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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; |
fcba0beb | 697 | foreach my $item (split(/,/, $str)) { |
7ca36671 DM |
698 | $count++; |
699 | if ($item =~ m/^(\d+):(\d+)$/) { | |
700 | my ($port1, $port2) = ($1, $2); | |
701 | die "invalid port '$port1'\n" if $port1 > 65535; | |
702 | die "invalid port '$port2'\n" if $port2 > 65535; | |
703 | } elsif ($item =~ m/^(\d+)$/) { | |
704 | my $port = $1; | |
705 | die "invalid port '$port'\n" if $port > 65535; | |
706 | } else { | |
707 | die "invalid port '$item'\n" if !$services->{byname}->{$item}; | |
fcba0beb DM |
708 | } |
709 | } | |
710 | ||
7ca36671 | 711 | return $count; |
fcba0beb DM |
712 | } |
713 | ||
54cd19a8 DM |
714 | PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec); |
715 | sub pve_fw_verify_port_spec { | |
716 | my ($portstr) = @_; | |
717 | ||
7ca36671 | 718 | parse_port_name_number_or_range($portstr); |
54cd19a8 DM |
719 | |
720 | return $portstr; | |
721 | } | |
722 | ||
723 | PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec); | |
724 | sub pve_fw_verify_v4addr_spec { | |
725 | my ($list) = @_; | |
726 | ||
727 | parse_address_list($list); | |
728 | ||
729 | return $list; | |
730 | } | |
731 | ||
732 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
733 | sub pve_fw_verify_protocol_spec { | |
734 | my ($proto) = @_; | |
735 | ||
736 | my $protocols = get_etc_protocols(); | |
737 | ||
738 | die "unknown protocol '$proto'\n" if $proto && | |
739 | !(defined($protocols->{byname}->{$proto}) || | |
740 | defined($protocols->{byid}->{$proto})); | |
741 | ||
742 | return $proto; | |
743 | } | |
744 | ||
745 | ||
d1c53b3e | 746 | # helper function for API |
d1c53b3e | 747 | |
9c7e0858 DM |
748 | my $rule_properties = { |
749 | pos => { | |
750 | description => "Update rule at position <pos>.", | |
751 | type => 'integer', | |
752 | minimum => 0, | |
753 | optional => 1, | |
754 | }, | |
755 | digest => { | |
756 | type => 'string', | |
757 | optional => 1, | |
54cd19a8 DM |
758 | maxLength => 27, |
759 | minLength => 27, | |
9c7e0858 DM |
760 | }, |
761 | type => { | |
762 | type => 'string', | |
763 | optional => 1, | |
764 | enum => ['in', 'out', 'group'], | |
765 | }, | |
766 | action => { | |
767 | type => 'string', | |
768 | optional => 1, | |
54cd19a8 | 769 | enum => ['ACCEPT', 'DROP', 'REJECT'], |
9c7e0858 | 770 | }, |
e5076eee DM |
771 | macro => { |
772 | type => 'string', | |
773 | optional => 1, | |
54cd19a8 | 774 | maxLength => 128, |
e5076eee | 775 | }, |
54cd19a8 | 776 | iface => get_standard_option('pve-iface', { optional => 1 }), |
9c7e0858 | 777 | source => { |
54cd19a8 | 778 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
779 | optional => 1, |
780 | }, | |
781 | dest => { | |
54cd19a8 | 782 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
783 | optional => 1, |
784 | }, | |
785 | proto => { | |
54cd19a8 | 786 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
787 | optional => 1, |
788 | }, | |
789 | enable => { | |
790 | type => 'boolean', | |
791 | optional => 1, | |
792 | }, | |
793 | sport => { | |
54cd19a8 | 794 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
795 | optional => 1, |
796 | }, | |
797 | dport => { | |
54cd19a8 | 798 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
799 | optional => 1, |
800 | }, | |
801 | comment => { | |
802 | type => 'string', | |
803 | optional => 1, | |
804 | }, | |
805 | }; | |
806 | ||
ce36326d DM |
807 | sub cleanup_fw_rule { |
808 | my ($rule, $digest, $pos) = @_; | |
809 | ||
810 | my $r = {}; | |
811 | ||
812 | foreach my $k (keys %$rule) { | |
813 | next if !$rule_properties->{$k}; | |
814 | my $v = $rule->{$k}; | |
815 | next if !defined($v); | |
816 | $r->{$k} = $v; | |
817 | $r->{digest} = $digest; | |
818 | $r->{pos} = $pos; | |
819 | } | |
820 | ||
821 | return $r; | |
822 | } | |
823 | ||
9c7e0858 DM |
824 | sub add_rule_properties { |
825 | my ($properties) = @_; | |
826 | ||
827 | foreach my $k (keys %$rule_properties) { | |
3655b01f DM |
828 | my $h = $rule_properties->{$k}; |
829 | # copy data, so that we can modify later without side effects | |
830 | foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; } | |
9c7e0858 | 831 | } |
cbb5d6f3 | 832 | |
9c7e0858 DM |
833 | return $properties; |
834 | } | |
835 | ||
5b7974df DM |
836 | sub delete_rule_properties { |
837 | my ($rule, $delete_str) = @_; | |
838 | ||
839 | foreach my $opt (PVE::Tools::split_list($delete_str)) { | |
840 | raise_param_exc({ 'delete' => "no such property ('$opt')"}) | |
841 | if !defined($rule_properties->{$opt}); | |
842 | raise_param_exc({ 'delete' => "unable to delete required property '$opt'"}) | |
843 | if $opt eq 'type' || $opt eq 'action'; | |
844 | delete $rule->{$opt}; | |
845 | } | |
846 | ||
847 | return $rule; | |
848 | } | |
849 | ||
7ca36671 DM |
850 | sub verify_rule { |
851 | my ($rule, $allow_groups) = @_; | |
852 | ||
853 | my $type = $rule->{type}; | |
854 | ||
855 | raise_param_exc({ type => "missing property"}) if !$type; | |
856 | raise_param_exc({ action => "missing property"}) if !$rule->{action}; | |
857 | ||
858 | if ($type eq 'in' || $type eq 'out') { | |
859 | raise_param_exc({ action => "unknown action '$rule->{action}'"}) | |
860 | if $rule->{action} !~ m/^(ACCEPT|DROP|REJECT)$/; | |
861 | } elsif ($type eq 'group') { | |
862 | raise_param_exc({ type => "security groups not allowed"}) | |
863 | if !$allow_groups; | |
864 | raise_param_exc({ action => "invalid characters in security group name"}) | |
865 | if $rule->{action} !~ m/^[A-Za-z0-9_\-]+$/; | |
866 | } else { | |
867 | raise_param_exc({ type => "unknown rule type '$type'"}); | |
868 | } | |
869 | ||
870 | # fixme: verify $rule->{iface}? | |
871 | ||
872 | if ($rule->{macro}) { | |
873 | my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}; | |
874 | raise_param_exc({ macro => "unknown macro '$rule->{macro}'"}) if !$preferred_name; | |
875 | $rule->{macro} = $preferred_name; | |
876 | } | |
877 | ||
878 | if ($rule->{dport}) { | |
879 | eval { parse_port_name_number_or_range($rule->{dport}); }; | |
880 | raise_param_exc({ dport => $@ }) if $@; | |
881 | } | |
882 | ||
883 | if ($rule->{sport}) { | |
884 | eval { parse_port_name_number_or_range($rule->{sport}); }; | |
885 | raise_param_exc({ sport => $@ }) if $@; | |
886 | } | |
887 | ||
888 | if ($rule->{source}) { | |
889 | eval { parse_address_list($rule->{source}); }; | |
890 | raise_param_exc({ source => $@ }) if $@; | |
891 | } | |
892 | ||
893 | if ($rule->{dest}) { | |
894 | eval { parse_address_list($rule->{dest}); }; | |
895 | raise_param_exc({ dest => $@ }) if $@; | |
896 | } | |
897 | ||
898 | return $rule; | |
899 | } | |
900 | ||
9c7e0858 DM |
901 | sub copy_rule_data { |
902 | my ($rule, $param) = @_; | |
903 | ||
904 | foreach my $k (keys %$rule_properties) { | |
905 | if (defined(my $v = $param->{$k})) { | |
906 | if ($v eq '' || $v eq '-') { | |
907 | delete $rule->{$k}; | |
908 | } else { | |
909 | $rule->{$k} = $v; | |
910 | } | |
911 | } else { | |
912 | delete $rule->{$k}; | |
913 | } | |
914 | } | |
7ca36671 DM |
915 | |
916 | # verify rule now | |
917 | ||
9c7e0858 DM |
918 | return $rule; |
919 | } | |
920 | ||
921 | # core functions | |
780bcc0f DM |
922 | my $bridge_firewall_enabled = 0; |
923 | ||
924 | sub enable_bridge_firewall { | |
925 | ||
926 | return if $bridge_firewall_enabled; # only once | |
927 | ||
5f0a912c DM |
928 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
929 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 930 | |
6a8a75db DM |
931 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
932 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
933 | ||
780bcc0f DM |
934 | $bridge_firewall_enabled = 1; |
935 | } | |
936 | ||
8cebfa6f | 937 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 938 | |
b16e818e DM |
939 | sub iptables_restore_cmdlist { |
940 | my ($cmdlist) = @_; | |
3a616aa0 | 941 | |
3fa83edf | 942 | run_command("/sbin/iptables-restore -n", input => $cmdlist); |
3a616aa0 AD |
943 | } |
944 | ||
34cdedfa AD |
945 | sub ipset_restore_cmdlist { |
946 | my ($cmdlist) = @_; | |
947 | ||
dd7a13fd | 948 | run_command("/usr/sbin/ipset restore", input => $cmdlist); |
34cdedfa AD |
949 | } |
950 | ||
de2a57cd DM |
951 | sub iptables_get_chains { |
952 | ||
953 | my $res = {}; | |
954 | ||
955 | # check what chains we want to track | |
956 | my $is_pvefw_chain = sub { | |
957 | my $name = shift; | |
958 | ||
dec84fcd DM |
959 | return 1 if $name =~ m/^PVEFW-\S+$/; |
960 | ||
de2a57cd | 961 | return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/; |
954f24b1 DM |
962 | |
963 | return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable | |
964 | ||
9e15114a DM |
965 | return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/; |
966 | ||
da6fc60b | 967 | return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/; |
f50656c2 | 968 | return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/; |
de2a57cd DM |
969 | |
970 | return undef; | |
971 | }; | |
972 | ||
973 | my $table = ''; | |
974 | ||
c4a2e5ae DM |
975 | my $hooks = {}; |
976 | ||
de2a57cd DM |
977 | my $parser = sub { |
978 | my $line = shift; | |
979 | ||
980 | return if $line =~ m/^#/; | |
981 | return if $line =~ m/^\s*$/; | |
982 | ||
983 | if ($line =~ m/^\*(\S+)$/) { | |
984 | $table = $1; | |
985 | return; | |
986 | } | |
987 | ||
988 | return if $table ne 'filter'; | |
989 | ||
990 | if ($line =~ m/^:(\S+)\s/) { | |
991 | my $chain = $1; | |
992 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 993 | $res->{$chain} = "unknown"; |
09d5f68e | 994 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 995 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 996 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 997 | $res->{$chain} = $sig; |
c4a2e5ae DM |
998 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) { |
999 | $hooks->{$1} = 1; | |
de2a57cd DM |
1000 | } else { |
1001 | # simply ignore the rest | |
1002 | return; | |
1003 | } | |
1004 | }; | |
1005 | ||
1006 | run_command("/sbin/iptables-save", outfunc => $parser); | |
1007 | ||
c4a2e5ae | 1008 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
1009 | } |
1010 | ||
9bf7d929 DM |
1011 | sub iptables_chain_digest { |
1012 | my ($rules) = @_; | |
1013 | my $digest = Digest::SHA->new('sha1'); | |
1014 | foreach my $rule (@$rules) { # order is important | |
1015 | $digest->add($rule); | |
1016 | } | |
1017 | return $digest->b64digest; | |
1018 | } | |
1019 | ||
3f95d14a DM |
1020 | sub ipset_chain_digest { |
1021 | my ($rules) = @_; | |
4bd0a9c4 | 1022 | |
3f95d14a DM |
1023 | my $digest = Digest::SHA->new('sha1'); |
1024 | foreach my $rule (sort @$rules) { # note: sorted | |
1025 | $digest->add($rule); | |
1026 | } | |
1027 | return $digest->b64digest; | |
1028 | } | |
1029 | ||
34cdedfa AD |
1030 | sub ipset_get_chains { |
1031 | ||
1032 | my $res = {}; | |
1033 | my $chains = {}; | |
1034 | ||
1035 | my $parser = sub { | |
1036 | my $line = shift; | |
1037 | ||
1038 | return if $line =~ m/^#/; | |
1039 | return if $line =~ m/^\s*$/; | |
4b96e877 | 1040 | if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) { |
81a0bf43 DM |
1041 | my $chain = $1; |
1042 | $line =~ s/\s+$//; # delete trailing white space | |
1043 | push @{$chains->{$chain}}, $line; | |
34cdedfa AD |
1044 | } else { |
1045 | # simply ignore the rest | |
1046 | return; | |
1047 | } | |
1048 | }; | |
1049 | ||
3f95d14a | 1050 | run_command("/usr/sbin/ipset save", outfunc => $parser); |
34cdedfa | 1051 | |
3f95d14a DM |
1052 | # compute digest for each chain |
1053 | foreach my $chain (keys %$chains) { | |
1054 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
1055 | } |
1056 | ||
1057 | return $res; | |
1058 | } | |
1059 | ||
eba0fb64 | 1060 | sub ruleset_generate_cmdstr { |
ba791b1f | 1061 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_; |
3a616aa0 | 1062 | |
00bb4391 | 1063 | return if defined($rule->{enable}) && !$rule->{enable}; |
11bac5c2 | 1064 | |
e5076eee DM |
1065 | die "unable to emit macro - internal error" if $rule->{macro}; # should not happen |
1066 | ||
1067 | my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0; | |
1068 | my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0; | |
e5076eee | 1069 | |
41524a58 | 1070 | my @cmd = (); |
3a616aa0 | 1071 | |
eba0fb64 DM |
1072 | push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in}; |
1073 | push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
1074 | ||
ba791b1f AD |
1075 | my $source = $rule->{source}; |
1076 | my $dest = $rule->{dest}; | |
1077 | ||
cbb5d6f3 DM |
1078 | if ($source) { |
1079 | if ($source =~ m/^(\+)(\S+)$/) { | |
936af352 | 1080 | die "no such ipset $2" if !$cluster_conf->{ipset}->{$2}; |
4b96e877 | 1081 | push @cmd, "-m set --match-set PVEFW-$2 src"; |
ba791b1f | 1082 | |
ac8242cc | 1083 | } elsif ($source =~ m/\-/){ |
ba791b1f AD |
1084 | push @cmd, "-m iprange --src-range $source"; |
1085 | ||
cbb5d6f3 | 1086 | } else { |
ba791b1f AD |
1087 | push @cmd, "-s $source"; |
1088 | } | |
1089 | } | |
1090 | ||
cbb5d6f3 DM |
1091 | if ($dest) { |
1092 | if ($dest =~ m/^(\+)(\S+)$/) { | |
936af352 | 1093 | die "no such ipset $2" if !$cluster_conf->{ipset}->{$2}; |
4b96e877 | 1094 | push @cmd, "-m set --match-set PVEFW-$2 dst"; |
ba791b1f | 1095 | |
cbb5d6f3 | 1096 | } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){ |
ba791b1f AD |
1097 | push @cmd, "-m iprange --dst-range $dest"; |
1098 | ||
cbb5d6f3 | 1099 | } else { |
ba791b1f AD |
1100 | push @cmd, "-s $dest"; |
1101 | } | |
1102 | } | |
4b586518 | 1103 | |
181390b0 | 1104 | if ($rule->{proto}) { |
41524a58 | 1105 | push @cmd, "-p $rule->{proto}"; |
e3a1d391 | 1106 | |
181390b0 | 1107 | my $multiport = 0; |
e5076eee DM |
1108 | $multiport++ if $nbdport > 1; |
1109 | $multiport++ if $nbsport > 1; | |
e3a1d391 | 1110 | |
41524a58 | 1111 | push @cmd, "--match multiport" if $multiport; |
4b586518 | 1112 | |
cbb5d6f3 | 1113 | die "multiport: option '--sports' cannot be used together with '--dports'\n" |
181390b0 DM |
1114 | if ($multiport == 2) && ($rule->{dport} ne $rule->{sport}); |
1115 | ||
1116 | if ($rule->{dport}) { | |
1117 | if ($rule->{proto} && $rule->{proto} eq 'icmp') { | |
1118 | # Note: we use dport to store --icmp-type | |
1119 | die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}}); | |
41524a58 | 1120 | push @cmd, "-m icmp --icmp-type $rule->{dport}"; |
181390b0 | 1121 | } else { |
e5076eee | 1122 | if ($nbdport > 1) { |
181390b0 | 1123 | if ($multiport == 2) { |
41524a58 | 1124 | push @cmd, "--ports $rule->{dport}"; |
181390b0 | 1125 | } else { |
41524a58 | 1126 | push @cmd, "--dports $rule->{dport}"; |
181390b0 | 1127 | } |
e3a1d391 | 1128 | } else { |
41524a58 | 1129 | push @cmd, "--dport $rule->{dport}"; |
e3a1d391 | 1130 | } |
4b586518 DM |
1131 | } |
1132 | } | |
4b586518 | 1133 | |
181390b0 | 1134 | if ($rule->{sport}) { |
e5076eee | 1135 | if ($nbsport > 1) { |
41524a58 | 1136 | push @cmd, "--sports $rule->{sport}" if $multiport != 2; |
181390b0 | 1137 | } else { |
41524a58 | 1138 | push @cmd, "--sport $rule->{sport}"; |
181390b0 | 1139 | } |
4b586518 | 1140 | } |
181390b0 DM |
1141 | } elsif ($rule->{dport} || $rule->{sport}) { |
1142 | warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport}; | |
1143 | warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport}; | |
4b586518 DM |
1144 | } |
1145 | ||
41524a58 | 1146 | push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; |
4e6112f9 DM |
1147 | |
1148 | if (my $action = $rule->{action}) { | |
cbb5d6f3 | 1149 | $action = $actions->{$action} if defined($actions->{$action}); |
4e6112f9 | 1150 | $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK'; |
41524a58 | 1151 | push @cmd, $goto ? "-g $action" : "-j $action"; |
181390b0 | 1152 | } |
3a616aa0 | 1153 | |
eba0fb64 DM |
1154 | return scalar(@cmd) ? join(' ', @cmd) : undef; |
1155 | } | |
1156 | ||
e5076eee DM |
1157 | my $apply_macro = sub { |
1158 | my ($macro_name, $param) = @_; | |
1159 | ||
1160 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
1161 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
1162 | ||
1163 | my $rules = []; | |
1164 | ||
1165 | foreach my $templ (@$macro_rules) { | |
1166 | my $rule = {}; | |
1167 | my $param_used = {}; | |
1168 | foreach my $k (keys %$templ) { | |
1169 | my $v = $templ->{$k}; | |
1170 | if ($v eq 'PARAM') { | |
1171 | $v = $param->{$k}; | |
1172 | $param_used->{$k} = 1; | |
1173 | } elsif ($v eq 'DEST') { | |
1174 | $v = $param->{dest}; | |
1175 | $param_used->{dest} = 1; | |
1176 | } elsif ($v eq 'SOURCE') { | |
1177 | $v = $param->{source}; | |
1178 | $param_used->{source} = 1; | |
1179 | } | |
1180 | ||
1181 | die "missing parameter '$k' in macro '$macro_name'\n" if !defined($v); | |
1182 | $rule->{$k} = $v; | |
1183 | } | |
1184 | foreach my $k (keys %$param) { | |
1185 | next if $k eq 'macro'; | |
1186 | next if !defined($param->{$k}); | |
1187 | next if $param_used->{$k}; | |
1188 | if (defined($rule->{$k})) { | |
1189 | die "parameter '$k' already define in macro (value = '$rule->{$k}')\n" | |
1190 | if $rule->{$k} ne $param->{$k}; | |
1191 | } else { | |
1192 | $rule->{$k} = $param->{$k}; | |
1193 | } | |
1194 | } | |
1195 | push @$rules, $rule; | |
1196 | } | |
1197 | ||
1198 | return $rules; | |
1199 | }; | |
1200 | ||
eba0fb64 | 1201 | sub ruleset_generate_rule { |
ba791b1f | 1202 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_; |
eba0fb64 | 1203 | |
e5076eee DM |
1204 | my $rules; |
1205 | ||
1206 | if ($rule->{macro}) { | |
1207 | $rules = &$apply_macro($rule->{macro}, $rule); | |
1208 | } else { | |
1209 | $rules = [ $rule ]; | |
1210 | } | |
1211 | ||
cbb5d6f3 | 1212 | foreach my $tmp (@$rules) { |
ba791b1f | 1213 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) { |
e5076eee DM |
1214 | ruleset_addrule($ruleset, $chain, $cmdstr); |
1215 | } | |
41524a58 | 1216 | } |
3fa83edf | 1217 | } |
0f168d7b | 1218 | |
eba0fb64 DM |
1219 | sub ruleset_generate_rule_insert { |
1220 | my ($ruleset, $chain, $rule, $actions, $goto) = @_; | |
1221 | ||
e5076eee DM |
1222 | die "implement me" if $rule->{macro}; # not implemented, because not needed so far |
1223 | ||
eba0fb64 DM |
1224 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) { |
1225 | ruleset_insertrule($ruleset, $chain, $cmdstr); | |
1226 | } | |
1227 | } | |
3fa83edf DM |
1228 | |
1229 | sub ruleset_create_chain { | |
1230 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1231 | |
d050c724 | 1232 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 1233 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 1234 | |
3fa83edf DM |
1235 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
1236 | ||
1237 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
1238 | } |
1239 | ||
3fa83edf DM |
1240 | sub ruleset_chain_exist { |
1241 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1242 | |
3fa83edf DM |
1243 | return $ruleset->{$chain} ? 1 : undef; |
1244 | } | |
3a616aa0 | 1245 | |
3fa83edf DM |
1246 | sub ruleset_addrule { |
1247 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1248 | |
3fa83edf | 1249 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1250 | |
3fa83edf DM |
1251 | push @{$ruleset->{$chain}}, "-A $chain $rule"; |
1252 | } | |
3a616aa0 | 1253 | |
3fa83edf DM |
1254 | sub ruleset_insertrule { |
1255 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1256 | |
3fa83edf | 1257 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1258 | |
3fa83edf DM |
1259 | unshift @{$ruleset->{$chain}}, "-A $chain $rule"; |
1260 | } | |
3a616aa0 | 1261 | |
782c4cde DM |
1262 | sub get_log_rule_base { |
1263 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
cbb5d6f3 | 1264 | |
782c4cde DM |
1265 | die "internal error - no log level" if !defined($loglevel); |
1266 | ||
1267 | $vmid = 0 if !defined($vmid); | |
1268 | ||
cbb5d6f3 | 1269 | # Note: we use special format for prefix to pass further |
782c4cde DM |
1270 | # info to log daemon (VMID, LOGVELEL and CHAIN) |
1271 | ||
1272 | return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; | |
1273 | } | |
1274 | ||
1275 | sub ruleset_addlog { | |
1276 | my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_; | |
1277 | ||
1278 | return if !defined($loglevel); | |
1279 | ||
1280 | my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel); | |
1281 | ||
1282 | $logrule = "$rule $logrule" if defined($rule); | |
1283 | ||
1284 | ruleset_addrule($ruleset, $chain, $logrule) | |
1285 | } | |
1286 | ||
3fa83edf | 1287 | sub generate_bridge_chains { |
530c005e DM |
1288 | my ($ruleset, $hostfw_conf, $bridge, $routing_table) = @_; |
1289 | ||
1290 | my $options = $hostfw_conf->{options} || {}; | |
1291 | ||
1292 | die "error: detected direct route to bridge '$bridge'\n" | |
1293 | if !$options->{allow_bridge_route} && $routing_table->{$bridge}; | |
2f3d8d76 | 1294 | |
5927497d DM |
1295 | if (!ruleset_chain_exist($ruleset, "$bridge-FW")) { |
1296 | ruleset_create_chain($ruleset, "$bridge-FW"); | |
3cc81077 DM |
1297 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-out -j $bridge-FW"); |
1298 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-in -j $bridge-FW"); | |
3fa83edf | 1299 | } |
3a616aa0 | 1300 | |
3fa83edf DM |
1301 | if (!ruleset_chain_exist($ruleset, "$bridge-OUT")) { |
1302 | ruleset_create_chain($ruleset, "$bridge-OUT"); | |
3cc81077 DM |
1303 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-in -j $bridge-OUT"); |
1304 | ruleset_insertrule($ruleset, "PVEFW-INPUT", "-i $bridge -m physdev --physdev-is-in -j $bridge-OUT"); | |
9fcad984 AD |
1305 | } |
1306 | ||
1307 | if (!ruleset_chain_exist($ruleset, "$bridge-IN")) { | |
1308 | ruleset_create_chain($ruleset, "$bridge-IN"); | |
3cc81077 | 1309 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j $bridge-IN"); |
fdb0bf20 | 1310 | ruleset_addrule($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT"); |
7323008d | 1311 | # accept traffic to unmanaged bridge ports |
3cc81077 | 1312 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j ACCEPT "); |
3fa83edf DM |
1313 | } |
1314 | } | |
3a616aa0 | 1315 | |
ead850e8 | 1316 | sub ruleset_add_chain_policy { |
782c4cde | 1317 | my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
1318 | |
1319 | if ($policy eq 'ACCEPT') { | |
1320 | ||
1321 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' }, | |
1322 | { ACCEPT => $accept_action}); | |
1323 | ||
1324 | } elsif ($policy eq 'DROP') { | |
1325 | ||
1326 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop"); | |
1327 | ||
782c4cde | 1328 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1329 | |
1330 | ruleset_addrule($ruleset, $chain, "-j DROP"); | |
1331 | } elsif ($policy eq 'REJECT') { | |
1332 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject"); | |
1333 | ||
782c4cde | 1334 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1335 | |
1336 | ruleset_addrule($ruleset, $chain, "-g PVEFW-reject"); | |
1337 | } else { | |
1338 | # should not happen | |
1339 | die "internal error: unknown policy '$policy'"; | |
1340 | } | |
1341 | } | |
1342 | ||
9e15114a DM |
1343 | sub ruleset_create_vm_chain { |
1344 | my ($ruleset, $chain, $options, $macaddr, $direction) = @_; | |
3a616aa0 | 1345 | |
9e15114a | 1346 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1347 | my $accept = generate_nfqueue($options); |
3a616aa0 | 1348 | |
bee633ab | 1349 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
9e15114a | 1350 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); |
bee633ab DM |
1351 | } |
1352 | ||
ce15d90b | 1353 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
76a2d1e7 | 1354 | if ($direction eq 'OUT') { |
cbb5d6f3 | 1355 | ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK', |
0f168d7b | 1356 | proto => 'udp', sport => 68, dport => 67 }); |
76a2d1e7 | 1357 | } else { |
cbb5d6f3 | 1358 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT', |
0f168d7b | 1359 | proto => 'udp', sport => 67, dport => 68 }); |
76a2d1e7 | 1360 | } |
ce15d90b DM |
1361 | } |
1362 | ||
bee633ab | 1363 | if ($options->{tcpflags}) { |
9e15114a | 1364 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); |
bee633ab DM |
1365 | } |
1366 | ||
9e15114a | 1367 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
cbb5d6f3 | 1368 | if ($direction eq 'OUT') { |
b47ecc88 | 1369 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -g PVEFW-SET-ACCEPT-MARK"); |
cbb5d6f3 | 1370 | } else { |
b47ecc88 AD |
1371 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
1372 | } | |
cbb5d6f3 | 1373 | |
b21aca2c DM |
1374 | if ($direction eq 'OUT') { |
1375 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
9e15114a | 1376 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP"); |
b21aca2c | 1377 | } |
9e15114a | 1378 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
c29f55c9 | 1379 | } |
9e15114a DM |
1380 | } |
1381 | ||
1382 | sub ruleset_generate_vm_rules { | |
fca39c2c | 1383 | my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_; |
9e15114a DM |
1384 | |
1385 | my $lc_direction = lc($direction); | |
c29f55c9 | 1386 | |
92e976b3 DM |
1387 | foreach my $rule (@$rules) { |
1388 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
ea9e5116 | 1389 | next if !$rule->{enable}; |
92e976b3 | 1390 | if ($rule->{type} eq 'group') { |
cbb5d6f3 | 1391 | my $group_chain = "GROUP-$rule->{action}-$direction"; |
92e976b3 | 1392 | if(!ruleset_chain_exist($ruleset, $group_chain)){ |
fca39c2c | 1393 | generate_group_rules($ruleset, $cluster_conf, $rule->{action}); |
92e976b3 | 1394 | } |
9e15114a | 1395 | ruleset_addrule($ruleset, $chain, "-j $group_chain"); |
b47ecc88 AD |
1396 | if ($direction eq 'OUT'){ |
1397 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN"); | |
1398 | }else{ | |
1399 | my $accept = generate_nfqueue($options); | |
1400 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept"); | |
1401 | } | |
1402 | ||
92e976b3 DM |
1403 | } else { |
1404 | next if $rule->{type} ne $lc_direction; | |
1405 | if ($direction eq 'OUT') { | |
cbb5d6f3 | 1406 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 1407 | { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
4e6112f9 | 1408 | } else { |
b47ecc88 | 1409 | my $accept = generate_nfqueue($options); |
ba791b1f | 1410 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
3a616aa0 | 1411 | } |
4e6112f9 | 1412 | } |
3a616aa0 | 1413 | } |
9e15114a DM |
1414 | } |
1415 | ||
b47ecc88 AD |
1416 | sub generate_nfqueue { |
1417 | my ($options) = @_; | |
1418 | ||
1419 | my $action = ""; | |
1420 | if($options->{ips}){ | |
1421 | $action = "NFQUEUE"; | |
1422 | if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
1423 | if(defined($3) && defined($1)) { | |
1424 | $action .= " --queue-balance $1:$3"; | |
1425 | }elsif (defined($1)) { | |
1426 | $action .= " --queue-num $1"; | |
1427 | } | |
1428 | } | |
1429 | $action .= " --queue-bypass"; | |
1430 | }else{ | |
1431 | $action = "ACCEPT"; | |
1432 | } | |
1433 | ||
1434 | return $action; | |
1435 | } | |
1436 | ||
da6fc60b AD |
1437 | sub ruleset_generate_vm_ipsrules { |
1438 | my ($ruleset, $options, $direction, $iface, $bridge) = @_; | |
1439 | ||
1440 | if ($options->{ips} && $direction eq 'IN') { | |
1441 | my $nfqueue = generate_nfqueue($options); | |
1442 | ||
1443 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1444 | ruleset_create_chain($ruleset, "PVEFW-IPS"); | |
1445 | } | |
1446 | ||
1447 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1448 | ruleset_create_chain($ruleset, "$bridge-IPS"); | |
1449 | ruleset_insertrule($ruleset, "PVEFW-IPS", "-o $bridge -m physdev --physdev-is-out -j $bridge-IPS"); | |
1450 | } | |
1451 | ||
1452 | ruleset_addrule($ruleset, "$bridge-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue"); | |
1453 | } | |
1454 | } | |
1455 | ||
9e15114a | 1456 | sub generate_venet_rules_direction { |
fca39c2c | 1457 | my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_; |
9e15114a | 1458 | |
5176619e | 1459 | parse_address_list($ip); # make sure we have a valid $ip list |
9e15114a DM |
1460 | |
1461 | my $lc_direction = lc($direction); | |
1462 | ||
1463 | my $rules = $vmfw_conf->{rules}; | |
1464 | ||
1465 | my $options = $vmfw_conf->{options}; | |
1466 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1467 | ||
1468 | my $chain = "venet0-$vmid-$direction"; | |
1469 | ||
1470 | ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction); | |
1471 | ||
fca39c2c | 1472 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction); |
9e15114a DM |
1473 | |
1474 | # implement policy | |
1475 | my $policy; | |
1476 | ||
1477 | if ($direction eq 'OUT') { | |
1478 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
1479 | } else { | |
1480 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default | |
1481 | } | |
1482 | ||
b47ecc88 AD |
1483 | my $accept = generate_nfqueue($options); |
1484 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1485 | ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action); |
9e15114a | 1486 | |
38485daa | 1487 | # plug into FORWARD, INPUT and OUTPUT chain |
eba0fb64 DM |
1488 | if ($direction eq 'OUT') { |
1489 | ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD", { | |
1490 | action => $chain, | |
1491 | source => $ip, | |
1492 | iface_in => 'venet0'}); | |
38485daa DM |
1493 | |
1494 | ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT", { | |
1495 | action => $chain, | |
1496 | source => $ip, | |
1497 | iface_in => 'venet0'}); | |
eba0fb64 DM |
1498 | } else { |
1499 | ruleset_generate_rule($ruleset, "PVEFW-FORWARD", { | |
1500 | action => $chain, | |
1501 | dest => $ip, | |
1502 | iface_out => 'venet0'}); | |
38485daa DM |
1503 | |
1504 | ruleset_generate_rule($ruleset, "PVEFW-OUTPUT", { | |
1505 | action => $chain, | |
1506 | dest => $ip, | |
1507 | iface_out => 'venet0'}); | |
eba0fb64 | 1508 | } |
9e15114a DM |
1509 | } |
1510 | ||
1511 | sub generate_tap_rules_direction { | |
fca39c2c | 1512 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_; |
9e15114a DM |
1513 | |
1514 | my $lc_direction = lc($direction); | |
1515 | ||
1516 | my $rules = $vmfw_conf->{rules}; | |
1517 | ||
1518 | my $options = $vmfw_conf->{options}; | |
1519 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1520 | ||
1521 | my $tapchain = "$iface-$direction"; | |
1522 | ||
1523 | ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction); | |
1524 | ||
fca39c2c | 1525 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options); |
3a616aa0 | 1526 | |
da6fc60b AD |
1527 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge); |
1528 | ||
ccae0b50 DM |
1529 | # implement policy |
1530 | my $policy; | |
1531 | ||
1532 | if ($direction eq 'OUT') { | |
72f63fde | 1533 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
ccae0b50 | 1534 | } else { |
72f63fde | 1535 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
ccae0b50 DM |
1536 | } |
1537 | ||
b47ecc88 AD |
1538 | my $accept = generate_nfqueue($options); |
1539 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1540 | ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action); |
3a616aa0 | 1541 | |
3fa83edf | 1542 | # plug the tap chain to bridge chain |
3cc81077 DM |
1543 | if ($direction eq 'IN') { |
1544 | ruleset_insertrule($ruleset, "$bridge-IN", | |
1545 | "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain"); | |
1546 | } else { | |
1547 | ruleset_insertrule($ruleset, "$bridge-OUT", | |
1548 | "-m physdev --physdev-in $iface -j $tapchain"); | |
1549 | } | |
3a616aa0 AD |
1550 | } |
1551 | ||
d18c1e2b | 1552 | sub enable_host_firewall { |
fca39c2c | 1553 | my ($ruleset, $hostfw_conf, $cluster_conf) = @_; |
0bd5f137 | 1554 | |
51bae274 | 1555 | # fixme: allow security groups |
0bd5f137 | 1556 | |
92e976b3 DM |
1557 | my $options = $hostfw_conf->{options}; |
1558 | my $rules = $hostfw_conf->{rules}; | |
178a63be | 1559 | |
3fa83edf | 1560 | # host inbound firewall |
dec84fcd DM |
1561 | my $chain = "PVEFW-HOST-IN"; |
1562 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 1563 | |
178a63be DM |
1564 | my $loglevel = get_option_log_level($options, "log_level_in"); |
1565 | ||
4ac863a6 DM |
1566 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
1567 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); | |
1568 | } | |
1569 | ||
fb424a00 DM |
1570 | if ($options->{tcpflags}) { |
1571 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); | |
1572 | } | |
1573 | ||
7fab95bc DM |
1574 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1575 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1576 | ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT"); |
1577 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1578 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1579 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1580 | |
23e888f8 DM |
1581 | # we use RETURN because we need to check also tap rules |
1582 | my $accept_action = 'RETURN'; | |
1583 | ||
92e976b3 DM |
1584 | foreach my $rule (@$rules) { |
1585 | next if $rule->{type} ne 'in'; | |
ba791b1f | 1586 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
0bd5f137 AD |
1587 | } |
1588 | ||
23e888f8 | 1589 | # implement input policy |
72f63fde | 1590 | my $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
782c4cde | 1591 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 1592 | |
3fa83edf | 1593 | # host outbound firewall |
aadd745e | 1594 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
1595 | ruleset_create_chain($ruleset, $chain); |
1596 | ||
178a63be DM |
1597 | $loglevel = get_option_log_level($options, "log_level_out"); |
1598 | ||
7fab95bc DM |
1599 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1600 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1601 | ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT"); |
1602 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1603 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1604 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1605 | |
23e888f8 DM |
1606 | # we use RETURN because we may want to check other thigs later |
1607 | $accept_action = 'RETURN'; | |
1608 | ||
92e976b3 DM |
1609 | foreach my $rule (@$rules) { |
1610 | next if $rule->{type} ne 'out'; | |
ba791b1f | 1611 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
0bd5f137 AD |
1612 | } |
1613 | ||
23e888f8 | 1614 | # implement output policy |
72f63fde | 1615 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
782c4cde | 1616 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
6158271d | 1617 | |
dec84fcd DM |
1618 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT"); |
1619 | ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
1620 | } |
1621 | ||
1622 | sub generate_group_rules { | |
fca39c2c | 1623 | my ($ruleset, $cluster_conf, $group) = @_; |
c6f5cc88 | 1624 | die "no such security group '$group'\n" if !$cluster_conf->{groups}->{$group}; |
9d31b418 | 1625 | |
c6f5cc88 | 1626 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 1627 | |
3fa83edf | 1628 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 1629 | |
3fa83edf | 1630 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1631 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1632 | |
92e976b3 DM |
1633 | foreach my $rule (@$rules) { |
1634 | next if $rule->{type} ne 'in'; | |
ba791b1f | 1635 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 AD |
1636 | } |
1637 | ||
3fa83edf | 1638 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 1639 | |
3fa83edf | 1640 | ruleset_create_chain($ruleset, $chain); |
4e6112f9 | 1641 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1642 | |
92e976b3 DM |
1643 | foreach my $rule (@$rules) { |
1644 | next if $rule->{type} ne 'out'; | |
1645 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to | |
1646 | # check also other tap rules later | |
cbb5d6f3 | 1647 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 1648 | { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 | 1649 | } |
9d31b418 AD |
1650 | } |
1651 | ||
51bae274 DM |
1652 | my $MAX_NETS = 32; |
1653 | my $valid_netdev_names = {}; | |
1654 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
1655 | $valid_netdev_names->{"net$i"} = 1; | |
1656 | } | |
5e1267a5 | 1657 | |
51bae274 DM |
1658 | sub parse_fw_rule { |
1659 | my ($line, $need_iface, $allow_groups) = @_; | |
5e1267a5 | 1660 | |
92e976b3 | 1661 | my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport); |
51bae274 | 1662 | |
11bac5c2 | 1663 | # we can add single line comments to the end of the rule |
30c1ae52 | 1664 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; |
11bac5c2 DM |
1665 | |
1666 | # we can disable a rule when prefixed with '|' | |
ea9e5116 DM |
1667 | my $enable = 1; |
1668 | ||
1669 | $enable = 0 if $line =~ s/^\|//; | |
51bae274 DM |
1670 | |
1671 | my @data = split(/\s+/, $line); | |
92e976b3 | 1672 | my $expected_elements = $need_iface ? 8 : 7; |
51bae274 DM |
1673 | |
1674 | die "wrong number of rule elements\n" if scalar(@data) > $expected_elements; | |
1675 | ||
1676 | if ($need_iface) { | |
92e976b3 | 1677 | ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data |
51bae274 | 1678 | } else { |
92e976b3 | 1679 | ($type, $action, $source, $dest, $proto, $dport, $sport) = @data; |
51bae274 DM |
1680 | } |
1681 | ||
92e976b3 | 1682 | die "incomplete rule\n" if ! ($type && $action); |
51bae274 | 1683 | |
961b4928 | 1684 | my $macro; |
961b4928 | 1685 | |
92e976b3 DM |
1686 | $type = lc($type); |
1687 | ||
1688 | if ($type eq 'in' || $type eq 'out') { | |
1689 | if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) { | |
1690 | # OK | |
1691 | } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
e5076eee DM |
1692 | $action = $2; |
1693 | my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)}; | |
1694 | die "unknown macro '$1'\n" if !$preferred_name; | |
1695 | $macro = $preferred_name; | |
92e976b3 DM |
1696 | } else { |
1697 | die "unknown action '$action'\n"; | |
1698 | } | |
1699 | } elsif ($type eq 'group') { | |
1700 | die "wrong number of rule elements\n" if scalar(@data) != 3; | |
1701 | die "groups disabled\n" if !$allow_groups; | |
1702 | ||
cbb5d6f3 | 1703 | die "invalid characters in group name\n" if $action !~ m/^[A-Za-z0-9_\-]+$/; |
51bae274 | 1704 | } else { |
92e976b3 | 1705 | die "unknown rule type '$type'\n"; |
51bae274 DM |
1706 | } |
1707 | ||
1708 | if ($need_iface) { | |
1709 | $iface = undef if $iface && $iface eq '-'; | |
51bae274 DM |
1710 | } |
1711 | ||
1712 | $proto = undef if $proto && $proto eq '-'; | |
54cd19a8 | 1713 | pve_fw_verify_protocol_spec($proto) if $proto; |
51bae274 DM |
1714 | |
1715 | $source = undef if $source && $source eq '-'; | |
1716 | $dest = undef if $dest && $dest eq '-'; | |
1717 | ||
1718 | $dport = undef if $dport && $dport eq '-'; | |
1719 | $sport = undef if $sport && $sport eq '-'; | |
1720 | ||
e5076eee DM |
1721 | parse_port_name_number_or_range($dport) if defined($dport); |
1722 | parse_port_name_number_or_range($sport) if defined($sport); | |
ba791b1f | 1723 | |
d72beb8e DM |
1724 | parse_address_list($source) if $source; |
1725 | parse_address_list($dest) if $dest; | |
51bae274 | 1726 | |
e5076eee | 1727 | return { |
92e976b3 | 1728 | type => $type, |
ea9e5116 | 1729 | enable => $enable, |
11bac5c2 | 1730 | comment => $comment, |
51bae274 | 1731 | action => $action, |
e5076eee | 1732 | macro => $macro, |
51bae274 DM |
1733 | iface => $iface, |
1734 | source => $source, | |
1735 | dest => $dest, | |
51bae274 DM |
1736 | proto => $proto, |
1737 | dport => $dport, | |
1738 | sport => $sport, | |
51bae274 DM |
1739 | }; |
1740 | } | |
1741 | ||
2d404ffc | 1742 | sub parse_vmfw_option { |
85c6eaed DM |
1743 | my ($line) = @_; |
1744 | ||
1745 | my ($opt, $value); | |
1746 | ||
178a63be DM |
1747 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
1748 | ||
b47ecc88 | 1749 | if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
1750 | $opt = lc($1); |
1751 | $value = int($2); | |
178a63be DM |
1752 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
1753 | $opt = lc($1); | |
1754 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1755 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
1756 | $opt = lc($1); |
1757 | $value = uc($3); | |
b47ecc88 AD |
1758 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
1759 | $opt = lc($1); | |
1760 | $value = $2; | |
9c6b6efd | 1761 | } else { |
85c6eaed DM |
1762 | chomp $line; |
1763 | die "can't parse option '$line'\n" | |
1764 | } | |
1765 | ||
1766 | return ($opt, $value); | |
1767 | } | |
1768 | ||
2d404ffc DM |
1769 | sub parse_hostfw_option { |
1770 | my ($line) = @_; | |
1771 | ||
1772 | my ($opt, $value); | |
1773 | ||
1774 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
1775 | ||
cc10e5d7 | 1776 | if ($line =~ m/^(enable|dhcp|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) { |
2d404ffc DM |
1777 | $opt = lc($1); |
1778 | $value = int($2); | |
178a63be | 1779 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
1780 | $opt = lc($1); |
1781 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1782 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2d404ffc DM |
1783 | $opt = lc($1); |
1784 | $value = uc($3); | |
490cdead DM |
1785 | } elsif ($line =~ m/^(nf_conntrack_max):\s*(\d+)\s*$/i) { |
1786 | $opt = lc($1); | |
1787 | $value = int($2); | |
2d404ffc DM |
1788 | } else { |
1789 | chomp $line; | |
1790 | die "can't parse option '$line'\n" | |
1791 | } | |
1792 | ||
1793 | return ($opt, $value); | |
1794 | } | |
1795 | ||
c6f5cc88 DM |
1796 | sub parse_clusterfw_option { |
1797 | my ($line) = @_; | |
1798 | ||
1799 | my ($opt, $value); | |
1800 | ||
1801 | if ($line =~ m/^(enable):\s*(0|1)\s*$/i) { | |
1802 | $opt = lc($1); | |
1803 | $value = int($2); | |
1804 | } else { | |
1805 | chomp $line; | |
1806 | die "can't parse option '$line'\n" | |
1807 | } | |
1808 | ||
1809 | return ($opt, $value); | |
1810 | } | |
1811 | ||
51bae274 DM |
1812 | sub parse_vm_fw_rules { |
1813 | my ($filename, $fh) = @_; | |
1814 | ||
92e976b3 | 1815 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1816 | |
1817 | my $section; | |
1818 | ||
e7b35711 DM |
1819 | my $digest = Digest::SHA->new('sha1'); |
1820 | ||
5e1267a5 | 1821 | while (defined(my $line = <$fh>)) { |
e7b35711 DM |
1822 | $digest->add($line); |
1823 | ||
5e1267a5 DM |
1824 | next if $line =~ m/^#/; |
1825 | next if $line =~ m/^\s*$/; | |
1826 | ||
961b4928 DM |
1827 | my $linenr = $fh->input_line_number(); |
1828 | my $prefix = "$filename (line $linenr)"; | |
1829 | ||
85c6eaed | 1830 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
5e1267a5 | 1831 | $section = lc($1); |
85c6eaed | 1832 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1833 | next; |
1834 | } | |
51bae274 | 1835 | if (!$section) { |
961b4928 | 1836 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1837 | next; |
1838 | } | |
1839 | ||
85c6eaed DM |
1840 | next if !$res->{$section}; # skip undefined section |
1841 | ||
1842 | if ($section eq 'options') { | |
6158271d | 1843 | eval { |
2d404ffc | 1844 | my ($opt, $value) = parse_vmfw_option($line); |
85c6eaed DM |
1845 | $res->{options}->{$opt} = $value; |
1846 | }; | |
1847 | warn "$prefix: $@" if $@; | |
1848 | next; | |
1849 | } | |
1850 | ||
e5076eee DM |
1851 | my $rule; |
1852 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
51bae274 | 1853 | if (my $err = $@) { |
961b4928 | 1854 | warn "$prefix: $err"; |
5e1267a5 DM |
1855 | next; |
1856 | } | |
1857 | ||
e5076eee | 1858 | push @{$res->{$section}}, $rule; |
51bae274 DM |
1859 | } |
1860 | ||
e7b35711 DM |
1861 | $res->{digest} = $digest->b64digest; |
1862 | ||
51bae274 DM |
1863 | return $res; |
1864 | } | |
1865 | ||
1866 | sub parse_host_fw_rules { | |
1867 | my ($filename, $fh) = @_; | |
1868 | ||
92e976b3 | 1869 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1870 | |
1871 | my $section; | |
1872 | ||
8b27beb9 DM |
1873 | my $digest = Digest::SHA->new('sha1'); |
1874 | ||
51bae274 | 1875 | while (defined(my $line = <$fh>)) { |
8b27beb9 DM |
1876 | $digest->add($line); |
1877 | ||
51bae274 DM |
1878 | next if $line =~ m/^#/; |
1879 | next if $line =~ m/^\s*$/; | |
1880 | ||
961b4928 DM |
1881 | my $linenr = $fh->input_line_number(); |
1882 | my $prefix = "$filename (line $linenr)"; | |
1883 | ||
2d404ffc | 1884 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
51bae274 | 1885 | $section = lc($1); |
2d404ffc | 1886 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1887 | next; |
1888 | } | |
51bae274 | 1889 | if (!$section) { |
961b4928 | 1890 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1891 | next; |
1892 | } | |
1893 | ||
2d404ffc DM |
1894 | next if !$res->{$section}; # skip undefined section |
1895 | ||
1896 | if ($section eq 'options') { | |
1897 | eval { | |
2d404ffc DM |
1898 | my ($opt, $value) = parse_hostfw_option($line); |
1899 | $res->{options}->{$opt} = $value; | |
1900 | }; | |
1901 | warn "$prefix: $@" if $@; | |
1902 | next; | |
1903 | } | |
1904 | ||
e5076eee DM |
1905 | my $rule; |
1906 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
ecbea048 | 1907 | if (my $err = $@) { |
961b4928 | 1908 | warn "$prefix: $err"; |
ecbea048 | 1909 | next; |
ecbea048 | 1910 | } |
cbb5d6f3 | 1911 | |
e5076eee | 1912 | push @{$res->{$section}}, $rule; |
51bae274 | 1913 | } |
ecbea048 | 1914 | |
cbb5d6f3 | 1915 | $res->{digest} = $digest->b64digest; |
8b27beb9 | 1916 | |
51bae274 DM |
1917 | return $res; |
1918 | } | |
4cdbb3b7 | 1919 | |
c6f5cc88 | 1920 | sub parse_cluster_fw_rules { |
51bae274 | 1921 | my ($filename, $fh) = @_; |
5e1267a5 | 1922 | |
51bae274 DM |
1923 | my $section; |
1924 | my $group; | |
1925 | ||
c4a2e5ae | 1926 | my $res = { rules => [], options => {}, groups => {}, ipset => {} }; |
6158271d | 1927 | |
d1c53b3e DM |
1928 | my $digest = Digest::SHA->new('sha1'); |
1929 | ||
51bae274 | 1930 | while (defined(my $line = <$fh>)) { |
d1c53b3e DM |
1931 | $digest->add($line); |
1932 | ||
51bae274 DM |
1933 | next if $line =~ m/^#/; |
1934 | next if $line =~ m/^\s*$/; | |
1935 | ||
961b4928 DM |
1936 | my $linenr = $fh->input_line_number(); |
1937 | my $prefix = "$filename (line $linenr)"; | |
1938 | ||
c6f5cc88 DM |
1939 | if ($line =~ m/^\[options\]$/i) { |
1940 | $section = 'options'; | |
1941 | next; | |
1942 | } | |
1943 | ||
92e976b3 | 1944 | if ($line =~ m/^\[group\s+(\S+)\]\s*$/i) { |
c6f5cc88 | 1945 | $section = 'groups'; |
92e976b3 | 1946 | $group = lc($1); |
51bae274 DM |
1947 | next; |
1948 | } | |
34cdedfa | 1949 | |
c6f5cc88 DM |
1950 | if ($line =~ m/^\[rules\]$/i) { |
1951 | $section = 'rules'; | |
1952 | next; | |
1953 | } | |
cbb5d6f3 | 1954 | |
936af352 | 1955 | if ($line =~ m/^\[ipset\s+(\S+)\]\s*$/i) { |
34cdedfa AD |
1956 | $section = 'ipset'; |
1957 | $group = lc($1); | |
34cdedfa AD |
1958 | next; |
1959 | } | |
1960 | ||
c6f5cc88 | 1961 | if (!$section) { |
cbb5d6f3 | 1962 | warn "$prefix: skip line - no section\n"; |
51bae274 DM |
1963 | next; |
1964 | } | |
1965 | ||
c6f5cc88 DM |
1966 | if ($section eq 'options') { |
1967 | eval { | |
1968 | my ($opt, $value) = parse_clusterfw_option($line); | |
1969 | $res->{options}->{$opt} = $value; | |
1970 | }; | |
1971 | warn "$prefix: $@" if $@; | |
1972 | } elsif ($section eq 'rules') { | |
1973 | my $rule; | |
1974 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
1975 | if (my $err = $@) { | |
1976 | warn "$prefix: $err"; | |
1977 | next; | |
1978 | } | |
1979 | push @{$res->{$section}}, $rule; | |
1980 | } elsif ($section eq 'groups') { | |
34cdedfa AD |
1981 | my $rule; |
1982 | eval { $rule = parse_fw_rule($line, 0, 0); }; | |
1983 | if (my $err = $@) { | |
1984 | warn "$prefix: $err"; | |
1985 | next; | |
1986 | } | |
3f95d14a | 1987 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a DM |
1988 | } elsif ($section eq 'ipset') { |
1989 | chomp $line; | |
cbb5d6f3 | 1990 | $line =~ m/^(\!)?\s*((\d+)\.(\d+)\.(\d+)\.(\d+)(\/(\d+))?)/; |
2a052ee3 | 1991 | my $nomatch = $1; |
cbb5d6f3 | 1992 | my $ip = $2; |
2a052ee3 AD |
1993 | |
1994 | if(!$ip){ | |
cbb5d6f3 | 1995 | warn "$prefix: $line is not an valid ip address\n"; |
34cdedfa AD |
1996 | next; |
1997 | } | |
2a052ee3 | 1998 | if (!Net::IP->new($ip)) { |
cbb5d6f3 | 1999 | warn "$prefix: $line is not an valid ip address\n"; |
2a052ee3 AD |
2000 | next; |
2001 | } | |
2a052ee3 | 2002 | |
cbb5d6f3 DM |
2003 | if ($nomatch) { |
2004 | if ($feature_ipset_nomatch) { | |
2005 | push @{$res->{$section}->{$group}}, "$ip nomatch"; | |
2006 | } else { | |
2007 | warn "$prefix: ignore $line - nomatch not supported by kernel\n"; | |
2008 | } | |
2009 | } else { | |
2010 | push @{$res->{$section}->{$group}}, $ip; | |
2011 | } | |
51bae274 | 2012 | } |
5e1267a5 DM |
2013 | } |
2014 | ||
d1c53b3e | 2015 | $res->{digest} = $digest->b64digest; |
5e1267a5 DM |
2016 | return $res; |
2017 | } | |
2018 | ||
06320eb0 DM |
2019 | sub run_locked { |
2020 | my ($code, @param) = @_; | |
2021 | ||
2022 | my $timeout = 10; | |
2023 | ||
2024 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
2025 | ||
2026 | die $@ if $@; | |
2027 | ||
2028 | return $res; | |
2029 | } | |
2030 | ||
5e1267a5 DM |
2031 | sub read_local_vm_config { |
2032 | ||
2033 | my $openvz = {}; | |
5e1267a5 DM |
2034 | my $qemu = {}; |
2035 | ||
c8301d63 | 2036 | my $vmdata = { openvz => $openvz, qemu => $qemu }; |
5e1267a5 | 2037 | |
c8301d63 DM |
2038 | my $vmlist = PVE::Cluster::get_vmlist(); |
2039 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
2040 | my $ids = $vmlist->{ids}; | |
2041 | ||
2042 | foreach my $vmid (keys %$ids) { | |
2043 | next if !$vmid; # skip VE0 | |
2044 | my $d = $ids->{$vmid}; | |
2045 | next if !$d->{node} || $d->{node} ne $nodename; | |
2046 | next if !$d->{type}; | |
2047 | if ($d->{type} eq 'openvz') { | |
d9fee004 DM |
2048 | if ($have_pve_manager) { |
2049 | my $cfspath = PVE::OpenVZ::cfs_config_path($vmid); | |
2050 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2051 | $openvz->{$vmid} = $conf; | |
2052 | } | |
c8301d63 DM |
2053 | } |
2054 | } elsif ($d->{type} eq 'qemu') { | |
d9fee004 DM |
2055 | if ($have_qemu_server) { |
2056 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); | |
2057 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2058 | $qemu->{$vmid} = $conf; | |
2059 | } | |
c8301d63 | 2060 | } |
5e1267a5 DM |
2061 | } |
2062 | } | |
d9fee004 | 2063 | |
5e1267a5 DM |
2064 | return $vmdata; |
2065 | }; | |
2066 | ||
e7b35711 DM |
2067 | sub load_vmfw_conf { |
2068 | my ($vmid) = @_; | |
2069 | ||
2070 | my $vmfw_conf = {}; | |
2071 | ||
2072 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
2073 | if (my $fh = IO::File->new($filename, O_RDONLY)) { | |
2074 | $vmfw_conf = parse_vm_fw_rules($filename, $fh); | |
2075 | } | |
2076 | ||
2077 | return $vmfw_conf; | |
2078 | } | |
2079 | ||
464f933e DM |
2080 | my $format_rules = sub { |
2081 | my ($rules, $need_iface) = @_; | |
2082 | ||
2083 | my $raw = ''; | |
2084 | ||
2085 | foreach my $rule (@$rules) { | |
2086 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
2087 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; | |
2088 | $raw .= uc($rule->{type}); | |
7ca36671 DM |
2089 | if ($rule->{macro}) { |
2090 | $raw .= " $rule->{macro}($rule->{action})"; | |
2091 | } else { | |
2092 | $raw .= " " . $rule->{action}; | |
2093 | } | |
464f933e DM |
2094 | $raw .= " " . ($rule->{iface} || '-') if $need_iface; |
2095 | $raw .= " " . ($rule->{source} || '-'); | |
2096 | $raw .= " " . ($rule->{dest} || '-'); | |
2097 | $raw .= " " . ($rule->{proto} || '-'); | |
2098 | $raw .= " " . ($rule->{dport} || '-'); | |
2099 | $raw .= " " . ($rule->{sport} || '-'); | |
cbb5d6f3 | 2100 | $raw .= " # " . encode('utf8', $rule->{comment}) |
464f933e DM |
2101 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; |
2102 | $raw .= "\n"; | |
2103 | } else { | |
2104 | die "implement me '$rule->{type}'"; | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | return $raw; | |
2109 | }; | |
2110 | ||
2111 | my $format_options = sub { | |
68c90e21 DM |
2112 | my ($options) = @_; |
2113 | ||
2114 | my $raw = ''; | |
464f933e DM |
2115 | |
2116 | $raw .= "[OPTIONS]\n\n"; | |
2117 | foreach my $opt (keys %$options) { | |
2118 | $raw .= "$opt: $options->{$opt}\n"; | |
2119 | } | |
2120 | $raw .= "\n"; | |
68c90e21 DM |
2121 | |
2122 | return $raw; | |
464f933e DM |
2123 | }; |
2124 | ||
2125 | sub save_vmfw_conf { | |
2126 | my ($vmid, $vmfw_conf) = @_; | |
2127 | ||
2128 | my $raw = ''; | |
2129 | ||
2130 | my $options = $vmfw_conf->{options}; | |
68c90e21 | 2131 | $raw .= &$format_options($options) if scalar(keys %$options); |
cbb5d6f3 | 2132 | |
464f933e DM |
2133 | my $rules = $vmfw_conf->{rules}; |
2134 | if (scalar(@$rules)) { | |
2135 | $raw .= "[RULES]\n\n"; | |
2136 | $raw .= &$format_rules($rules, 1); | |
2137 | $raw .= "\n"; | |
2138 | } | |
2139 | ||
2140 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
2141 | PVE::Tools::file_set_contents($filename, $raw); | |
2142 | } | |
2143 | ||
6fc63ffd | 2144 | sub read_vm_firewall_configs { |
5e1267a5 | 2145 | my ($vmdata) = @_; |
6fc63ffd | 2146 | my $vmfw_configs = {}; |
c8301d63 | 2147 | |
5e1267a5 | 2148 | foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) { |
e7b35711 DM |
2149 | my $vmfw_conf = load_vmfw_conf($vmid); |
2150 | next if !$vmfw_conf->{options}; # skip if file does not exists | |
2151 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
5e1267a5 DM |
2152 | } |
2153 | ||
6fc63ffd | 2154 | return $vmfw_configs; |
5e1267a5 DM |
2155 | } |
2156 | ||
2d404ffc DM |
2157 | sub get_option_log_level { |
2158 | my ($options, $k) = @_; | |
2159 | ||
2160 | my $v = $options->{$k}; | |
178a63be | 2161 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
2162 | |
2163 | return undef if $v eq '' || $v eq 'nolog'; | |
2164 | ||
2165 | $v = $log_level_hash->{$v} if defined($log_level_hash->{$v}); | |
2166 | ||
2167 | return $v if ($v >= 0) && ($v <= 7); | |
2168 | ||
2169 | warn "unknown log level ($k = '$v')\n"; | |
2170 | ||
2171 | return undef; | |
2172 | } | |
2173 | ||
d8f2505e | 2174 | sub generate_std_chains { |
2d404ffc | 2175 | my ($ruleset, $options) = @_; |
cbb5d6f3 | 2176 | |
2d404ffc DM |
2177 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); |
2178 | ||
2179 | # same as shorewall smurflog. | |
782c4cde DM |
2180 | my $chain = 'PVEFW-smurflog'; |
2181 | ||
2182 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2183 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
2d404ffc DM |
2184 | |
2185 | # same as shorewall logflags action. | |
2186 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde DM |
2187 | $chain = 'PVEFW-logflags'; |
2188 | # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG) | |
2189 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2190 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
d8f2505e DM |
2191 | |
2192 | foreach my $chain (keys %$pve_std_chains) { | |
2193 | ruleset_create_chain($ruleset, $chain); | |
2194 | foreach my $rule (@{$pve_std_chains->{$chain}}) { | |
2195 | if (ref($rule)) { | |
2196 | ruleset_generate_rule($ruleset, $chain, $rule); | |
2197 | } else { | |
2198 | ruleset_addrule($ruleset, $chain, $rule); | |
2199 | } | |
2200 | } | |
2201 | } | |
2202 | } | |
2203 | ||
34cdedfa | 2204 | sub generate_ipset_chains { |
dd7a13fd | 2205 | my ($ipset_ruleset, $fw_conf) = @_; |
34cdedfa | 2206 | |
dd7a13fd | 2207 | foreach my $ipset (keys %{$fw_conf->{ipset}}) { |
4b96e877 | 2208 | generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}); |
34cdedfa AD |
2209 | } |
2210 | } | |
2211 | ||
2212 | sub generate_ipset { | |
2213 | my ($ipset_ruleset, $name, $options) = @_; | |
2214 | ||
dd7a13fd DM |
2215 | my $hashsize = scalar(@$options); |
2216 | if ($hashsize <= 64) { | |
2a052ee3 | 2217 | $hashsize = 64; |
dd7a13fd | 2218 | } else { |
2a052ee3 AD |
2219 | $hashsize = round_powerof2($hashsize); |
2220 | } | |
2221 | ||
dd7a13fd | 2222 | push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize"; |
34cdedfa | 2223 | |
dd7a13fd | 2224 | foreach my $ip (@$options) { |
34cdedfa AD |
2225 | push @{$ipset_ruleset->{$name}}, "add $name $ip"; |
2226 | } | |
2a052ee3 AD |
2227 | } |
2228 | ||
2229 | sub round_powerof2 { | |
dd7a13fd | 2230 | my ($int) = @_; |
2a052ee3 | 2231 | |
dd7a13fd DM |
2232 | $int--; |
2233 | $int |= $int >> $_ foreach (1,2,4,8,16); | |
2234 | return ++$int; | |
34cdedfa AD |
2235 | } |
2236 | ||
6b9f68a2 DM |
2237 | sub save_pvefw_status { |
2238 | my ($status) = @_; | |
2239 | ||
2240 | die "unknown status '$status' - internal error" | |
2241 | if $status !~ m/^(stopped|active)$/; | |
2242 | ||
2243 | mkdir dirname($pve_fw_status_filename); | |
2244 | PVE::Tools::file_set_contents($pve_fw_status_filename, $status); | |
2245 | } | |
2246 | ||
2247 | sub read_pvefw_status { | |
2248 | ||
2249 | my $status = 'unknown'; | |
2250 | ||
2251 | return 'stopped' if ! -f $pve_fw_status_filename; | |
2252 | ||
2253 | eval { | |
2254 | $status = PVE::Tools::file_get_contents($pve_fw_status_filename); | |
2255 | }; | |
2256 | warn $@ if $@; | |
2257 | ||
2258 | return $status; | |
2259 | } | |
2260 | ||
530c005e DM |
2261 | # fixme: move to pve-common PVE::ProcFSTools |
2262 | sub read_proc_net_route { | |
2263 | my $filename = "/proc/net/route"; | |
2264 | ||
2265 | my $res = {}; | |
2266 | ||
2267 | my $fh = IO::File->new ($filename, "r"); | |
2268 | return $res if !$fh; | |
2269 | ||
2270 | my $int_to_quad = sub { | |
2271 | return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0); | |
2272 | }; | |
2273 | ||
2274 | while (defined(my $line = <$fh>)) { | |
2275 | next if $line =~/^Iface\s+Destination/; # skip head | |
2276 | my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8]; | |
2277 | push @{$res->{$iface}}, { | |
2278 | dest => &$int_to_quad(hex($dest)), | |
2279 | gateway => &$int_to_quad(hex($gateway)), | |
2280 | mask => &$int_to_quad(hex($mask)), | |
2281 | metric => $metric, | |
2282 | mtu => $mtu, | |
2283 | }; | |
2284 | } | |
2285 | ||
2286 | return $res; | |
2287 | } | |
2288 | ||
fca39c2c | 2289 | sub load_clusterfw_conf { |
530c005e | 2290 | |
fca39c2c DM |
2291 | my $cluster_conf = {}; |
2292 | if (my $fh = IO::File->new($clusterfw_conf_filename, O_RDONLY)) { | |
c6f5cc88 | 2293 | $cluster_conf = parse_cluster_fw_rules($clusterfw_conf_filename, $fh); |
51bae274 | 2294 | } |
5e1267a5 | 2295 | |
fca39c2c | 2296 | return $cluster_conf; |
e5d76bde DM |
2297 | } |
2298 | ||
fca39c2c DM |
2299 | sub save_clusterfw_conf { |
2300 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
2301 | |
2302 | my $raw = ''; | |
9c7e0858 | 2303 | |
c6f5cc88 | 2304 | my $options = $cluster_conf->{options}; |
68c90e21 | 2305 | $raw .= &$format_options($options) if scalar(keys %$options); |
9c7e0858 | 2306 | |
c6f5cc88 DM |
2307 | # fixme: save ipset |
2308 | ||
2309 | my $rules = $cluster_conf->{rules}; | |
2310 | if (scalar(@$rules)) { | |
2311 | $raw .= "[RULES]\n\n"; | |
63c91681 | 2312 | $raw .= &$format_rules($rules, 1); |
c6f5cc88 DM |
2313 | $raw .= "\n"; |
2314 | } | |
2315 | ||
2316 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
2317 | my $rules = $cluster_conf->{groups}->{$group}; | |
2318 | $raw .= "[group $group]\n\n"; | |
63c91681 | 2319 | $raw .= &$format_rules($rules, 0); |
9c7e0858 DM |
2320 | $raw .= "\n"; |
2321 | } | |
2322 | ||
fca39c2c | 2323 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); |
9c7e0858 DM |
2324 | } |
2325 | ||
8b27beb9 DM |
2326 | sub load_hostfw_conf { |
2327 | ||
2328 | my $hostfw_conf = {}; | |
63c91681 DM |
2329 | if (my $fh = IO::File->new($hostfw_conf_filename, O_RDONLY)) { |
2330 | $hostfw_conf = parse_host_fw_rules($hostfw_conf_filename, $fh); | |
8b27beb9 DM |
2331 | } |
2332 | return $hostfw_conf; | |
2333 | } | |
2334 | ||
63c91681 DM |
2335 | sub save_hostfw_conf { |
2336 | my ($hostfw_conf) = @_; | |
2337 | ||
2338 | my $raw = ''; | |
2339 | ||
2340 | my $options = $hostfw_conf->{options}; | |
68c90e21 | 2341 | $raw .= &$format_options($options) if scalar(keys %$options); |
cbb5d6f3 | 2342 | |
63c91681 DM |
2343 | my $rules = $hostfw_conf->{rules}; |
2344 | if (scalar(@$rules)) { | |
2345 | $raw .= "[RULES]\n\n"; | |
2346 | $raw .= &$format_rules($rules, 1); | |
2347 | $raw .= "\n"; | |
2348 | } | |
2349 | ||
2350 | PVE::Tools::file_set_contents($hostfw_conf_filename, $raw); | |
2351 | } | |
2352 | ||
e5d76bde DM |
2353 | sub compile { |
2354 | my $vmdata = read_local_vm_config(); | |
2355 | my $vmfw_configs = read_vm_firewall_configs($vmdata); | |
2356 | ||
2357 | my $routing_table = read_proc_net_route(); | |
2358 | ||
fca39c2c | 2359 | my $cluster_conf = load_clusterfw_conf(); |
e5d76bde | 2360 | |
34cdedfa | 2361 | my $ipset_ruleset = {}; |
fca39c2c | 2362 | generate_ipset_chains($ipset_ruleset, $cluster_conf); |
34cdedfa | 2363 | |
3fa83edf DM |
2364 | my $ruleset = {}; |
2365 | ||
dec84fcd DM |
2366 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
2367 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 2368 | |
fadb13dd | 2369 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
3fa83edf | 2370 | |
8b27beb9 DM |
2371 | my $hostfw_conf = load_hostfw_conf(); |
2372 | my $hostfw_options = $hostfw_conf->{options} || {}; | |
fadb13dd | 2373 | |
92e976b3 | 2374 | generate_std_chains($ruleset, $hostfw_options); |
fadb13dd | 2375 | |
6d2ab017 | 2376 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 2377 | |
fca39c2c | 2378 | enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable; |
3fa83edf | 2379 | |
6158271d | 2380 | # generate firewall rules for QEMU VMs |
3fa83edf DM |
2381 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
2382 | my $conf = $vmdata->{qemu}->{$vmid}; | |
6fc63ffd | 2383 | my $vmfw_conf = $vmfw_configs->{$vmid}; |
fa9c4a6f DM |
2384 | next if !$vmfw_conf; |
2385 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
3fa83edf DM |
2386 | |
2387 | foreach my $netid (keys %$conf) { | |
2388 | next if $netid !~ m/^net(\d+)$/; | |
2389 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
2390 | next if !$net; | |
2391 | my $iface = "tap${vmid}i$1"; | |
5e1267a5 | 2392 | |
3fa83edf DM |
2393 | my $bridge = $net->{bridge}; |
2394 | next if !$bridge; # fixme: ? | |
2395 | ||
2396 | $bridge .= "v$net->{tag}" if $net->{tag}; | |
2397 | ||
530c005e | 2398 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
3fa83edf | 2399 | |
c29f55c9 | 2400 | my $macaddr = $net->{macaddr}; |
cbb5d6f3 | 2401 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2402 | $vmfw_conf, $vmid, $bridge, 'IN'); |
cbb5d6f3 | 2403 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2404 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
3fa83edf DM |
2405 | } |
2406 | } | |
c8301d63 DM |
2407 | |
2408 | # generate firewall rules for OpenVZ containers | |
2409 | foreach my $vmid (keys %{$vmdata->{openvz}}) { | |
2410 | my $conf = $vmdata->{openvz}->{$vmid}; | |
2411 | ||
2412 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
2413 | next if !$vmfw_conf; | |
2414 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
2415 | ||
2416 | if ($conf->{ip_address} && $conf->{ip_address}->{value}) { | |
2417 | my $ip = $conf->{ip_address}->{value}; | |
fca39c2c DM |
2418 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN'); |
2419 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT'); | |
c8301d63 DM |
2420 | } |
2421 | ||
2422 | if ($conf->{netif} && $conf->{netif}->{value}) { | |
2423 | my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value}); | |
c8301d63 DM |
2424 | foreach my $netid (keys %$netif) { |
2425 | my $d = $netif->{$netid}; | |
2426 | my $bridge = $d->{bridge}; | |
2427 | if (!$bridge) { | |
2428 | warn "no bridge device for CT $vmid iface '$netid'\n"; | |
2429 | next; # fixme? | |
2430 | } | |
cbb5d6f3 | 2431 | |
530c005e DM |
2432 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
2433 | ||
12d0f130 | 2434 | my $macaddr = $d->{mac}; |
c8301d63 | 2435 | my $iface = $d->{host_ifname}; |
cbb5d6f3 | 2436 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2437 | $vmfw_conf, $vmid, $bridge, 'IN'); |
cbb5d6f3 | 2438 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2439 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
c8301d63 DM |
2440 | } |
2441 | } | |
2442 | } | |
c0413e35 | 2443 | |
cc10e5d7 | 2444 | if($hostfw_options->{optimize}){ |
da6fc60b | 2445 | |
e9d9a73e | 2446 | my $accept = ruleset_chain_exist($ruleset, "PVEFW-IPS") ? "PVEFW-IPS" : "ACCEPT"; |
da6fc60b | 2447 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
cc10e5d7 AD |
2448 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP"); |
2449 | } | |
2450 | ||
eba0fb64 DM |
2451 | # fixme: what log level should we use here? |
2452 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
2453 | ||
c98c037d DM |
2454 | # fixme: should we really block inter-bridge traffic? |
2455 | ||
2456 | # always allow traffic from containers? | |
2457 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN"); | |
2458 | ||
eba0fb64 | 2459 | # disable interbridge routing |
cbb5d6f3 | 2460 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop"); |
eba0fb64 | 2461 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop"); |
cbb5d6f3 DM |
2462 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+"); |
2463 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+"); | |
2464 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP"); | |
eba0fb64 DM |
2465 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP"); |
2466 | ||
34cdedfa | 2467 | return wantarray ? ($ruleset, $hostfw_conf, $ipset_ruleset) : $ruleset; |
3fa83edf DM |
2468 | } |
2469 | ||
2470 | sub get_ruleset_status { | |
4bd0a9c4 | 2471 | my ($ruleset, $active_chains, $digest_fn, $verbose) = @_; |
3fa83edf DM |
2472 | |
2473 | my $statushash = {}; | |
2474 | ||
2475 | foreach my $chain (sort keys %$ruleset) { | |
4bd0a9c4 | 2476 | my $sig = &$digest_fn($ruleset->{$chain}); |
9bf7d929 | 2477 | |
3fa83edf DM |
2478 | $statushash->{$chain}->{sig} = $sig; |
2479 | ||
2480 | my $oldsig = $active_chains->{$chain}; | |
2481 | if (!defined($oldsig)) { | |
2482 | $statushash->{$chain}->{action} = 'create'; | |
2483 | } else { | |
2484 | if ($oldsig eq $sig) { | |
2485 | $statushash->{$chain}->{action} = 'exists'; | |
2486 | } else { | |
2487 | $statushash->{$chain}->{action} = 'update'; | |
2488 | } | |
2489 | } | |
2490 | print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose; | |
2491 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2492 | print "\t$cmd\n" if $verbose; | |
2493 | } | |
2494 | } | |
2495 | ||
2496 | foreach my $chain (sort keys %$active_chains) { | |
2497 | if (!defined($ruleset->{$chain})) { | |
2498 | my $sig = $active_chains->{$chain}; | |
2499 | $statushash->{$chain}->{action} = 'delete'; | |
2500 | $statushash->{$chain}->{sig} = $sig; | |
2501 | print "delete $chain ($sig)\n" if $verbose; | |
2502 | } | |
6158271d | 2503 | } |
2a052ee3 | 2504 | |
3fa83edf DM |
2505 | return $statushash; |
2506 | } | |
2507 | ||
3fa83edf DM |
2508 | sub print_sig_rule { |
2509 | my ($chain, $sig) = @_; | |
2510 | ||
09d5f68e DM |
2511 | # We just use this to store a SHA1 checksum used to detect changes |
2512 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
2513 | } |
2514 | ||
df7cb349 | 2515 | sub get_ruleset_cmdlist { |
a84f4d96 | 2516 | my ($ruleset, $verbose) = @_; |
3fa83edf | 2517 | |
3fa83edf | 2518 | my $cmdlist = "*filter\n"; # we pass this to iptables-restore; |
cbb5d6f3 | 2519 | |
4bd0a9c4 DM |
2520 | my ($active_chains, $hooks) = iptables_get_chains(); |
2521 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose); | |
3fa83edf DM |
2522 | |
2523 | # create missing chains first | |
2524 | foreach my $chain (sort keys %$ruleset) { | |
2525 | my $stat = $statushash->{$chain}; | |
2526 | die "internal error" if !$stat; | |
2527 | next if $stat->{action} ne 'create'; | |
886aba9c | 2528 | |
3fa83edf DM |
2529 | $cmdlist .= ":$chain - [0:0]\n"; |
2530 | } | |
2531 | ||
4bd0a9c4 DM |
2532 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { |
2533 | if (!$hooks->{$h}) { | |
2534 | $cmdlist .= "-A $h -j PVEFW-$h\n"; | |
2535 | } | |
3fa83edf DM |
2536 | } |
2537 | ||
2538 | foreach my $chain (sort keys %$ruleset) { | |
2539 | my $stat = $statushash->{$chain}; | |
2540 | die "internal error" if !$stat; | |
2541 | ||
2542 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
2543 | $cmdlist .= "-F $chain\n"; | |
2544 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2545 | $cmdlist .= "$cmd\n"; | |
2546 | } | |
2547 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
2548 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 2549 | die "internal error"; # this should not happen |
3fa83edf DM |
2550 | } elsif ($stat->{action} eq 'exists') { |
2551 | # do nothing | |
2552 | } else { | |
2553 | die "internal error - unknown status '$stat->{action}'"; | |
2554 | } | |
2555 | } | |
2556 | ||
f5d28682 DM |
2557 | foreach my $chain (keys %$statushash) { |
2558 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2559 | $cmdlist .= "-F $chain\n"; | |
2560 | } | |
2561 | foreach my $chain (keys %$statushash) { | |
2562 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
2563 | next if $chain eq 'PVEFW-INPUT'; |
2564 | next if $chain eq 'PVEFW-OUTPUT'; | |
2565 | next if $chain eq 'PVEFW-FORWARD'; | |
f5d28682 DM |
2566 | $cmdlist .= "-X $chain\n"; |
2567 | } | |
2568 | ||
3f95d14a | 2569 | my $changes = $cmdlist ne "*filter\n" ? 1 : 0; |
4bd0a9c4 | 2570 | |
3fa83edf DM |
2571 | $cmdlist .= "COMMIT\n"; |
2572 | ||
3f95d14a | 2573 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
2574 | } |
2575 | ||
34cdedfa | 2576 | sub get_ipset_cmdlist { |
dd7a13fd | 2577 | my ($ruleset, $verbose) = @_; |
34cdedfa AD |
2578 | |
2579 | my $cmdlist = ""; | |
2580 | ||
dd7a13fd DM |
2581 | my $delete_cmdlist = ""; |
2582 | ||
4bd0a9c4 DM |
2583 | my $active_chains = ipset_get_chains(); |
2584 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose); | |
34cdedfa | 2585 | |
dd7a13fd DM |
2586 | foreach my $chain (sort keys %$ruleset) { |
2587 | my $stat = $statushash->{$chain}; | |
2588 | die "internal error" if !$stat; | |
2a052ee3 | 2589 | |
dd7a13fd DM |
2590 | if ($stat->{action} eq 'create') { |
2591 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
34cdedfa AD |
2592 | $cmdlist .= "$cmd\n"; |
2593 | } | |
dd7a13fd | 2594 | } |
34cdedfa | 2595 | |
dd7a13fd DM |
2596 | if ($stat->{action} eq 'update') { |
2597 | my $chain_swap = $chain."_swap"; | |
cbb5d6f3 | 2598 | |
dd7a13fd DM |
2599 | foreach my $cmd (@{$ruleset->{$chain}}) { |
2600 | $cmd =~ s/$chain/$chain_swap/; | |
2601 | $cmdlist .= "$cmd\n"; | |
34cdedfa | 2602 | } |
dd7a13fd DM |
2603 | $cmdlist .= "swap $chain_swap $chain\n"; |
2604 | $cmdlist .= "flush $chain_swap\n"; | |
2605 | $cmdlist .= "destroy $chain_swap\n"; | |
2a052ee3 | 2606 | } |
34cdedfa | 2607 | |
dd7a13fd | 2608 | } |
3f95d14a | 2609 | |
dd7a13fd DM |
2610 | foreach my $chain (keys %$statushash) { |
2611 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2a052ee3 | 2612 | |
dd7a13fd DM |
2613 | $delete_cmdlist .= "flush $chain\n"; |
2614 | $delete_cmdlist .= "destroy $chain\n"; | |
34cdedfa AD |
2615 | } |
2616 | ||
dd7a13fd | 2617 | my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0; |
cbb5d6f3 | 2618 | |
dd7a13fd | 2619 | return ($cmdlist, $delete_cmdlist, $changes); |
34cdedfa AD |
2620 | } |
2621 | ||
6b9f68a2 | 2622 | sub apply_ruleset { |
34cdedfa | 2623 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_; |
6b9f68a2 DM |
2624 | |
2625 | enable_bridge_firewall(); | |
2626 | ||
edb75ba9 DM |
2627 | update_nf_conntrack_max($hostfw_conf); |
2628 | ||
cbb5d6f3 | 2629 | my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) = |
81a0bf43 | 2630 | get_ipset_cmdlist($ipset_ruleset, undef, $verbose); |
6b9f68a2 | 2631 | |
81a0bf43 | 2632 | my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose); |
2a052ee3 | 2633 | |
81a0bf43 DM |
2634 | if ($verbose) { |
2635 | if ($ipset_changes) { | |
2636 | print "ipset changes:\n"; | |
2637 | print $ipset_create_cmdlist if $ipset_create_cmdlist; | |
2638 | print $ipset_delete_cmdlist if $ipset_delete_cmdlist; | |
2639 | } | |
3f95d14a | 2640 | |
81a0bf43 DM |
2641 | if ($changes) { |
2642 | print "iptables changes:\n"; | |
2643 | print $cmdlist; | |
2644 | } | |
2645 | } | |
3fa83edf | 2646 | |
2a052ee3 | 2647 | ipset_restore_cmdlist($ipset_create_cmdlist); |
34cdedfa | 2648 | |
3fa83edf DM |
2649 | iptables_restore_cmdlist($cmdlist); |
2650 | ||
dd7a13fd | 2651 | ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist; |
2a052ee3 | 2652 | |
6158271d | 2653 | # test: re-read status and check if everything is up to date |
4bd0a9c4 | 2654 | my $active_chains = iptables_get_chains(); |
81a0bf43 | 2655 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0); |
3fa83edf DM |
2656 | |
2657 | my $errors; | |
2658 | foreach my $chain (sort keys %$ruleset) { | |
2659 | my $stat = $statushash->{$chain}; | |
2660 | if ($stat->{action} ne 'exists') { | |
2661 | warn "unable to update chain '$chain'\n"; | |
2662 | $errors = 1; | |
2663 | } | |
2664 | } | |
b6360c3f | 2665 | |
3fa83edf | 2666 | die "unable to apply firewall changes\n" if $errors; |
b6360c3f DM |
2667 | } |
2668 | ||
490cdead DM |
2669 | sub update_nf_conntrack_max { |
2670 | my ($hostfw_conf) = @_; | |
2671 | ||
2672 | my $max = 65536; # reasonable default | |
2673 | ||
2674 | my $options = $hostfw_conf->{options} || {}; | |
2675 | ||
2676 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
2677 | $max = $options->{nf_conntrack_max}; | |
2678 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
2679 | } | |
2680 | ||
2681 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
2682 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
2683 | ||
2684 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
2685 | ||
2686 | if ($current != $max) { | |
2687 | my $hashsize = int($max/4); | |
2688 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
2689 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
2690 | } | |
2691 | } | |
2692 | ||
c4a2e5ae DM |
2693 | sub remove_pvefw_chains { |
2694 | ||
2695 | my ($chash, $hooks) = iptables_get_chains(); | |
2696 | my $cmdlist = "*filter\n"; | |
2697 | ||
2698 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { | |
2699 | if ($hooks->{$h}) { | |
2700 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
2701 | } | |
2702 | } | |
cbb5d6f3 | 2703 | |
c4a2e5ae DM |
2704 | foreach my $chain (keys %$chash) { |
2705 | $cmdlist .= "-F $chain\n"; | |
2706 | } | |
2707 | ||
2708 | foreach my $chain (keys %$chash) { | |
2709 | $cmdlist .= "-X $chain\n"; | |
2710 | } | |
2711 | $cmdlist .= "COMMIT\n"; | |
2712 | ||
2713 | iptables_restore_cmdlist($cmdlist); | |
2714 | } | |
2715 | ||
6b9f68a2 DM |
2716 | sub update { |
2717 | my ($start, $verbose) = @_; | |
2718 | ||
2719 | my $code = sub { | |
2720 | my $status = read_pvefw_status(); | |
2721 | ||
3f95d14a | 2722 | my ($ruleset, $hostfw_conf, $ipset_ruleset) = compile(); |
490cdead | 2723 | |
6b9f68a2 DM |
2724 | if ($start || $status eq 'active') { |
2725 | ||
2726 | save_pvefw_status('active') if ($status ne 'active'); | |
2727 | ||
34cdedfa | 2728 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose); |
6b9f68a2 DM |
2729 | } else { |
2730 | print "Firewall not active (status = $status)\n" if $verbose; | |
2731 | } | |
2732 | }; | |
2733 | ||
2734 | run_locked($code); | |
2735 | } | |
2736 | ||
2737 | ||
b6360c3f | 2738 | 1; |