
1953 | next if $line =~ m/^\s*$/; | |
1954 | ||
961b4928 DM |
1955 | my $linenr = $fh->input_line_number(); |
1956 | my $prefix = "$filename (line $linenr)"; | |
1957 | ||
c6f5cc88 DM |
1958 | if ($line =~ m/^\[options\]$/i) { |
1959 | $section = 'options'; | |
1960 | next; | |
1961 | } | |
1962 | ||
92e976b3 | 1963 | if ($line =~ m/^\[group\s+(\S+)\]\s*$/i) { |
c6f5cc88 | 1964 | $section = 'groups'; |
92e976b3 | 1965 | $group = lc($1); |
51bae274 DM |
1966 | next; |
1967 | } | |
34cdedfa | 1968 | |
c6f5cc88 DM |
1969 | if ($line =~ m/^\[rules\]$/i) { |
1970 | $section = 'rules'; | |
1971 | next; | |
1972 | } | |
cbb5d6f3 | 1973 | |
936af352 | 1974 | if ($line =~ m/^\[ipset\s+(\S+)\]\s*$/i) { |
34cdedfa AD |
1975 | $section = 'ipset'; |
1976 | $group = lc($1); | |
34cdedfa AD |
1977 | next; |
1978 | } | |
1979 | ||
c6f5cc88 | 1980 | if (!$section) { |
cbb5d6f3 | 1981 | warn "$prefix: skip line - no section\n"; |
51bae274 DM |
1982 | next; |
1983 | } | |
1984 | ||
c6f5cc88 DM |
1985 | if ($section eq 'options') { |
1986 | eval { | |
1987 | my ($opt, $value) = parse_clusterfw_option($line); | |
1988 | $res->{options}->{$opt} = $value; | |
1989 | }; | |
1990 | warn "$prefix: $@" if $@; | |
1991 | } elsif ($section eq 'rules') { | |
1992 | my $rule; | |
1993 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
1994 | if (my $err = $@) { | |
1995 | warn "$prefix: $err"; | |
1996 | next; | |
1997 | } | |
1998 | push @{$res->{$section}}, $rule; | |
1999 | } elsif ($section eq 'groups') { | |
34cdedfa AD |
2000 | my $rule; |
2001 | eval { $rule = parse_fw_rule($line, 0, 0); }; | |
2002 | if (my $err = $@) { | |
2003 | warn "$prefix: $err"; | |
2004 | next; | |
2005 | } | |
3f95d14a | 2006 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a DM |
2007 | } elsif ($section eq 'ipset') { |
2008 | chomp $line; | |
cbb5d6f3 | 2009 | $line =~ m/^(\!)?\s*((\d+)\.(\d+)\.(\d+)\.(\d+)(\/(\d+))?)/; |
2a052ee3 | 2010 | my $nomatch = $1; |
cbb5d6f3 | 2011 | my $ip = $2; |
2a052ee3 AD |
2012 | |
2013 | if(!$ip){ | |
cbb5d6f3 | 2014 | warn "$prefix: $line is not an valid ip address\n"; |
34cdedfa AD |
2015 | next; |
2016 | } | |
2a052ee3 | 2017 | if (!Net::IP->new($ip)) { |
cbb5d6f3 | 2018 | warn "$prefix: $line is not an valid ip address\n"; |
2a052ee3 AD |
2019 | next; |
2020 | } | |
2a052ee3 | 2021 | |
cbb5d6f3 DM |
2022 | if ($nomatch) { |
2023 | if ($feature_ipset_nomatch) { | |
2024 | push @{$res->{$section}->{$group}}, "$ip nomatch"; | |
2025 | } else { | |
2026 | warn "$prefix: ignore $line - nomatch not supported by kernel\n"; | |
2027 | } | |
2028 | } else { | |
2029 | push @{$res->{$section}->{$group}}, $ip; | |
2030 | } | |
51bae274 | 2031 | } |
5e1267a5 DM |
2032 | } |
2033 | ||
d1c53b3e | 2034 | $res->{digest} = $digest->b64digest; |
5e1267a5 DM |
2035 | return $res; |
2036 | } | |
2037 | ||
06320eb0 DM |
2038 | sub run_locked { |
2039 | my ($code, @param) = @_; | |
2040 | ||
2041 | my $timeout = 10; | |
2042 | ||
2043 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
2044 | ||
2045 | die $@ if $@; | |
2046 | ||
2047 | return $res; | |
2048 | } | |
2049 | ||
5e1267a5 DM |
2050 | sub read_local_vm_config { |
2051 | ||
2052 | my $openvz = {}; | |
5e1267a5 DM |
2053 | my $qemu = {}; |
2054 | ||
c8301d63 | 2055 | my $vmdata = { openvz => $openvz, qemu => $qemu }; |
5e1267a5 | 2056 | |
c8301d63 DM |
2057 | my $vmlist = PVE::Cluster::get_vmlist(); |
2058 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
2059 | my $ids = $vmlist->{ids}; | |
2060 | ||
2061 | foreach my $vmid (keys %$ids) { | |
2062 | next if !$vmid; # skip VE0 | |
2063 | my $d = $ids->{$vmid}; | |
2064 | next if !$d->{node} || $d->{node} ne $nodename; | |
2065 | next if !$d->{type}; | |
2066 | if ($d->{type} eq 'openvz') { | |
d9fee004 DM |
2067 | if ($have_pve_manager) { |
2068 | my $cfspath = PVE::OpenVZ::cfs_config_path($vmid); | |
2069 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2070 | $openvz->{$vmid} = $conf; | |
2071 | } | |
c8301d63 DM |
2072 | } |
2073 | } elsif ($d->{type} eq 'qemu') { | |
d9fee004 DM |
2074 | if ($have_qemu_server) { |
2075 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); | |
2076 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2077 | $qemu->{$vmid} = $conf; | |
2078 | } | |
c8301d63 | 2079 | } |
5e1267a5 DM |
2080 | } |
2081 | } | |
d9fee004 | 2082 | |
5e1267a5 DM |
2083 | return $vmdata; |
2084 | }; | |
2085 | ||
e7b35711 DM |
2086 | sub load_vmfw_conf { |
2087 | my ($vmid) = @_; | |
2088 | ||
2089 | my $vmfw_conf = {}; | |
2090 | ||
2091 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
2092 | if (my $fh = IO::File->new($filename, O_RDONLY)) { | |
2093 | $vmfw_conf = parse_vm_fw_rules($filename, $fh); | |
2094 | } | |
2095 | ||
2096 | return $vmfw_conf; | |
2097 | } | |
2098 | ||
464f933e DM |
2099 | my $format_rules = sub { |
2100 | my ($rules, $need_iface) = @_; | |
2101 | ||
2102 | my $raw = ''; | |
2103 | ||
2104 | foreach my $rule (@$rules) { | |
2105 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
2106 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; | |
2107 | $raw .= uc($rule->{type}); | |
7ca36671 DM |
2108 | if ($rule->{macro}) { |
2109 | $raw .= " $rule->{macro}($rule->{action})"; | |
2110 | } else { | |
2111 | $raw .= " " . $rule->{action}; | |
2112 | } | |
464f933e DM |
2113 | $raw .= " " . ($rule->{iface} || '-') if $need_iface; |
2114 | $raw .= " " . ($rule->{source} || '-'); | |
2115 | $raw .= " " . ($rule->{dest} || '-'); | |
2116 | $raw .= " " . ($rule->{proto} || '-'); | |
2117 | $raw .= " " . ($rule->{dport} || '-'); | |
2118 | $raw .= " " . ($rule->{sport} || '-'); | |
cbb5d6f3 | 2119 | $raw .= " # " . encode('utf8', $rule->{comment}) |
464f933e DM |
2120 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; |
2121 | $raw .= "\n"; | |
2122 | } else { | |
2123 | die "implement me '$rule->{type}'"; | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | return $raw; | |
2128 | }; | |
2129 | ||
2130 | my $format_options = sub { | |
68c90e21 DM |
2131 | my ($options) = @_; |
2132 | ||
2133 | my $raw = ''; | |
464f933e DM |
2134 | |
2135 | $raw .= "[OPTIONS]\n\n"; | |
2136 | foreach my $opt (keys %$options) { | |
2137 | $raw .= "$opt: $options->{$opt}\n"; | |
2138 | } | |
2139 | $raw .= "\n"; | |
68c90e21 DM |
2140 | |
2141 | return $raw; | |
464f933e DM |
2142 | }; |
2143 | ||
2144 | sub save_vmfw_conf { | |
2145 | my ($vmid, $vmfw_conf) = @_; | |
2146 | ||
2147 | my $raw = ''; | |
2148 | ||
2149 | my $options = $vmfw_conf->{options}; | |
68c90e21 | 2150 | $raw .= &$format_options($options) if scalar(keys %$options); |
cbb5d6f3 | 2151 | |
464f933e DM |
2152 | my $rules = $vmfw_conf->{rules}; |
2153 | if (scalar(@$rules)) { | |
2154 | $raw .= "[RULES]\n\n"; | |
2155 | $raw .= &$format_rules($rules, 1); | |
2156 | $raw .= "\n"; | |
2157 | } | |
2158 | ||
2159 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
2160 | PVE::Tools::file_set_contents($filename, $raw); | |
2161 | } | |
2162 | ||
6fc63ffd | 2163 | sub read_vm_firewall_configs { |
5e1267a5 | 2164 | my ($vmdata) = @_; |
6fc63ffd | 2165 | my $vmfw_configs = {}; |
c8301d63 | 2166 | |
5e1267a5 | 2167 | foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) { |
e7b35711 DM |
2168 | my $vmfw_conf = load_vmfw_conf($vmid); |
2169 | next if !$vmfw_conf->{options}; # skip if file does not exists | |
2170 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
5e1267a5 DM |
2171 | } |
2172 | ||
6fc63ffd | 2173 | return $vmfw_configs; |
5e1267a5 DM |
2174 | } |
2175 | ||
2d404ffc DM |
2176 | sub get_option_log_level { |
2177 | my ($options, $k) = @_; | |
2178 | ||
2179 | my $v = $options->{$k}; | |
178a63be | 2180 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
2181 | |
2182 | return undef if $v eq '' || $v eq 'nolog'; | |
2183 | ||
2184 | $v = $log_level_hash->{$v} if defined($log_level_hash->{$v}); | |
2185 | ||
2186 | return $v if ($v >= 0) && ($v <= 7); | |
2187 | ||
2188 | warn "unknown log level ($k = '$v')\n"; | |
2189 | ||
2190 | return undef; | |
2191 | } | |
2192 | ||
d8f2505e | 2193 | sub generate_std_chains { |
2d404ffc | 2194 | my ($ruleset, $options) = @_; |
cbb5d6f3 | 2195 | |
2d404ffc DM |
2196 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); |
2197 | ||
2198 | # same as shorewall smurflog. | |
782c4cde DM |
2199 | my $chain = 'PVEFW-smurflog'; |
2200 | ||
2201 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2202 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
2d404ffc DM |
2203 | |
2204 | # same as shorewall logflags action. | |
2205 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde DM |
2206 | $chain = 'PVEFW-logflags'; |
2207 | # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG) | |
2208 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2209 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
d8f2505e DM |
2210 | |
2211 | foreach my $chain (keys %$pve_std_chains) { | |
2212 | ruleset_create_chain($ruleset, $chain); | |
2213 | foreach my $rule (@{$pve_std_chains->{$chain}}) { | |
2214 | if (ref($rule)) { | |
2215 | ruleset_generate_rule($ruleset, $chain, $rule); | |
2216 | } else { | |
2217 | ruleset_addrule($ruleset, $chain, $rule); | |
2218 | } | |
2219 | } | |
2220 | } | |
2221 | } | |
2222 | ||
34cdedfa | 2223 | sub generate_ipset_chains { |
dd7a13fd | 2224 | my ($ipset_ruleset, $fw_conf) = @_; |
34cdedfa | 2225 | |
dd7a13fd | 2226 | foreach my $ipset (keys %{$fw_conf->{ipset}}) { |
4b96e877 | 2227 | generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}); |
34cdedfa AD |
2228 | } |
2229 | } | |
2230 | ||
2231 | sub generate_ipset { | |
2232 | my ($ipset_ruleset, $name, $options) = @_; | |
2233 | ||
dd7a13fd DM |
2234 | my $hashsize = scalar(@$options); |
2235 | if ($hashsize <= 64) { | |
2a052ee3 | 2236 | $hashsize = 64; |
dd7a13fd | 2237 | } else { |
2a052ee3 AD |
2238 | $hashsize = round_powerof2($hashsize); |
2239 | } | |
2240 | ||
dd7a13fd | 2241 | push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize"; |
34cdedfa | 2242 | |
dd7a13fd | 2243 | foreach my $ip (@$options) { |
34cdedfa AD |
2244 | push @{$ipset_ruleset->{$name}}, "add $name $ip"; |
2245 | } | |
2a052ee3 AD |
2246 | } |
2247 | ||
2248 | sub round_powerof2 { | |
dd7a13fd | 2249 | my ($int) = @_; |
2a052ee3 | 2250 | |
dd7a13fd DM |
2251 | $int--; |
2252 | $int |= $int >> $_ foreach (1,2,4,8,16); | |
2253 | return ++$int; | |
34cdedfa AD |
2254 | } |
2255 | ||
6b9f68a2 DM |
2256 | sub save_pvefw_status { |
2257 | my ($status) = @_; | |
2258 | ||
2259 | die "unknown status '$status' - internal error" | |
2260 | if $status !~ m/^(stopped|active)$/; | |
2261 | ||
2262 | mkdir dirname($pve_fw_status_filename); | |
2263 | PVE::Tools::file_set_contents($pve_fw_status_filename, $status); | |
2264 | } | |
2265 | ||
2266 | sub read_pvefw_status { | |
2267 | ||
2268 | my $status = 'unknown'; | |
2269 | ||
2270 | return 'stopped' if ! -f $pve_fw_status_filename; | |
2271 | ||
2272 | eval { | |
2273 | $status = PVE::Tools::file_get_contents($pve_fw_status_filename); | |
2274 | }; | |
2275 | warn $@ if $@; | |
2276 | ||
2277 | return $status; | |
2278 | } | |
2279 | ||
530c005e DM |
2280 | # fixme: move to pve-common PVE::ProcFSTools |
2281 | sub read_proc_net_route { | |
2282 | my $filename = "/proc/net/route"; | |
2283 | ||
2284 | my $res = {}; | |
2285 | ||
2286 | my $fh = IO::File->new ($filename, "r"); | |
2287 | return $res if !$fh; | |
2288 | ||
2289 | my $int_to_quad = sub { | |
2290 | return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0); | |
2291 | }; | |
2292 | ||
2293 | while (defined(my $line = <$fh>)) { | |
2294 | next if $line =~/^Iface\s+Destination/; # skip head | |
2295 | my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8]; | |
2296 | push @{$res->{$iface}}, { | |
2297 | dest => &$int_to_quad(hex($dest)), | |
2298 | gateway => &$int_to_quad(hex($gateway)), | |
2299 | mask => &$int_to_quad(hex($mask)), | |
2300 | metric => $metric, | |
2301 | mtu => $mtu, | |
2302 | }; | |
2303 | } | |
2304 | ||
2305 | return $res; | |
2306 | } | |
2307 | ||
fca39c2c | 2308 | sub load_clusterfw_conf { |
530c005e | 2309 | |
fca39c2c DM |
2310 | my $cluster_conf = {}; |
2311 | if (my $fh = IO::File->new($clusterfw_conf_filename, O_RDONLY)) { | |
c6f5cc88 | 2312 | $cluster_conf = parse_cluster_fw_rules($clusterfw_conf_filename, $fh); |
51bae274 | 2313 | } |
5e1267a5 | 2314 | |
fca39c2c | 2315 | return $cluster_conf; |
e5d76bde DM |
2316 | } |
2317 | ||
fca39c2c DM |
2318 | sub save_clusterfw_conf { |
2319 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
2320 | |
2321 | my $raw = ''; | |
9c7e0858 | 2322 | |
c6f5cc88 | 2323 | my $options = $cluster_conf->{options}; |
68c90e21 | 2324 | $raw .= &$format_options($options) if scalar(keys %$options); |
9c7e0858 | 2325 | |
c6f5cc88 DM |
2326 | # fixme: save ipset |
2327 | ||
2328 | my $rules = $cluster_conf->{rules}; | |
2329 | if (scalar(@$rules)) { | |
2330 | $raw .= "[RULES]\n\n"; | |
63c91681 | 2331 | $raw .= &$format_rules($rules, 1); |
c6f5cc88 DM |
2332 | $raw .= "\n"; |
2333 | } | |
2334 | ||
2335 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
2336 | my $rules = $cluster_conf->{groups}->{$group}; | |
2337 | $raw .= "[group $group]\n\n"; | |
63c91681 | 2338 | $raw .= &$format_rules($rules, 0); |
9c7e0858 DM |
2339 | $raw .= "\n"; |
2340 | } | |
2341 | ||
fca39c2c | 2342 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); |
9c7e0858 DM |
2343 | } |
2344 | ||
8b27beb9 DM |
2345 | sub load_hostfw_conf { |
2346 | ||
2347 | my $hostfw_conf = {}; | |
63c91681 DM |
2348 | if (my $fh = IO::File->new($hostfw_conf_filename, O_RDONLY)) { |
2349 | $hostfw_conf = parse_host_fw_rules($hostfw_conf_filename, $fh); | |
8b27beb9 DM |
2350 | } |
2351 | return $hostfw_conf; | |
2352 | } | |
2353 | ||
63c91681 DM |
2354 | sub save_hostfw_conf { |
2355 | my ($hostfw_conf) = @_; | |
2356 | ||
2357 | my $raw = ''; | |
2358 | ||
2359 | my $options = $hostfw_conf->{options}; | |
68c90e21 | 2360 | $raw .= &$format_options($options) if scalar(keys %$options); |
cbb5d6f3 | 2361 | |
63c91681 DM |
2362 | my $rules = $hostfw_conf->{rules}; |
2363 | if (scalar(@$rules)) { | |
2364 | $raw .= "[RULES]\n\n"; | |
2365 | $raw .= &$format_rules($rules, 1); | |
2366 | $raw .= "\n"; | |
2367 | } | |
2368 | ||
2369 | PVE::Tools::file_set_contents($hostfw_conf_filename, $raw); | |
2370 | } | |
2371 | ||
e5d76bde DM |
2372 | sub compile { |
2373 | my $vmdata = read_local_vm_config(); | |
2374 | my $vmfw_configs = read_vm_firewall_configs($vmdata); | |
2375 | ||
2376 | my $routing_table = read_proc_net_route(); | |
2377 | ||
fca39c2c | 2378 | my $cluster_conf = load_clusterfw_conf(); |
e5d76bde | 2379 | |
34cdedfa | 2380 | my $ipset_ruleset = {}; |
fca39c2c | 2381 | generate_ipset_chains($ipset_ruleset, $cluster_conf); |
34cdedfa | 2382 | |
3fa83edf DM |
2383 | my $ruleset = {}; |
2384 | ||
dec84fcd DM |
2385 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
2386 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 2387 | |
fadb13dd | 2388 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
3fa83edf | 2389 | |
8b27beb9 DM |
2390 | my $hostfw_conf = load_hostfw_conf(); |
2391 | my $hostfw_options = $hostfw_conf->{options} || {}; | |
fadb13dd | 2392 | |
92e976b3 | 2393 | generate_std_chains($ruleset, $hostfw_options); |
fadb13dd | 2394 | |
6d2ab017 | 2395 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 2396 | |
fca39c2c | 2397 | enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable; |
3fa83edf | 2398 | |
6158271d | 2399 | # generate firewall rules for QEMU VMs |
3fa83edf DM |
2400 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
2401 | my $conf = $vmdata->{qemu}->{$vmid}; | |
6fc63ffd | 2402 | my $vmfw_conf = $vmfw_configs->{$vmid}; |
fa9c4a6f DM |
2403 | next if !$vmfw_conf; |
2404 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
3fa83edf DM |
2405 | |
2406 | foreach my $netid (keys %$conf) { | |
2407 | next if $netid !~ m/^net(\d+)$/; | |
2408 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
2409 | next if !$net; | |
2410 | my $iface = "tap${vmid}i$1"; | |
5e1267a5 | 2411 | |
3fa83edf DM |
2412 | my $bridge = $net->{bridge}; |
2413 | next if !$bridge; # fixme: ? | |
2414 | ||
2415 | $bridge .= "v$net->{tag}" if $net->{tag}; | |
2416 | ||
530c005e | 2417 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
3fa83edf | 2418 | |
c29f55c9 | 2419 | my $macaddr = $net->{macaddr}; |
cbb5d6f3 | 2420 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2421 | $vmfw_conf, $vmid, $bridge, 'IN'); |
cbb5d6f3 | 2422 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2423 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
3fa83edf DM |
2424 | } |
2425 | } | |
c8301d63 DM |
2426 | |
2427 | # generate firewall rules for OpenVZ containers | |
2428 | foreach my $vmid (keys %{$vmdata->{openvz}}) { | |
2429 | my $conf = $vmdata->{openvz}->{$vmid}; | |
2430 | ||
2431 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
2432 | next if !$vmfw_conf; | |
2433 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
2434 | ||
2435 | if ($conf->{ip_address} && $conf->{ip_address}->{value}) { | |
2436 | my $ip = $conf->{ip_address}->{value}; | |
fca39c2c DM |
2437 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN'); |
2438 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT'); | |
c8301d63 DM |
2439 | } |
2440 | ||
2441 | if ($conf->{netif} && $conf->{netif}->{value}) { | |
2442 | my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value}); | |
c8301d63 DM |
2443 | foreach my $netid (keys %$netif) { |
2444 | my $d = $netif->{$netid}; | |
2445 | my $bridge = $d->{bridge}; | |
2446 | if (!$bridge) { | |
2447 | warn "no bridge device for CT $vmid iface '$netid'\n"; | |
2448 | next; # fixme? | |
2449 | } | |
cbb5d6f3 | 2450 | |
530c005e DM |
2451 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
2452 | ||
12d0f130 | 2453 | my $macaddr = $d->{mac}; |
c8301d63 | 2454 | my $iface = $d->{host_ifname}; |
cbb5d6f3 | 2455 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2456 | $vmfw_conf, $vmid, $bridge, 'IN'); |
cbb5d6f3 | 2457 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2458 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
c8301d63 DM |
2459 | } |
2460 | } | |
2461 | } | |
c0413e35 | 2462 | |
cc10e5d7 | 2463 | if($hostfw_options->{optimize}){ |
da6fc60b | 2464 | |
e9d9a73e | 2465 | my $accept = ruleset_chain_exist($ruleset, "PVEFW-IPS") ? "PVEFW-IPS" : "ACCEPT"; |
da6fc60b | 2466 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
cc10e5d7 AD |
2467 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP"); |
2468 | } | |
2469 | ||
eba0fb64 DM |
2470 | # fixme: what log level should we use here? |
2471 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
2472 | ||
c98c037d DM |
2473 | # fixme: should we really block inter-bridge traffic? |
2474 | ||
2475 | # always allow traffic from containers? | |
2476 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN"); | |
2477 | ||
eba0fb64 | 2478 | # disable interbridge routing |
cbb5d6f3 | 2479 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop"); |
eba0fb64 | 2480 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop"); |
cbb5d6f3 DM |
2481 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+"); |
2482 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+"); | |
2483 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP"); | |
eba0fb64 DM |
2484 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP"); |
2485 | ||
34cdedfa | 2486 | return wantarray ? ($ruleset, $hostfw_conf, $ipset_ruleset) : $ruleset; |
3fa83edf DM |
2487 | } |
2488 | ||
2489 | sub get_ruleset_status { | |
4bd0a9c4 | 2490 | my ($ruleset, $active_chains, $digest_fn, $verbose) = @_; |
3fa83edf DM |
2491 | |
2492 | my $statushash = {}; | |
2493 | ||
2494 | foreach my $chain (sort keys %$ruleset) { | |
4bd0a9c4 | 2495 | my $sig = &$digest_fn($ruleset->{$chain}); |
9bf7d929 | 2496 | |
3fa83edf DM |
2497 | $statushash->{$chain}->{sig} = $sig; |
2498 | ||
2499 | my $oldsig = $active_chains->{$chain}; | |
2500 | if (!defined($oldsig)) { | |
2501 | $statushash->{$chain}->{action} = 'create'; | |
2502 | } else { | |
2503 | if ($oldsig eq $sig) { | |
2504 | $statushash->{$chain}->{action} = 'exists'; | |
2505 | } else { | |
2506 | $statushash->{$chain}->{action} = 'update'; | |
2507 | } | |
2508 | } | |
2509 | print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose; | |
2510 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2511 | print "\t$cmd\n" if $verbose; | |
2512 | } | |
2513 | } | |
2514 | ||
2515 | foreach my $chain (sort keys %$active_chains) { | |
2516 | if (!defined($ruleset->{$chain})) { | |
2517 | my $sig = $active_chains->{$chain}; | |
2518 | $statushash->{$chain}->{action} = 'delete'; | |
2519 | $statushash->{$chain}->{sig} = $sig; | |
2520 | print "delete $chain ($sig)\n" if $verbose; | |
2521 | } | |
6158271d | 2522 | } |
2a052ee3 | 2523 | |
3fa83edf DM |
2524 | return $statushash; |
2525 | } | |
2526 | ||
3fa83edf DM |
2527 | sub print_sig_rule { |
2528 | my ($chain, $sig) = @_; | |
2529 | ||
09d5f68e DM |
2530 | # We just use this to store a SHA1 checksum used to detect changes |
2531 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
2532 | } |
2533 | ||
df7cb349 | 2534 | sub get_ruleset_cmdlist { |
a84f4d96 | 2535 | my ($ruleset, $verbose) = @_; |
3fa83edf | 2536 | |
3fa83edf | 2537 | my $cmdlist = "*filter\n"; # we pass this to iptables-restore; |
cbb5d6f3 | 2538 | |
4bd0a9c4 DM |
2539 | my ($active_chains, $hooks) = iptables_get_chains(); |
2540 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose); | |
3fa83edf DM |
2541 | |
2542 | # create missing chains first | |
2543 | foreach my $chain (sort keys %$ruleset) { | |
2544 | my $stat = $statushash->{$chain}; | |
2545 | die "internal error" if !$stat; | |
2546 | next if $stat->{action} ne 'create'; | |
886aba9c | 2547 | |
3fa83edf DM |
2548 | $cmdlist .= ":$chain - [0:0]\n"; |
2549 | } | |
2550 | ||
4bd0a9c4 DM |
2551 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { |
2552 | if (!$hooks->{$h}) { | |
2553 | $cmdlist .= "-A $h -j PVEFW-$h\n"; | |
2554 | } | |
3fa83edf DM |
2555 | } |
2556 | ||
2557 | foreach my $chain (sort keys %$ruleset) { | |
2558 | my $stat = $statushash->{$chain}; | |
2559 | die "internal error" if !$stat; | |
2560 | ||
2561 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
2562 | $cmdlist .= "-F $chain\n"; | |
2563 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2564 | $cmdlist .= "$cmd\n"; | |
2565 | } | |
2566 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
2567 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 2568 | die "internal error"; # this should not happen |
3fa83edf DM |
2569 | } elsif ($stat->{action} eq 'exists') { |
2570 | # do nothing | |
2571 | } else { | |
2572 | die "internal error - unknown status '$stat->{action}'"; | |
2573 | } | |
2574 | } | |
2575 | ||
f5d28682 DM |
2576 | foreach my $chain (keys %$statushash) { |
2577 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2578 | $cmdlist .= "-F $chain\n"; | |
2579 | } | |
2580 | foreach my $chain (keys %$statushash) { | |
2581 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
2582 | next if $chain eq 'PVEFW-INPUT'; |
2583 | next if $chain eq 'PVEFW-OUTPUT'; | |
2584 | next if $chain eq 'PVEFW-FORWARD'; | |
f5d28682 DM |
2585 | $cmdlist .= "-X $chain\n"; |
2586 | } | |
2587 | ||
3f95d14a | 2588 | my $changes = $cmdlist ne "*filter\n" ? 1 : 0; |
4bd0a9c4 | 2589 | |
3fa83edf DM |
2590 | $cmdlist .= "COMMIT\n"; |
2591 | ||
3f95d14a | 2592 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
2593 | } |
2594 | ||
34cdedfa | 2595 | sub get_ipset_cmdlist { |
dd7a13fd | 2596 | my ($ruleset, $verbose) = @_; |
34cdedfa AD |
2597 | |
2598 | my $cmdlist = ""; | |
2599 | ||
dd7a13fd DM |
2600 | my $delete_cmdlist = ""; |
2601 | ||
4bd0a9c4 DM |
2602 | my $active_chains = ipset_get_chains(); |
2603 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose); | |
34cdedfa | 2604 | |
dd7a13fd DM |
2605 | foreach my $chain (sort keys %$ruleset) { |
2606 | my $stat = $statushash->{$chain}; | |
2607 | die "internal error" if !$stat; | |
2a052ee3 | 2608 | |
dd7a13fd DM |
2609 | if ($stat->{action} eq 'create') { |
2610 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
34cdedfa AD |
2611 | $cmdlist .= "$cmd\n"; |
2612 | } | |
dd7a13fd | 2613 | } |
34cdedfa | 2614 | |
dd7a13fd DM |
2615 | if ($stat->{action} eq 'update') { |
2616 | my $chain_swap = $chain."_swap"; | |
cbb5d6f3 | 2617 | |
dd7a13fd DM |
2618 | foreach my $cmd (@{$ruleset->{$chain}}) { |
2619 | $cmd =~ s/$chain/$chain_swap/; | |
2620 | $cmdlist .= "$cmd\n"; | |
34cdedfa | 2621 | } |
dd7a13fd DM |
2622 | $cmdlist .= "swap $chain_swap $chain\n"; |
2623 | $cmdlist .= "flush $chain_swap\n"; | |
2624 | $cmdlist .= "destroy $chain_swap\n"; | |
2a052ee3 | 2625 | } |
34cdedfa | 2626 | |
dd7a13fd | 2627 | } |
3f95d14a | 2628 | |
dd7a13fd DM |
2629 | foreach my $chain (keys %$statushash) { |
2630 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2a052ee3 | 2631 | |
dd7a13fd DM |
2632 | $delete_cmdlist .= "flush $chain\n"; |
2633 | $delete_cmdlist .= "destroy $chain\n"; | |
34cdedfa AD |
2634 | } |
2635 | ||
dd7a13fd | 2636 | my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0; |
cbb5d6f3 | 2637 | |
dd7a13fd | 2638 | return ($cmdlist, $delete_cmdlist, $changes); |
34cdedfa AD |
2639 | } |
2640 | ||
6b9f68a2 | 2641 | sub apply_ruleset { |
34cdedfa | 2642 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_; |
6b9f68a2 DM |
2643 | |
2644 | enable_bridge_firewall(); | |
2645 | ||
edb75ba9 DM |
2646 | update_nf_conntrack_max($hostfw_conf); |
2647 | ||
cbb5d6f3 | 2648 | my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) = |
81a0bf43 | 2649 | get_ipset_cmdlist($ipset_ruleset, undef, $verbose); |
6b9f68a2 | 2650 | |
81a0bf43 | 2651 | my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose); |
2a052ee3 | 2652 | |
81a0bf43 DM |
2653 | if ($verbose) { |
2654 | if ($ipset_changes) { | |
2655 | print "ipset changes:\n"; | |
2656 | print $ipset_create_cmdlist if $ipset_create_cmdlist; | |
2657 | print $ipset_delete_cmdlist if $ipset_delete_cmdlist; | |
2658 | } | |
3f95d14a | 2659 | |
81a0bf43 DM |
2660 | if ($changes) { |
2661 | print "iptables changes:\n"; | |
2662 | print $cmdlist; | |
2663 | } | |
2664 | } | |
3fa83edf | 2665 | |
2a052ee3 | 2666 | ipset_restore_cmdlist($ipset_create_cmdlist); |
34cdedfa | 2667 | |
3fa83edf DM |
2668 | iptables_restore_cmdlist($cmdlist); |
2669 | ||
dd7a13fd | 2670 | ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist; |
2a052ee3 | 2671 | |
6158271d | 2672 | # test: re-read status and check if everything is up to date |
4bd0a9c4 | 2673 | my $active_chains = iptables_get_chains(); |
81a0bf43 | 2674 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0); |
3fa83edf DM |
2675 | |
2676 | my $errors; | |
2677 | foreach my $chain (sort keys %$ruleset) { | |
2678 | my $stat = $statushash->{$chain}; | |
2679 | if ($stat->{action} ne 'exists') { | |
2680 | warn "unable to update chain '$chain'\n"; | |
2681 | $errors = 1; | |
2682 | } | |
2683 | } | |
b6360c3f | 2684 | |
3fa83edf | 2685 | die "unable to apply firewall changes\n" if $errors; |
b6360c3f DM |
2686 | } |
2687 | ||
490cdead DM |
2688 | sub update_nf_conntrack_max { |
2689 | my ($hostfw_conf) = @_; | |
2690 | ||
2691 | my $max = 65536; # reasonable default | |
2692 | ||
2693 | my $options = $hostfw_conf->{options} || {}; | |
2694 | ||
2695 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
2696 | $max = $options->{nf_conntrack_max}; | |
2697 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
2698 | } | |
2699 | ||
2700 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
2701 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
2702 | ||
2703 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
2704 | ||
2705 | if ($current != $max) { | |
2706 | my $hashsize = int($max/4); | |
2707 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
2708 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
2709 | } | |
2710 | } | |
2711 | ||
c4a2e5ae DM |
2712 | sub remove_pvefw_chains { |
2713 | ||
2714 | my ($chash, $hooks) = iptables_get_chains(); | |
2715 | my $cmdlist = "*filter\n"; | |
2716 | ||
2717 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { | |
2718 | if ($hooks->{$h}) { | |
2719 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
2720 | } | |
2721 | } | |
cbb5d6f3 | 2722 | |
c4a2e5ae DM |
2723 | foreach my $chain (keys %$chash) { |
2724 | $cmdlist .= "-F $chain\n"; | |
2725 | } | |
2726 | ||
2727 | foreach my $chain (keys %$chash) { | |
2728 | $cmdlist .= "-X $chain\n"; | |
2729 | } | |
2730 | $cmdlist .= "COMMIT\n"; | |
2731 | ||
2732 | iptables_restore_cmdlist($cmdlist); | |
2733 | } | |
2734 | ||
6b9f68a2 DM |
2735 | sub update { |
2736 | my ($start, $verbose) = @_; | |
2737 | ||
2738 | my $code = sub { | |
2739 | my $status = read_pvefw_status(); | |
2740 | ||
3f95d14a | 2741 | my ($ruleset, $hostfw_conf, $ipset_ruleset) = compile(); |
490cdead | 2742 | |
6b9f68a2 DM |
2743 | if ($start || $status eq 'active') { |
2744 | ||
2745 | save_pvefw_status('active') if ($status ne 'active'); | |
2746 | ||
34cdedfa | 2747 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose); |
6b9f68a2 DM |
2748 | } else { |
2749 | print "Firewall not active (status = $status)\n" if $verbose; | |
2750 | } | |
2751 | }; | |
2752 | ||
2753 | run_locked($code); | |
2754 | } | |
2755 | ||
2756 | ||
b6360c3f | 2757 | 1; |