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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; |
009ee3ac | 13 | use PVE::Tools qw($IPV4RE); |
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 | $have_pve_manager = 1; | |
36 | }; | |
37 | ||
009ee3ac DM |
38 | PVE::JSONSchema::register_format('IPv4orCIDR', \&pve_verify_ipv4_or_cidr); |
39 | sub pve_verify_ipv4_or_cidr { | |
40 | my ($cidr, $noerr) = @_; | |
41 | ||
30f1b100 DM |
42 | if ($cidr =~ m!^(?:$IPV4RE)(/(\d+))?$!) { |
43 | return $cidr if Net::IP->new($cidr); | |
44 | return undef if $noerr; | |
45 | die Net::IP::Error() . "\n"; | |
009ee3ac DM |
46 | } |
47 | return undef if $noerr; | |
48 | die "value does not look like a valid IP address or CIDR network\n"; | |
49 | } | |
50 | ||
51 | ||
cbb5d6f3 DM |
52 | my $feature_ipset_nomatch = 0; |
53 | eval { | |
54 | my (undef, undef, $release) = POSIX::uname(); | |
55 | if ($release =~ m/^(\d+)\.(\d+)\.\d+-/) { | |
56 | my ($major, $minor) = ($1, $2); | |
57 | $feature_ipset_nomatch = 1 if ($major > 3) || | |
58 | ($major == 3 && $minor >= 7); | |
59 | } | |
60 | ||
61 | }; | |
62 | ||
5e1267a5 | 63 | use Data::Dumper; |
b6360c3f | 64 | |
c8301d63 DM |
65 | my $nodename = PVE::INotify::nodename(); |
66 | ||
06320eb0 | 67 | my $pve_fw_lock_filename = "/var/lock/pvefw.lck"; |
6b9f68a2 | 68 | my $pve_fw_status_filename = "/var/lib/pve-firewall/pvefw.status"; |
06320eb0 | 69 | |
2d404ffc DM |
70 | my $default_log_level = 'info'; |
71 | ||
72 | my $log_level_hash = { | |
73 | debug => 7, | |
74 | info => 6, | |
75 | notice => 5, | |
76 | warning => 4, | |
77 | err => 3, | |
78 | crit => 2, | |
79 | alert => 1, | |
80 | emerg => 0, | |
81 | }; | |
82 | ||
857f62c8 | 83 | # imported/converted from: /usr/share/shorewall/macro.* |
961b4928 | 84 | my $pve_fw_macros = { |
857f62c8 | 85 | 'Amanda' => [ |
ebd54ae9 | 86 | "Amanda Backup", |
857f62c8 DM |
87 | { action => 'PARAM', proto => 'udp', dport => '10080' }, |
88 | { action => 'PARAM', proto => 'tcp', dport => '10080' }, | |
89 | ], | |
90 | 'Auth' => [ | |
ebd54ae9 | 91 | "Auth (identd) traffic", |
857f62c8 DM |
92 | { action => 'PARAM', proto => 'tcp', dport => '113' }, |
93 | ], | |
94 | 'BGP' => [ | |
ebd54ae9 | 95 | "Border Gateway Protocol traffic", |
857f62c8 DM |
96 | { action => 'PARAM', proto => 'tcp', dport => '179' }, |
97 | ], | |
98 | 'BitTorrent' => [ | |
ebd54ae9 | 99 | "BitTorrent traffic for BitTorrent 3.1 and earlier", |
961b4928 | 100 | { action => 'PARAM', proto => 'tcp', dport => '6881:6889' }, |
857f62c8 DM |
101 | { action => 'PARAM', proto => 'udp', dport => '6881' }, |
102 | ], | |
103 | 'BitTorrent32' => [ | |
ebd54ae9 | 104 | "BitTorrent traffic for BitTorrent 3.2 and later", |
857f62c8 DM |
105 | { action => 'PARAM', proto => 'tcp', dport => '6881:6999' }, |
106 | { action => 'PARAM', proto => 'udp', dport => '6881' }, | |
107 | ], | |
108 | 'CVS' => [ | |
ebd54ae9 | 109 | "Concurrent Versions System pserver traffic", |
857f62c8 DM |
110 | { action => 'PARAM', proto => 'tcp', dport => '2401' }, |
111 | ], | |
112 | 'Citrix' => [ | |
ebd54ae9 | 113 | "Citrix/ICA traffic (ICA, ICA Browser, CGP)", |
857f62c8 DM |
114 | { action => 'PARAM', proto => 'tcp', dport => '1494' }, |
115 | { action => 'PARAM', proto => 'udp', dport => '1604' }, | |
116 | { action => 'PARAM', proto => 'tcp', dport => '2598' }, | |
117 | ], | |
118 | 'DAAP' => [ | |
ebd54ae9 | 119 | "Digital Audio Access Protocol traffic (iTunes, Rythmbox daemons)", |
857f62c8 DM |
120 | { action => 'PARAM', proto => 'tcp', dport => '3689' }, |
121 | { action => 'PARAM', proto => 'udp', dport => '3689' }, | |
122 | ], | |
123 | 'DCC' => [ | |
ebd54ae9 | 124 | "Distributed Checksum Clearinghouse spam filtering mechanism", |
857f62c8 DM |
125 | { action => 'PARAM', proto => 'tcp', dport => '6277' }, |
126 | ], | |
127 | 'DHCPfwd' => [ | |
ebd54ae9 | 128 | "Forwarded DHCP traffic (bidirectional)", |
857f62c8 DM |
129 | { action => 'PARAM', proto => 'udp', dport => '67:68', sport => '67:68' }, |
130 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '67:68', sport => '67:68' }, | |
131 | ], | |
132 | 'DNS' => [ | |
ebd54ae9 | 133 | "Domain Name System traffic (upd and tcp)", |
857f62c8 DM |
134 | { action => 'PARAM', proto => 'udp', dport => '53' }, |
135 | { action => 'PARAM', proto => 'tcp', dport => '53' }, | |
136 | ], | |
137 | 'Distcc' => [ | |
ebd54ae9 | 138 | "Distributed Compiler service", |
857f62c8 DM |
139 | { action => 'PARAM', proto => 'tcp', dport => '3632' }, |
140 | ], | |
857f62c8 | 141 | 'FTP' => [ |
ebd54ae9 | 142 | "File Transfer Protocol", |
857f62c8 DM |
143 | { action => 'PARAM', proto => 'tcp', dport => '21' }, |
144 | ], | |
145 | 'Finger' => [ | |
ebd54ae9 | 146 | "Finger protocol (RFC 742)", |
857f62c8 DM |
147 | { action => 'PARAM', proto => 'tcp', dport => '79' }, |
148 | ], | |
149 | 'GNUnet' => [ | |
ebd54ae9 | 150 | "GNUnet secure peer-to-peer networking traffic", |
857f62c8 DM |
151 | { action => 'PARAM', proto => 'tcp', dport => '2086' }, |
152 | { action => 'PARAM', proto => 'udp', dport => '2086' }, | |
153 | { action => 'PARAM', proto => 'tcp', dport => '1080' }, | |
154 | { action => 'PARAM', proto => 'udp', dport => '1080' }, | |
155 | ], | |
156 | 'GRE' => [ | |
ebd54ae9 | 157 | "Generic Routing Encapsulation tunneling protocol (bidirectional)", |
857f62c8 DM |
158 | { action => 'PARAM', proto => '47' }, |
159 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' }, | |
160 | ], | |
161 | 'Git' => [ | |
ebd54ae9 | 162 | "Git distributed revision control traffic", |
857f62c8 DM |
163 | { action => 'PARAM', proto => 'tcp', dport => '9418' }, |
164 | ], | |
857f62c8 | 165 | 'HKP' => [ |
ebd54ae9 | 166 | "OpenPGP HTTP keyserver protocol traffic", |
857f62c8 DM |
167 | { action => 'PARAM', proto => 'tcp', dport => '11371' }, |
168 | ], | |
169 | 'HTTP' => [ | |
ebd54ae9 | 170 | "Hypertext Transfer Protocol (WWW)", |
961b4928 DM |
171 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
172 | ], | |
857f62c8 | 173 | 'HTTPS' => [ |
ebd54ae9 | 174 | "Hypertext Transfer Protocol (WWW) over SSL", |
857f62c8 DM |
175 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
176 | ], | |
177 | 'ICPV2' => [ | |
ebd54ae9 | 178 | "Internet Cache Protocol V2 (Squid) traffic", |
857f62c8 DM |
179 | { action => 'PARAM', proto => 'udp', dport => '3130' }, |
180 | ], | |
181 | 'ICQ' => [ | |
ebd54ae9 | 182 | "AOL Instant Messenger traffic", |
857f62c8 DM |
183 | { action => 'PARAM', proto => 'tcp', dport => '5190' }, |
184 | ], | |
185 | 'IMAP' => [ | |
ebd54ae9 | 186 | "Internet Message Access Protocol", |
857f62c8 DM |
187 | { action => 'PARAM', proto => 'tcp', dport => '143' }, |
188 | ], | |
189 | 'IMAPS' => [ | |
ebd54ae9 | 190 | "Internet Message Access Protocol over SSL", |
857f62c8 DM |
191 | { action => 'PARAM', proto => 'tcp', dport => '993' }, |
192 | ], | |
193 | 'IPIP' => [ | |
ebd54ae9 | 194 | "IPIP capsulation traffic (bidirectional)", |
857f62c8 DM |
195 | { action => 'PARAM', proto => '94' }, |
196 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '94' }, | |
197 | ], | |
857f62c8 | 198 | 'IPsec' => [ |
ebd54ae9 | 199 | "IPsec traffic (bidirectional)", |
857f62c8 DM |
200 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
201 | { action => 'PARAM', proto => '50' }, | |
202 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' }, | |
203 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' }, | |
204 | ], | |
205 | 'IPsecah' => [ | |
ebd54ae9 | 206 | "IPsec authentication (AH) traffic (bidirectional)", |
857f62c8 DM |
207 | { action => 'PARAM', proto => 'udp', dport => '500', sport => '500' }, |
208 | { action => 'PARAM', proto => '51' }, | |
209 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500', sport => '500' }, | |
210 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '51' }, | |
211 | ], | |
212 | 'IPsecnat' => [ | |
ebd54ae9 | 213 | "IPsec traffic and Nat-Traversal (bidirectional)", |
857f62c8 DM |
214 | { action => 'PARAM', proto => 'udp', dport => '500' }, |
215 | { action => 'PARAM', proto => 'udp', dport => '4500' }, | |
216 | { action => 'PARAM', proto => '50' }, | |
217 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '500' }, | |
218 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '4500' }, | |
219 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '50' }, | |
220 | ], | |
221 | 'IRC' => [ | |
ebd54ae9 | 222 | "Internet Relay Chat traffic", |
857f62c8 DM |
223 | { action => 'PARAM', proto => 'tcp', dport => '6667' }, |
224 | ], | |
857f62c8 | 225 | 'Jetdirect' => [ |
ebd54ae9 | 226 | "HP Jetdirect printing", |
857f62c8 DM |
227 | { action => 'PARAM', proto => 'tcp', dport => '9100' }, |
228 | ], | |
229 | 'L2TP' => [ | |
ebd54ae9 | 230 | "Layer 2 Tunneling Protocol traffic", |
857f62c8 DM |
231 | { action => 'PARAM', proto => 'udp', dport => '1701' }, |
232 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1701' }, | |
233 | ], | |
234 | 'LDAP' => [ | |
ebd54ae9 | 235 | "Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
236 | { action => 'PARAM', proto => 'tcp', dport => '389' }, |
237 | ], | |
238 | 'LDAPS' => [ | |
ebd54ae9 | 239 | "Secure Lightweight Directory Access Protocol traffic", |
857f62c8 DM |
240 | { action => 'PARAM', proto => 'tcp', dport => '636' }, |
241 | ], | |
242 | 'MSNP' => [ | |
ebd54ae9 | 243 | "Microsoft Notification Protocol", |
857f62c8 DM |
244 | { action => 'PARAM', proto => 'tcp', dport => '1863' }, |
245 | ], | |
246 | 'MSSQL' => [ | |
ebd54ae9 | 247 | "Microsoft SQL Server", |
857f62c8 DM |
248 | { action => 'PARAM', proto => 'tcp', dport => '1433' }, |
249 | ], | |
250 | 'Mail' => [ | |
ebd54ae9 | 251 | "Mail traffic (SMTP, SMTPS, Submission)", |
857f62c8 DM |
252 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
253 | { action => 'PARAM', proto => 'tcp', dport => '465' }, | |
254 | { action => 'PARAM', proto => 'tcp', dport => '587' }, | |
255 | ], | |
256 | 'Munin' => [ | |
ebd54ae9 | 257 | "Munin networked resource monitoring traffic", |
857f62c8 DM |
258 | { action => 'PARAM', proto => 'tcp', dport => '4949' }, |
259 | ], | |
260 | 'MySQL' => [ | |
ebd54ae9 | 261 | "MySQL server", |
857f62c8 DM |
262 | { action => 'PARAM', proto => 'tcp', dport => '3306' }, |
263 | ], | |
264 | 'NNTP' => [ | |
ebd54ae9 | 265 | "NNTP traffic (Usenet).", |
857f62c8 DM |
266 | { action => 'PARAM', proto => 'tcp', dport => '119' }, |
267 | ], | |
268 | 'NNTPS' => [ | |
ebd54ae9 | 269 | "Encrypted NNTP traffic (Usenet)", |
857f62c8 DM |
270 | { action => 'PARAM', proto => 'tcp', dport => '563' }, |
271 | ], | |
272 | 'NTP' => [ | |
ebd54ae9 | 273 | "Network Time Protocol (ntpd)", |
857f62c8 DM |
274 | { action => 'PARAM', proto => 'udp', dport => '123' }, |
275 | ], | |
276 | 'NTPbi' => [ | |
ebd54ae9 | 277 | "Bi-directional NTP (for NTP peers)", |
857f62c8 DM |
278 | { action => 'PARAM', proto => 'udp', dport => '123' }, |
279 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '123' }, | |
280 | ], | |
857f62c8 | 281 | 'OSPF' => [ |
ebd54ae9 | 282 | "OSPF multicast traffic", |
857f62c8 DM |
283 | { action => 'PARAM', proto => '89' }, |
284 | ], | |
285 | 'OpenVPN' => [ | |
ebd54ae9 | 286 | "OpenVPN traffic", |
857f62c8 DM |
287 | { action => 'PARAM', proto => 'udp', dport => '1194' }, |
288 | ], | |
289 | 'PCA' => [ | |
ebd54ae9 | 290 | "Symantec PCAnywere (tm)", |
857f62c8 DM |
291 | { action => 'PARAM', proto => 'udp', dport => '5632' }, |
292 | { action => 'PARAM', proto => 'tcp', dport => '5631' }, | |
293 | ], | |
294 | 'POP3' => [ | |
ebd54ae9 | 295 | "POP3 traffic", |
857f62c8 DM |
296 | { action => 'PARAM', proto => 'tcp', dport => '110' }, |
297 | ], | |
298 | 'POP3S' => [ | |
ebd54ae9 | 299 | "Encrypted POP3 traffic", |
857f62c8 DM |
300 | { action => 'PARAM', proto => 'tcp', dport => '995' }, |
301 | ], | |
302 | 'PPtP' => [ | |
ebd54ae9 | 303 | "Point-to-Point Tunneling Protocol", |
857f62c8 DM |
304 | { action => 'PARAM', proto => '47' }, |
305 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => '47' }, | |
306 | { action => 'PARAM', proto => 'tcp', dport => '1723' }, | |
307 | ], | |
308 | 'Ping' => [ | |
ebd54ae9 | 309 | "ICMP echo request", |
269d4f13 | 310 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
311 | ], |
312 | 'PostgreSQL' => [ | |
ebd54ae9 | 313 | "PostgreSQL server", |
857f62c8 DM |
314 | { action => 'PARAM', proto => 'tcp', dport => '5432' }, |
315 | ], | |
316 | 'Printer' => [ | |
ebd54ae9 | 317 | "Line Printer protocol printing", |
857f62c8 DM |
318 | { action => 'PARAM', proto => 'tcp', dport => '515' }, |
319 | ], | |
320 | 'RDP' => [ | |
ebd54ae9 | 321 | "Microsoft Remote Desktop Protocol traffic", |
857f62c8 DM |
322 | { action => 'PARAM', proto => 'tcp', dport => '3389' }, |
323 | ], | |
324 | 'RIPbi' => [ | |
ebd54ae9 | 325 | "Routing Information Protocol (bidirectional)", |
857f62c8 DM |
326 | { action => 'PARAM', proto => 'udp', dport => '520' }, |
327 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '520' }, | |
328 | ], | |
329 | 'RNDC' => [ | |
ebd54ae9 | 330 | "BIND remote management protocol", |
857f62c8 DM |
331 | { action => 'PARAM', proto => 'tcp', dport => '953' }, |
332 | ], | |
333 | 'Razor' => [ | |
ebd54ae9 | 334 | "Razor Antispam System", |
857f62c8 DM |
335 | { action => 'ACCEPT', proto => 'tcp', dport => '2703' }, |
336 | ], | |
337 | 'Rdate' => [ | |
ebd54ae9 | 338 | "Remote time retrieval (rdate)", |
857f62c8 DM |
339 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
340 | ], | |
341 | 'Rsync' => [ | |
ebd54ae9 | 342 | "Rsync server", |
857f62c8 DM |
343 | { action => 'PARAM', proto => 'tcp', dport => '873' }, |
344 | ], | |
345 | 'SANE' => [ | |
ebd54ae9 | 346 | "SANE network scanning", |
857f62c8 DM |
347 | { action => 'PARAM', proto => 'tcp', dport => '6566' }, |
348 | ], | |
349 | 'SMB' => [ | |
ebd54ae9 | 350 | "Microsoft SMB traffic", |
857f62c8 DM |
351 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, |
352 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
353 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
354 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
355 | ], | |
356 | 'SMBBI' => [ | |
ebd54ae9 | 357 | "Microsoft SMB traffic (bidirectional)", |
857f62c8 DM |
358 | { action => 'PARAM', proto => 'udp', dport => '135,445' }, |
359 | { action => 'PARAM', proto => 'udp', dport => '137:139' }, | |
360 | { action => 'PARAM', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
361 | { action => 'PARAM', proto => 'tcp', dport => '135,139,445' }, | |
362 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '135,445' }, | |
363 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '137:139' }, | |
364 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'udp', dport => '1024:65535', sport => '137' }, | |
365 | { action => 'PARAM', source => 'DEST', dest => 'SOURCE', proto => 'tcp', dport => '135,139,445' }, | |
366 | ], | |
367 | 'SMBswat' => [ | |
ebd54ae9 | 368 | "Samba Web Administration Tool", |
857f62c8 DM |
369 | { action => 'PARAM', proto => 'tcp', dport => '901' }, |
370 | ], | |
371 | 'SMTP' => [ | |
ebd54ae9 | 372 | "Simple Mail Transfer Protocol", |
857f62c8 DM |
373 | { action => 'PARAM', proto => 'tcp', dport => '25' }, |
374 | ], | |
375 | 'SMTPS' => [ | |
ebd54ae9 | 376 | "Encrypted Simple Mail Transfer Protocol", |
857f62c8 DM |
377 | { action => 'PARAM', proto => 'tcp', dport => '465' }, |
378 | ], | |
379 | 'SNMP' => [ | |
ebd54ae9 | 380 | "Simple Network Management Protocol", |
857f62c8 DM |
381 | { action => 'PARAM', proto => 'udp', dport => '161:162' }, |
382 | { action => 'PARAM', proto => 'tcp', dport => '161' }, | |
383 | ], | |
384 | 'SPAMD' => [ | |
ebd54ae9 | 385 | "Spam Assassin SPAMD traffic", |
857f62c8 DM |
386 | { action => 'PARAM', proto => 'tcp', dport => '783' }, |
387 | ], | |
388 | 'SSH' => [ | |
ebd54ae9 | 389 | "Secure shell traffic", |
857f62c8 DM |
390 | { action => 'PARAM', proto => 'tcp', dport => '22' }, |
391 | ], | |
392 | 'SVN' => [ | |
ebd54ae9 | 393 | "Subversion server (svnserve)", |
857f62c8 DM |
394 | { action => 'PARAM', proto => 'tcp', dport => '3690' }, |
395 | ], | |
396 | 'SixXS' => [ | |
ebd54ae9 | 397 | "SixXS IPv6 Deployment and Tunnel Broker", |
857f62c8 DM |
398 | { action => 'PARAM', proto => 'tcp', dport => '3874' }, |
399 | { action => 'PARAM', proto => 'udp', dport => '3740' }, | |
400 | { action => 'PARAM', proto => '41' }, | |
401 | { action => 'PARAM', proto => 'udp', dport => '5072,8374' }, | |
402 | ], | |
403 | 'Squid' => [ | |
ebd54ae9 | 404 | "Squid web proxy traffic", |
857f62c8 DM |
405 | { action => 'PARAM', proto => 'tcp', dport => '3128' }, |
406 | ], | |
407 | 'Submission' => [ | |
ebd54ae9 | 408 | "Mail message submission traffic", |
857f62c8 DM |
409 | { action => 'PARAM', proto => 'tcp', dport => '587' }, |
410 | ], | |
411 | 'Syslog' => [ | |
ebd54ae9 | 412 | "Syslog protocol (RFC 5424) traffic", |
857f62c8 DM |
413 | { action => 'PARAM', proto => 'udp', dport => '514' }, |
414 | { action => 'PARAM', proto => 'tcp', dport => '514' }, | |
415 | ], | |
416 | 'TFTP' => [ | |
ebd54ae9 | 417 | "Trivial File Transfer Protocol traffic", |
857f62c8 DM |
418 | { action => 'PARAM', proto => 'udp', dport => '69' }, |
419 | ], | |
420 | 'Telnet' => [ | |
ebd54ae9 | 421 | "Telnet traffic", |
857f62c8 DM |
422 | { action => 'PARAM', proto => 'tcp', dport => '23' }, |
423 | ], | |
424 | 'Telnets' => [ | |
ebd54ae9 | 425 | "Telnet over SSL", |
857f62c8 DM |
426 | { action => 'PARAM', proto => 'tcp', dport => '992' }, |
427 | ], | |
428 | 'Time' => [ | |
ebd54ae9 | 429 | "RFC 868 Time protocol", |
857f62c8 DM |
430 | { action => 'PARAM', proto => 'tcp', dport => '37' }, |
431 | ], | |
432 | 'Trcrt' => [ | |
ebd54ae9 | 433 | "Traceroute (for up to 30 hops) traffic", |
857f62c8 | 434 | { action => 'PARAM', proto => 'udp', dport => '33434:33524' }, |
269d4f13 | 435 | { action => 'PARAM', proto => 'icmp', dport => 'echo-request' }, |
857f62c8 DM |
436 | ], |
437 | 'VNC' => [ | |
ebd54ae9 | 438 | "VNC traffic for VNC display's 0 - 9", |
857f62c8 DM |
439 | { action => 'PARAM', proto => 'tcp', dport => '5900:5909' }, |
440 | ], | |
441 | 'VNCL' => [ | |
ebd54ae9 | 442 | "VNC traffic from Vncservers to Vncviewers in listen mode", |
857f62c8 DM |
443 | { action => 'PARAM', proto => 'tcp', dport => '5500' }, |
444 | ], | |
445 | 'Web' => [ | |
ebd54ae9 | 446 | "WWW traffic (HTTP and HTTPS)", |
857f62c8 | 447 | { action => 'PARAM', proto => 'tcp', dport => '80' }, |
961b4928 DM |
448 | { action => 'PARAM', proto => 'tcp', dport => '443' }, |
449 | ], | |
857f62c8 | 450 | 'Webcache' => [ |
ebd54ae9 | 451 | "Web Cache/Proxy traffic (port 8080)", |
857f62c8 DM |
452 | { action => 'PARAM', proto => 'tcp', dport => '8080' }, |
453 | ], | |
454 | 'Webmin' => [ | |
ebd54ae9 | 455 | "Webmin traffic", |
857f62c8 DM |
456 | { action => 'PARAM', proto => 'tcp', dport => '10000' }, |
457 | ], | |
458 | 'Whois' => [ | |
ebd54ae9 | 459 | "Whois (nicname, RFC 3912) traffic", |
857f62c8 DM |
460 | { action => 'PARAM', proto => 'tcp', dport => '43' }, |
461 | ], | |
961b4928 DM |
462 | }; |
463 | ||
464 | my $pve_fw_parsed_macros; | |
ebd54ae9 | 465 | my $pve_fw_macro_descr; |
961b4928 | 466 | my $pve_fw_preferred_macro_names = {}; |
3a616aa0 | 467 | |
d8f2505e DM |
468 | my $pve_std_chains = { |
469 | 'PVEFW-SET-ACCEPT-MARK' => [ | |
470 | "-j MARK --set-mark 1", | |
471 | ], | |
79929d9c DM |
472 | 'PVEFW-DropBroadcast' => [ |
473 | # same as shorewall 'Broadcast' | |
474 | # simply DROP BROADCAST/MULTICAST/ANYCAST | |
475 | # we can use this to reduce logging | |
476 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
477 | { action => 'DROP', dsttype => 'MULTICAST' }, | |
478 | { action => 'DROP', dsttype => 'ANYCAST' }, | |
cbb5d6f3 | 479 | { action => 'DROP', dest => '224.0.0.0/4' }, |
79929d9c DM |
480 | ], |
481 | 'PVEFW-reject' => [ | |
482 | # same as shorewall 'reject' | |
483 | { action => 'DROP', dsttype => 'BROADCAST' }, | |
cbb5d6f3 | 484 | { action => 'DROP', source => '224.0.0.0/4' }, |
79929d9c DM |
485 | { action => 'DROP', proto => 'icmp' }, |
486 | "-p tcp -j REJECT --reject-with tcp-reset", | |
487 | "-p udp -j REJECT --reject-with icmp-port-unreachable", | |
488 | "-p icmp -j REJECT --reject-with icmp-host-unreachable", | |
489 | "-j REJECT --reject-with icmp-host-prohibited", | |
490 | ], | |
491 | 'PVEFW-Drop' => [ | |
cbb5d6f3 | 492 | # same as shorewall 'Drop', which is equal to DROP, |
79929d9c DM |
493 | # but REJECT/DROP some packages to reduce logging, |
494 | # and ACCEPT critical ICMP types | |
495 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
496 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
497 | { action => 'PVEFW-DropBroadcast' }, | |
498 | # ACCEPT critical ICMP types | |
499 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
500 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
501 | # Drop packets with INVALID state | |
502 | "-m conntrack --ctstate INVALID -j DROP", | |
503 | # Drop Microsoft SMB noise | |
504 | { action => 'DROP', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
505 | { action => 'DROP', proto => 'udp', dport => '137:139'}, | |
506 | { action => 'DROP', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
507 | { action => 'DROP', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
508 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
509 | # Drop new/NotSyn traffic so that it doesn't get logged | |
510 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
511 | # Drop DNS replies | |
512 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
513 | ], | |
514 | 'PVEFW-Reject' => [ | |
cbb5d6f3 | 515 | # same as shorewall 'Reject', which is equal to Reject, |
79929d9c DM |
516 | # but REJECT/DROP some packages to reduce logging, |
517 | # and ACCEPT critical ICMP types | |
518 | { action => 'PVEFW-reject', proto => 'tcp', dport => '43' }, # REJECT 'auth' | |
519 | # we are not interested in BROADCAST/MULTICAST/ANYCAST | |
520 | { action => 'PVEFW-DropBroadcast' }, | |
521 | # ACCEPT critical ICMP types | |
522 | { action => 'ACCEPT', proto => 'icmp', dport => 'fragmentation-needed' }, | |
523 | { action => 'ACCEPT', proto => 'icmp', dport => 'time-exceeded' }, | |
524 | # Drop packets with INVALID state | |
525 | "-m conntrack --ctstate INVALID -j DROP", | |
526 | # Drop Microsoft SMB noise | |
527 | { action => 'PVEFW-reject', proto => 'udp', dport => '135,445', nbdport => 2 }, | |
528 | { action => 'PVEFW-reject', proto => 'udp', dport => '137:139'}, | |
529 | { action => 'PVEFW-reject', proto => 'udp', dport => '1024:65535', sport => 137 }, | |
530 | { action => 'PVEFW-reject', proto => 'tcp', dport => '135,139,445', nbdport => 3 }, | |
531 | { action => 'DROP', proto => 'udp', dport => 1900 }, # UPnP | |
532 | # Drop new/NotSyn traffic so that it doesn't get logged | |
533 | "-p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -j DROP", | |
534 | # Drop DNS replies | |
535 | { action => 'DROP', proto => 'udp', sport => 53 }, | |
536 | ], | |
d86659ef DM |
537 | 'PVEFW-tcpflags' => [ |
538 | # same as shorewall tcpflags action. | |
539 | # Packets arriving on this interface are checked for som illegal combinations of TCP flags | |
540 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG FIN,PSH,URG -g PVEFW-logflags", | |
541 | "-p tcp -m tcp --tcp-flags FIN,SYN,RST,PSH,ACK,URG NONE -g PVEFW-logflags", | |
542 | "-p tcp -m tcp --tcp-flags SYN,RST SYN,RST -g PVEFW-logflags", | |
543 | "-p tcp -m tcp --tcp-flags FIN,SYN FIN,SYN -g PVEFW-logflags", | |
544 | "-p tcp -m tcp --sport 0 --tcp-flags FIN,SYN,RST,ACK SYN -g PVEFW-logflags", | |
545 | ], | |
bee633ab DM |
546 | 'PVEFW-smurfs' => [ |
547 | # same as shorewall smurfs action | |
548 | # Filter packets for smurfs (packets with a broadcast address as the source). | |
549 | "-s 0.0.0.0/32 -j RETURN", | |
550 | "-m addrtype --src-type BROADCAST -g PVEFW-smurflog", | |
551 | "-s 224.0.0.0/4 -g PVEFW-smurflog", | |
552 | ], | |
d8f2505e DM |
553 | }; |
554 | ||
4b586518 DM |
555 | # iptables -p icmp -h |
556 | my $icmp_type_names = { | |
557 | any => 1, | |
558 | 'echo-reply' => 1, | |
559 | 'destination-unreachable' => 1, | |
560 | 'network-unreachable' => 1, | |
561 | 'host-unreachable' => 1, | |
562 | 'protocol-unreachable' => 1, | |
563 | 'port-unreachable' => 1, | |
564 | 'fragmentation-needed' => 1, | |
565 | 'source-route-failed' => 1, | |
566 | 'network-unknown' => 1, | |
567 | 'host-unknown' => 1, | |
568 | 'network-prohibited' => 1, | |
569 | 'host-prohibited' => 1, | |
570 | 'TOS-network-unreachable' => 1, | |
571 | 'TOS-host-unreachable' => 1, | |
572 | 'communication-prohibited' => 1, | |
573 | 'host-precedence-violation' => 1, | |
574 | 'precedence-cutoff' => 1, | |
575 | 'source-quench' => 1, | |
576 | 'redirect' => 1, | |
577 | 'network-redirect' => 1, | |
578 | 'host-redirect' => 1, | |
579 | 'TOS-network-redirect' => 1, | |
580 | 'TOS-host-redirect' => 1, | |
581 | 'echo-request' => 1, | |
582 | 'router-advertisement' => 1, | |
583 | 'router-solicitation' => 1, | |
584 | 'time-exceeded' => 1, | |
585 | 'ttl-zero-during-transit' => 1, | |
586 | 'ttl-zero-during-reassembly' => 1, | |
587 | 'parameter-problem' => 1, | |
588 | 'ip-header-bad' => 1, | |
589 | 'required-option-missing' => 1, | |
590 | 'timestamp-request' => 1, | |
591 | 'timestamp-reply' => 1, | |
592 | 'address-mask-request' => 1, | |
593 | 'address-mask-reply' => 1, | |
594 | }; | |
595 | ||
54cd19a8 | 596 | sub init_firewall_macros { |
6158271d | 597 | |
961b4928 | 598 | $pve_fw_parsed_macros = {}; |
9aab3127 | 599 | |
961b4928 | 600 | foreach my $k (keys %$pve_fw_macros) { |
e5076eee DM |
601 | my $lc_name = lc($k); |
602 | my $macro = $pve_fw_macros->{$k}; | |
ebd54ae9 DM |
603 | if (!ref($macro->[0])) { |
604 | $pve_fw_macro_descr->{$k} = shift @$macro; | |
605 | } | |
e5076eee DM |
606 | $pve_fw_preferred_macro_names->{$lc_name} = $k; |
607 | $pve_fw_parsed_macros->{$k} = $macro; | |
961b4928 | 608 | } |
9aab3127 DM |
609 | } |
610 | ||
54cd19a8 DM |
611 | init_firewall_macros(); |
612 | ||
ebd54ae9 DM |
613 | sub get_macros { |
614 | return wantarray ? ($pve_fw_parsed_macros, $pve_fw_macro_descr): $pve_fw_parsed_macros; | |
615 | } | |
616 | ||
fcba0beb DM |
617 | my $etc_services; |
618 | ||
619 | sub get_etc_services { | |
620 | ||
621 | return $etc_services if $etc_services; | |
622 | ||
623 | my $filename = "/etc/services"; | |
624 | ||
625 | my $fh = IO::File->new($filename, O_RDONLY); | |
626 | if (!$fh) { | |
627 | warn "unable to read '$filename' - $!\n"; | |
628 | return {}; | |
629 | } | |
630 | ||
631 | my $services = {}; | |
632 | ||
633 | while (my $line = <$fh>) { | |
634 | chomp ($line); | |
635 | next if $line =~m/^#/; | |
636 | next if ($line =~m/^\s*$/); | |
637 | ||
638 | if ($line =~ m!^(\S+)\s+(\S+)/(tcp|udp).*$!) { | |
639 | $services->{byid}->{$2}->{name} = $1; | |
35b66e9d | 640 | $services->{byid}->{$2}->{port} = $2; |
fcba0beb DM |
641 | $services->{byid}->{$2}->{$3} = 1; |
642 | $services->{byname}->{$1} = $services->{byid}->{$2}; | |
643 | } | |
644 | } | |
645 | ||
646 | close($fh); | |
647 | ||
6158271d DM |
648 | $etc_services = $services; |
649 | ||
3a616aa0 | 650 | |
fcba0beb DM |
651 | return $etc_services; |
652 | } | |
653 | ||
654 | my $etc_protocols; | |
655 | ||
656 | sub get_etc_protocols { | |
657 | return $etc_protocols if $etc_protocols; | |
658 | ||
659 | my $filename = "/etc/protocols"; | |
660 | ||
661 | my $fh = IO::File->new($filename, O_RDONLY); | |
662 | if (!$fh) { | |
663 | warn "unable to read '$filename' - $!\n"; | |
664 | return {}; | |
665 | } | |
666 | ||
667 | my $protocols = {}; | |
668 | ||
669 | while (my $line = <$fh>) { | |
670 | chomp ($line); | |
671 | next if $line =~m/^#/; | |
672 | next if ($line =~m/^\s*$/); | |
673 | ||
674 | if ($line =~ m!^(\S+)\s+(\d+)\s+.*$!) { | |
675 | $protocols->{byid}->{$2}->{name} = $1; | |
676 | $protocols->{byname}->{$1} = $protocols->{byid}->{$2}; | |
677 | } | |
678 | } | |
679 | ||
680 | close($fh); | |
681 | ||
682 | $etc_protocols = $protocols; | |
683 | ||
684 | return $etc_protocols; | |
685 | } | |
686 | ||
ecbea048 DM |
687 | sub parse_address_list { |
688 | my ($str) = @_; | |
689 | ||
28311400 | 690 | return if $str =~ m/^(\+)(\S+)$/; # ipset ref |
d72beb8e | 691 | |
3162af6b DM |
692 | my $count = 0; |
693 | my $iprange = 0; | |
694 | foreach my $elem (split(/,/, $str)) { | |
695 | $count++; | |
696 | if (!Net::IP->new($elem)) { | |
ecbea048 DM |
697 | my $err = Net::IP::Error(); |
698 | die "invalid IP address: $err\n"; | |
699 | } | |
3162af6b | 700 | $iprange = 1 if $elem =~ m/-/; |
ecbea048 | 701 | } |
3162af6b DM |
702 | |
703 | die "you can use a range in a list\n" if $iprange && $count > 1; | |
ecbea048 | 704 | } |
dddd9413 | 705 | |
fcba0beb DM |
706 | sub parse_port_name_number_or_range { |
707 | my ($str) = @_; | |
708 | ||
709 | my $services = PVE::Firewall::get_etc_services(); | |
7ca36671 | 710 | my $count = 0; |
041b7e8e DM |
711 | my $icmp_port = 0; |
712 | ||
fcba0beb | 713 | foreach my $item (split(/,/, $str)) { |
7ca36671 DM |
714 | $count++; |
715 | if ($item =~ m/^(\d+):(\d+)$/) { | |
716 | my ($port1, $port2) = ($1, $2); | |
717 | die "invalid port '$port1'\n" if $port1 > 65535; | |
718 | die "invalid port '$port2'\n" if $port2 > 65535; | |
719 | } elsif ($item =~ m/^(\d+)$/) { | |
720 | my $port = $1; | |
721 | die "invalid port '$port'\n" if $port > 65535; | |
722 | } else { | |
041b7e8e DM |
723 | if ($icmp_type_names->{$item}) { |
724 | $icmp_port = 1; | |
725 | } else { | |
726 | die "invalid port '$item'\n" if !$services->{byname}->{$item}; | |
727 | } | |
fcba0beb DM |
728 | } |
729 | } | |
730 | ||
041b7e8e DM |
731 | die "ICPM ports not allowed in port range\n" if $icmp_port && $count > 1; |
732 | ||
7ca36671 | 733 | return $count; |
fcba0beb DM |
734 | } |
735 | ||
54cd19a8 DM |
736 | PVE::JSONSchema::register_format('pve-fw-port-spec', \&pve_fw_verify_port_spec); |
737 | sub pve_fw_verify_port_spec { | |
738 | my ($portstr) = @_; | |
739 | ||
7ca36671 | 740 | parse_port_name_number_or_range($portstr); |
54cd19a8 DM |
741 | |
742 | return $portstr; | |
743 | } | |
744 | ||
745 | PVE::JSONSchema::register_format('pve-fw-v4addr-spec', \&pve_fw_verify_v4addr_spec); | |
746 | sub pve_fw_verify_v4addr_spec { | |
747 | my ($list) = @_; | |
748 | ||
749 | parse_address_list($list); | |
750 | ||
751 | return $list; | |
752 | } | |
753 | ||
754 | PVE::JSONSchema::register_format('pve-fw-protocol-spec', \&pve_fw_verify_protocol_spec); | |
755 | sub pve_fw_verify_protocol_spec { | |
756 | my ($proto) = @_; | |
757 | ||
758 | my $protocols = get_etc_protocols(); | |
759 | ||
760 | die "unknown protocol '$proto'\n" if $proto && | |
761 | !(defined($protocols->{byname}->{$proto}) || | |
762 | defined($protocols->{byid}->{$proto})); | |
763 | ||
764 | return $proto; | |
765 | } | |
766 | ||
767 | ||
d1c53b3e | 768 | # helper function for API |
d1c53b3e | 769 | |
9c7e0858 DM |
770 | my $rule_properties = { |
771 | pos => { | |
772 | description => "Update rule at position <pos>.", | |
773 | type => 'integer', | |
774 | minimum => 0, | |
775 | optional => 1, | |
776 | }, | |
777 | digest => { | |
778 | type => 'string', | |
779 | optional => 1, | |
54cd19a8 DM |
780 | maxLength => 27, |
781 | minLength => 27, | |
9c7e0858 DM |
782 | }, |
783 | type => { | |
784 | type => 'string', | |
785 | optional => 1, | |
786 | enum => ['in', 'out', 'group'], | |
787 | }, | |
788 | action => { | |
789 | type => 'string', | |
790 | optional => 1, | |
54cd19a8 | 791 | enum => ['ACCEPT', 'DROP', 'REJECT'], |
9c7e0858 | 792 | }, |
e5076eee DM |
793 | macro => { |
794 | type => 'string', | |
795 | optional => 1, | |
54cd19a8 | 796 | maxLength => 128, |
e5076eee | 797 | }, |
54cd19a8 | 798 | iface => get_standard_option('pve-iface', { optional => 1 }), |
9c7e0858 | 799 | source => { |
54cd19a8 | 800 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
801 | optional => 1, |
802 | }, | |
803 | dest => { | |
54cd19a8 | 804 | type => 'string', format => 'pve-fw-v4addr-spec', |
9c7e0858 DM |
805 | optional => 1, |
806 | }, | |
807 | proto => { | |
54cd19a8 | 808 | type => 'string', format => 'pve-fw-protocol-spec', |
9c7e0858 DM |
809 | optional => 1, |
810 | }, | |
811 | enable => { | |
812 | type => 'boolean', | |
813 | optional => 1, | |
814 | }, | |
815 | sport => { | |
54cd19a8 | 816 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
817 | optional => 1, |
818 | }, | |
819 | dport => { | |
54cd19a8 | 820 | type => 'string', format => 'pve-fw-port-spec', |
9c7e0858 DM |
821 | optional => 1, |
822 | }, | |
823 | comment => { | |
824 | type => 'string', | |
825 | optional => 1, | |
826 | }, | |
827 | }; | |
828 | ||
ce36326d DM |
829 | sub cleanup_fw_rule { |
830 | my ($rule, $digest, $pos) = @_; | |
831 | ||
832 | my $r = {}; | |
833 | ||
834 | foreach my $k (keys %$rule) { | |
835 | next if !$rule_properties->{$k}; | |
836 | my $v = $rule->{$k}; | |
837 | next if !defined($v); | |
838 | $r->{$k} = $v; | |
839 | $r->{digest} = $digest; | |
840 | $r->{pos} = $pos; | |
841 | } | |
842 | ||
843 | return $r; | |
844 | } | |
845 | ||
9c7e0858 DM |
846 | sub add_rule_properties { |
847 | my ($properties) = @_; | |
848 | ||
849 | foreach my $k (keys %$rule_properties) { | |
3655b01f DM |
850 | my $h = $rule_properties->{$k}; |
851 | # copy data, so that we can modify later without side effects | |
852 | foreach my $opt (keys %$h) { $properties->{$k}->{$opt} = $h->{$opt}; } | |
9c7e0858 | 853 | } |
cbb5d6f3 | 854 | |
9c7e0858 DM |
855 | return $properties; |
856 | } | |
857 | ||
5b7974df DM |
858 | sub delete_rule_properties { |
859 | my ($rule, $delete_str) = @_; | |
860 | ||
861 | foreach my $opt (PVE::Tools::split_list($delete_str)) { | |
862 | raise_param_exc({ 'delete' => "no such property ('$opt')"}) | |
863 | if !defined($rule_properties->{$opt}); | |
864 | raise_param_exc({ 'delete' => "unable to delete required property '$opt'"}) | |
865 | if $opt eq 'type' || $opt eq 'action'; | |
866 | delete $rule->{$opt}; | |
867 | } | |
868 | ||
869 | return $rule; | |
870 | } | |
871 | ||
9a2745a0 DM |
872 | my $apply_macro = sub { |
873 | my ($macro_name, $param, $verify) = @_; | |
874 | ||
875 | my $macro_rules = $pve_fw_parsed_macros->{$macro_name}; | |
876 | die "unknown macro '$macro_name'\n" if !$macro_rules; # should not happen | |
877 | ||
878 | my $rules = []; | |
879 | ||
880 | foreach my $templ (@$macro_rules) { | |
881 | my $rule = {}; | |
882 | my $param_used = {}; | |
883 | foreach my $k (keys %$templ) { | |
884 | my $v = $templ->{$k}; | |
885 | if ($v eq 'PARAM') { | |
886 | $v = $param->{$k}; | |
887 | $param_used->{$k} = 1; | |
888 | } elsif ($v eq 'DEST') { | |
889 | $v = $param->{dest}; | |
890 | $param_used->{dest} = 1; | |
891 | } elsif ($v eq 'SOURCE') { | |
892 | $v = $param->{source}; | |
893 | $param_used->{source} = 1; | |
894 | } | |
895 | ||
896 | if (!defined($v)) { | |
897 | my $msg = "missing parameter '$k' in macro '$macro_name'"; | |
898 | raise_param_exc({ macro => $msg }) if $verify; | |
899 | die "$msg\n"; | |
900 | } | |
901 | $rule->{$k} = $v; | |
902 | } | |
903 | foreach my $k (keys %$param) { | |
904 | next if $k eq 'macro'; | |
905 | next if !defined($param->{$k}); | |
906 | next if $param_used->{$k}; | |
907 | if (defined($rule->{$k})) { | |
908 | if ($rule->{$k} ne $param->{$k}) { | |
909 | my $msg = "parameter '$k' already define in macro (value = '$rule->{$k}')"; | |
910 | raise_param_exc({ $k => $msg }) if $verify; | |
911 | die "$msg\n"; | |
912 | } | |
913 | } else { | |
914 | $rule->{$k} = $param->{$k}; | |
915 | } | |
916 | } | |
917 | push @$rules, $rule; | |
918 | } | |
919 | ||
920 | return $rules; | |
921 | }; | |
922 | ||
7ca36671 DM |
923 | sub verify_rule { |
924 | my ($rule, $allow_groups) = @_; | |
925 | ||
926 | my $type = $rule->{type}; | |
927 | ||
928 | raise_param_exc({ type => "missing property"}) if !$type; | |
929 | raise_param_exc({ action => "missing property"}) if !$rule->{action}; | |
930 | ||
931 | if ($type eq 'in' || $type eq 'out') { | |
932 | raise_param_exc({ action => "unknown action '$rule->{action}'"}) | |
933 | if $rule->{action} !~ m/^(ACCEPT|DROP|REJECT)$/; | |
934 | } elsif ($type eq 'group') { | |
935 | raise_param_exc({ type => "security groups not allowed"}) | |
936 | if !$allow_groups; | |
937 | raise_param_exc({ action => "invalid characters in security group name"}) | |
938 | if $rule->{action} !~ m/^[A-Za-z0-9_\-]+$/; | |
939 | } else { | |
940 | raise_param_exc({ type => "unknown rule type '$type'"}); | |
941 | } | |
942 | ||
943 | # fixme: verify $rule->{iface}? | |
944 | ||
945 | if ($rule->{macro}) { | |
946 | my $preferred_name = $pve_fw_preferred_macro_names->{lc($rule->{macro})}; | |
947 | raise_param_exc({ macro => "unknown macro '$rule->{macro}'"}) if !$preferred_name; | |
948 | $rule->{macro} = $preferred_name; | |
949 | } | |
950 | ||
951 | if ($rule->{dport}) { | |
952 | eval { parse_port_name_number_or_range($rule->{dport}); }; | |
953 | raise_param_exc({ dport => $@ }) if $@; | |
954 | } | |
955 | ||
956 | if ($rule->{sport}) { | |
957 | eval { parse_port_name_number_or_range($rule->{sport}); }; | |
958 | raise_param_exc({ sport => $@ }) if $@; | |
959 | } | |
960 | ||
961 | if ($rule->{source}) { | |
962 | eval { parse_address_list($rule->{source}); }; | |
963 | raise_param_exc({ source => $@ }) if $@; | |
964 | } | |
965 | ||
966 | if ($rule->{dest}) { | |
967 | eval { parse_address_list($rule->{dest}); }; | |
968 | raise_param_exc({ dest => $@ }) if $@; | |
969 | } | |
970 | ||
9a2745a0 DM |
971 | if ($rule->{macro}) { |
972 | &$apply_macro($rule->{macro}, $rule, 1); | |
973 | } | |
974 | ||
7ca36671 DM |
975 | return $rule; |
976 | } | |
977 | ||
9c7e0858 DM |
978 | sub copy_rule_data { |
979 | my ($rule, $param) = @_; | |
980 | ||
981 | foreach my $k (keys %$rule_properties) { | |
982 | if (defined(my $v = $param->{$k})) { | |
983 | if ($v eq '' || $v eq '-') { | |
984 | delete $rule->{$k}; | |
985 | } else { | |
986 | $rule->{$k} = $v; | |
987 | } | |
988 | } else { | |
989 | delete $rule->{$k}; | |
990 | } | |
991 | } | |
7ca36671 DM |
992 | |
993 | # verify rule now | |
994 | ||
9c7e0858 DM |
995 | return $rule; |
996 | } | |
997 | ||
998 | # core functions | |
780bcc0f DM |
999 | my $bridge_firewall_enabled = 0; |
1000 | ||
1001 | sub enable_bridge_firewall { | |
1002 | ||
1003 | return if $bridge_firewall_enabled; # only once | |
1004 | ||
5f0a912c DM |
1005 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-iptables", "1"); |
1006 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/bridge/bridge-nf-call-ip6tables", "1"); | |
780bcc0f | 1007 | |
6a8a75db DM |
1008 | # make sure syncookies are enabled (which is default on newer 3.X kernels anyways) |
1009 | PVE::ProcFSTools::write_proc_entry("/proc/sys/net/ipv4/tcp_syncookies", "1"); | |
1010 | ||
780bcc0f DM |
1011 | $bridge_firewall_enabled = 1; |
1012 | } | |
1013 | ||
8cebfa6f | 1014 | my $rule_format = "%-15s %-30s %-30s %-15s %-15s %-15s\n"; |
dddd9413 | 1015 | |
b16e818e DM |
1016 | sub iptables_restore_cmdlist { |
1017 | my ($cmdlist) = @_; | |
3a616aa0 | 1018 | |
3fa83edf | 1019 | run_command("/sbin/iptables-restore -n", input => $cmdlist); |
3a616aa0 AD |
1020 | } |
1021 | ||
34cdedfa AD |
1022 | sub ipset_restore_cmdlist { |
1023 | my ($cmdlist) = @_; | |
1024 | ||
dd7a13fd | 1025 | run_command("/usr/sbin/ipset restore", input => $cmdlist); |
34cdedfa AD |
1026 | } |
1027 | ||
de2a57cd DM |
1028 | sub iptables_get_chains { |
1029 | ||
1030 | my $res = {}; | |
1031 | ||
1032 | # check what chains we want to track | |
1033 | my $is_pvefw_chain = sub { | |
1034 | my $name = shift; | |
1035 | ||
dec84fcd DM |
1036 | return 1 if $name =~ m/^PVEFW-\S+$/; |
1037 | ||
de2a57cd | 1038 | return 1 if $name =~ m/^tap\d+i\d+-(:?IN|OUT)$/; |
954f24b1 DM |
1039 | |
1040 | return 1 if $name =~ m/^veth\d+.\d+-(:?IN|OUT)$/; # fixme: dev name is configurable | |
1041 | ||
9e15114a DM |
1042 | return 1 if $name =~ m/^venet0-\d+-(:?IN|OUT)$/; |
1043 | ||
da6fc60b | 1044 | return 1 if $name =~ m/^vmbr\d+-(:?FW|IN|OUT|IPS)$/; |
f50656c2 | 1045 | return 1 if $name =~ m/^GROUP-(:?[^\s\-]+)-(:?IN|OUT)$/; |
de2a57cd DM |
1046 | |
1047 | return undef; | |
1048 | }; | |
1049 | ||
1050 | my $table = ''; | |
1051 | ||
c4a2e5ae DM |
1052 | my $hooks = {}; |
1053 | ||
de2a57cd DM |
1054 | my $parser = sub { |
1055 | my $line = shift; | |
1056 | ||
1057 | return if $line =~ m/^#/; | |
1058 | return if $line =~ m/^\s*$/; | |
1059 | ||
1060 | if ($line =~ m/^\*(\S+)$/) { | |
1061 | $table = $1; | |
1062 | return; | |
1063 | } | |
1064 | ||
1065 | return if $table ne 'filter'; | |
1066 | ||
1067 | if ($line =~ m/^:(\S+)\s/) { | |
1068 | my $chain = $1; | |
1069 | return if !&$is_pvefw_chain($chain); | |
3fa83edf | 1070 | $res->{$chain} = "unknown"; |
09d5f68e | 1071 | } elsif ($line =~ m/^-A\s+(\S+)\s.*--comment\s+\"PVESIG:(\S+)\"/) { |
3fa83edf | 1072 | my ($chain, $sig) = ($1, $2); |
de2a57cd | 1073 | return if !&$is_pvefw_chain($chain); |
3fa83edf | 1074 | $res->{$chain} = $sig; |
c4a2e5ae DM |
1075 | } elsif ($line =~ m/^-A\s+(INPUT|OUTPUT|FORWARD)\s+-j\s+PVEFW-\1$/) { |
1076 | $hooks->{$1} = 1; | |
de2a57cd DM |
1077 | } else { |
1078 | # simply ignore the rest | |
1079 | return; | |
1080 | } | |
1081 | }; | |
1082 | ||
1083 | run_command("/sbin/iptables-save", outfunc => $parser); | |
1084 | ||
c4a2e5ae | 1085 | return wantarray ? ($res, $hooks) : $res; |
de2a57cd DM |
1086 | } |
1087 | ||
9bf7d929 DM |
1088 | sub iptables_chain_digest { |
1089 | my ($rules) = @_; | |
1090 | my $digest = Digest::SHA->new('sha1'); | |
1091 | foreach my $rule (@$rules) { # order is important | |
1092 | $digest->add($rule); | |
1093 | } | |
1094 | return $digest->b64digest; | |
1095 | } | |
1096 | ||
3f95d14a DM |
1097 | sub ipset_chain_digest { |
1098 | my ($rules) = @_; | |
4bd0a9c4 | 1099 | |
3f95d14a DM |
1100 | my $digest = Digest::SHA->new('sha1'); |
1101 | foreach my $rule (sort @$rules) { # note: sorted | |
1102 | $digest->add($rule); | |
1103 | } | |
1104 | return $digest->b64digest; | |
1105 | } | |
1106 | ||
34cdedfa AD |
1107 | sub ipset_get_chains { |
1108 | ||
1109 | my $res = {}; | |
1110 | my $chains = {}; | |
1111 | ||
1112 | my $parser = sub { | |
1113 | my $line = shift; | |
1114 | ||
1115 | return if $line =~ m/^#/; | |
1116 | return if $line =~ m/^\s*$/; | |
4b96e877 | 1117 | if ($line =~ m/^(?:\S+)\s(PVEFW-\S+)\s(?:\S+).*/) { |
81a0bf43 DM |
1118 | my $chain = $1; |
1119 | $line =~ s/\s+$//; # delete trailing white space | |
1120 | push @{$chains->{$chain}}, $line; | |
34cdedfa AD |
1121 | } else { |
1122 | # simply ignore the rest | |
1123 | return; | |
1124 | } | |
1125 | }; | |
1126 | ||
3f95d14a | 1127 | run_command("/usr/sbin/ipset save", outfunc => $parser); |
34cdedfa | 1128 | |
3f95d14a DM |
1129 | # compute digest for each chain |
1130 | foreach my $chain (keys %$chains) { | |
1131 | $res->{$chain} = ipset_chain_digest($chains->{$chain}); | |
34cdedfa AD |
1132 | } |
1133 | ||
1134 | return $res; | |
1135 | } | |
1136 | ||
eba0fb64 | 1137 | sub ruleset_generate_cmdstr { |
ba791b1f | 1138 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_; |
3a616aa0 | 1139 | |
00bb4391 | 1140 | return if defined($rule->{enable}) && !$rule->{enable}; |
11bac5c2 | 1141 | |
e5076eee DM |
1142 | die "unable to emit macro - internal error" if $rule->{macro}; # should not happen |
1143 | ||
1144 | my $nbdport = defined($rule->{dport}) ? parse_port_name_number_or_range($rule->{dport}) : 0; | |
1145 | my $nbsport = defined($rule->{sport}) ? parse_port_name_number_or_range($rule->{sport}) : 0; | |
e5076eee | 1146 | |
41524a58 | 1147 | my @cmd = (); |
3a616aa0 | 1148 | |
eba0fb64 DM |
1149 | push @cmd, "-i $rule->{iface_in}" if $rule->{iface_in}; |
1150 | push @cmd, "-o $rule->{iface_out}" if $rule->{iface_out}; | |
1151 | ||
ba791b1f AD |
1152 | my $source = $rule->{source}; |
1153 | my $dest = $rule->{dest}; | |
1154 | ||
cbb5d6f3 DM |
1155 | if ($source) { |
1156 | if ($source =~ m/^(\+)(\S+)$/) { | |
936af352 | 1157 | die "no such ipset $2" if !$cluster_conf->{ipset}->{$2}; |
4b96e877 | 1158 | push @cmd, "-m set --match-set PVEFW-$2 src"; |
ba791b1f | 1159 | |
ac8242cc | 1160 | } elsif ($source =~ m/\-/){ |
ba791b1f AD |
1161 | push @cmd, "-m iprange --src-range $source"; |
1162 | ||
cbb5d6f3 | 1163 | } else { |
ba791b1f AD |
1164 | push @cmd, "-s $source"; |
1165 | } | |
1166 | } | |
1167 | ||
cbb5d6f3 DM |
1168 | if ($dest) { |
1169 | if ($dest =~ m/^(\+)(\S+)$/) { | |
936af352 | 1170 | die "no such ipset $2" if !$cluster_conf->{ipset}->{$2}; |
4b96e877 | 1171 | push @cmd, "-m set --match-set PVEFW-$2 dst"; |
ba791b1f | 1172 | |
cbb5d6f3 | 1173 | } elsif ($dest =~ m/^(\d+)\.(\d+).(\d+).(\d+)\-(\d+)\.(\d+).(\d+).(\d+)$/){ |
ba791b1f AD |
1174 | push @cmd, "-m iprange --dst-range $dest"; |
1175 | ||
cbb5d6f3 | 1176 | } else { |
ba791b1f AD |
1177 | push @cmd, "-s $dest"; |
1178 | } | |
1179 | } | |
4b586518 | 1180 | |
181390b0 | 1181 | if ($rule->{proto}) { |
41524a58 | 1182 | push @cmd, "-p $rule->{proto}"; |
e3a1d391 | 1183 | |
181390b0 | 1184 | my $multiport = 0; |
e5076eee DM |
1185 | $multiport++ if $nbdport > 1; |
1186 | $multiport++ if $nbsport > 1; | |
e3a1d391 | 1187 | |
41524a58 | 1188 | push @cmd, "--match multiport" if $multiport; |
4b586518 | 1189 | |
cbb5d6f3 | 1190 | die "multiport: option '--sports' cannot be used together with '--dports'\n" |
181390b0 DM |
1191 | if ($multiport == 2) && ($rule->{dport} ne $rule->{sport}); |
1192 | ||
1193 | if ($rule->{dport}) { | |
1194 | if ($rule->{proto} && $rule->{proto} eq 'icmp') { | |
1195 | # Note: we use dport to store --icmp-type | |
1196 | die "unknown icmp-type '$rule->{dport}'\n" if !defined($icmp_type_names->{$rule->{dport}}); | |
41524a58 | 1197 | push @cmd, "-m icmp --icmp-type $rule->{dport}"; |
181390b0 | 1198 | } else { |
e5076eee | 1199 | if ($nbdport > 1) { |
181390b0 | 1200 | if ($multiport == 2) { |
41524a58 | 1201 | push @cmd, "--ports $rule->{dport}"; |
181390b0 | 1202 | } else { |
41524a58 | 1203 | push @cmd, "--dports $rule->{dport}"; |
181390b0 | 1204 | } |
e3a1d391 | 1205 | } else { |
41524a58 | 1206 | push @cmd, "--dport $rule->{dport}"; |
e3a1d391 | 1207 | } |
4b586518 DM |
1208 | } |
1209 | } | |
4b586518 | 1210 | |
181390b0 | 1211 | if ($rule->{sport}) { |
e5076eee | 1212 | if ($nbsport > 1) { |
41524a58 | 1213 | push @cmd, "--sports $rule->{sport}" if $multiport != 2; |
181390b0 | 1214 | } else { |
41524a58 | 1215 | push @cmd, "--sport $rule->{sport}"; |
181390b0 | 1216 | } |
4b586518 | 1217 | } |
181390b0 DM |
1218 | } elsif ($rule->{dport} || $rule->{sport}) { |
1219 | warn "ignoring destination port '$rule->{dport}' - no protocol specified\n" if $rule->{dport}; | |
1220 | warn "ignoring source port '$rule->{sport}' - no protocol specified\n" if $rule->{sport}; | |
4b586518 DM |
1221 | } |
1222 | ||
41524a58 | 1223 | push @cmd, "-m addrtype --dst-type $rule->{dsttype}" if $rule->{dsttype}; |
4e6112f9 DM |
1224 | |
1225 | if (my $action = $rule->{action}) { | |
cbb5d6f3 | 1226 | $action = $actions->{$action} if defined($actions->{$action}); |
4e6112f9 | 1227 | $goto = 1 if !defined($goto) && $action eq 'PVEFW-SET-ACCEPT-MARK'; |
41524a58 | 1228 | push @cmd, $goto ? "-g $action" : "-j $action"; |
181390b0 | 1229 | } |
3a616aa0 | 1230 | |
eba0fb64 DM |
1231 | return scalar(@cmd) ? join(' ', @cmd) : undef; |
1232 | } | |
1233 | ||
1234 | sub ruleset_generate_rule { | |
ba791b1f | 1235 | my ($ruleset, $chain, $rule, $actions, $goto, $cluster_conf) = @_; |
eba0fb64 | 1236 | |
e5076eee DM |
1237 | my $rules; |
1238 | ||
1239 | if ($rule->{macro}) { | |
1240 | $rules = &$apply_macro($rule->{macro}, $rule); | |
1241 | } else { | |
1242 | $rules = [ $rule ]; | |
1243 | } | |
1244 | ||
cbb5d6f3 | 1245 | foreach my $tmp (@$rules) { |
ba791b1f | 1246 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $tmp, $actions, $goto, $cluster_conf)) { |
e5076eee DM |
1247 | ruleset_addrule($ruleset, $chain, $cmdstr); |
1248 | } | |
41524a58 | 1249 | } |
3fa83edf | 1250 | } |
0f168d7b | 1251 | |
eba0fb64 DM |
1252 | sub ruleset_generate_rule_insert { |
1253 | my ($ruleset, $chain, $rule, $actions, $goto) = @_; | |
1254 | ||
e5076eee DM |
1255 | die "implement me" if $rule->{macro}; # not implemented, because not needed so far |
1256 | ||
eba0fb64 DM |
1257 | if (my $cmdstr = ruleset_generate_cmdstr($ruleset, $chain, $rule, $actions, $goto)) { |
1258 | ruleset_insertrule($ruleset, $chain, $cmdstr); | |
1259 | } | |
1260 | } | |
3fa83edf DM |
1261 | |
1262 | sub ruleset_create_chain { | |
1263 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1264 | |
d050c724 | 1265 | die "Invalid chain name '$chain' (28 char max)\n" if length($chain) > 28; |
782c4cde | 1266 | die "chain name may not contain collons\n" if $chain =~ m/:/; # because of log format |
d050c724 | 1267 | |
3fa83edf DM |
1268 | die "chain '$chain' already exists\n" if $ruleset->{$chain}; |
1269 | ||
1270 | $ruleset->{$chain} = []; | |
3a616aa0 AD |
1271 | } |
1272 | ||
3fa83edf DM |
1273 | sub ruleset_chain_exist { |
1274 | my ($ruleset, $chain) = @_; | |
3a616aa0 | 1275 | |
3fa83edf DM |
1276 | return $ruleset->{$chain} ? 1 : undef; |
1277 | } | |
3a616aa0 | 1278 | |
3fa83edf DM |
1279 | sub ruleset_addrule { |
1280 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1281 | |
3fa83edf | 1282 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1283 | |
3fa83edf DM |
1284 | push @{$ruleset->{$chain}}, "-A $chain $rule"; |
1285 | } | |
3a616aa0 | 1286 | |
3fa83edf DM |
1287 | sub ruleset_insertrule { |
1288 | my ($ruleset, $chain, $rule) = @_; | |
3a616aa0 | 1289 | |
3fa83edf | 1290 | die "no such chain '$chain'\n" if !$ruleset->{$chain}; |
3a616aa0 | 1291 | |
3fa83edf DM |
1292 | unshift @{$ruleset->{$chain}}, "-A $chain $rule"; |
1293 | } | |
3a616aa0 | 1294 | |
782c4cde DM |
1295 | sub get_log_rule_base { |
1296 | my ($chain, $vmid, $msg, $loglevel) = @_; | |
cbb5d6f3 | 1297 | |
782c4cde DM |
1298 | die "internal error - no log level" if !defined($loglevel); |
1299 | ||
1300 | $vmid = 0 if !defined($vmid); | |
1301 | ||
cbb5d6f3 | 1302 | # Note: we use special format for prefix to pass further |
782c4cde DM |
1303 | # info to log daemon (VMID, LOGVELEL and CHAIN) |
1304 | ||
1305 | return "-j NFLOG --nflog-prefix \":$vmid:$loglevel:$chain: $msg\""; | |
1306 | } | |
1307 | ||
1308 | sub ruleset_addlog { | |
1309 | my ($ruleset, $chain, $vmid, $msg, $loglevel, $rule) = @_; | |
1310 | ||
1311 | return if !defined($loglevel); | |
1312 | ||
1313 | my $logrule = get_log_rule_base($chain, $vmid, $msg, $loglevel); | |
1314 | ||
1315 | $logrule = "$rule $logrule" if defined($rule); | |
1316 | ||
1317 | ruleset_addrule($ruleset, $chain, $logrule) | |
1318 | } | |
1319 | ||
3fa83edf | 1320 | sub generate_bridge_chains { |
530c005e DM |
1321 | my ($ruleset, $hostfw_conf, $bridge, $routing_table) = @_; |
1322 | ||
1323 | my $options = $hostfw_conf->{options} || {}; | |
1324 | ||
1325 | die "error: detected direct route to bridge '$bridge'\n" | |
1326 | if !$options->{allow_bridge_route} && $routing_table->{$bridge}; | |
2f3d8d76 | 1327 | |
5927497d DM |
1328 | if (!ruleset_chain_exist($ruleset, "$bridge-FW")) { |
1329 | ruleset_create_chain($ruleset, "$bridge-FW"); | |
3cc81077 DM |
1330 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o $bridge -m physdev --physdev-is-out -j $bridge-FW"); |
1331 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i $bridge -m physdev --physdev-is-in -j $bridge-FW"); | |
3fa83edf | 1332 | } |
3a616aa0 | 1333 | |
3fa83edf DM |
1334 | if (!ruleset_chain_exist($ruleset, "$bridge-OUT")) { |
1335 | ruleset_create_chain($ruleset, "$bridge-OUT"); | |
3cc81077 DM |
1336 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-in -j $bridge-OUT"); |
1337 | ruleset_insertrule($ruleset, "PVEFW-INPUT", "-i $bridge -m physdev --physdev-is-in -j $bridge-OUT"); | |
9fcad984 AD |
1338 | } |
1339 | ||
1340 | if (!ruleset_chain_exist($ruleset, "$bridge-IN")) { | |
1341 | ruleset_create_chain($ruleset, "$bridge-IN"); | |
3cc81077 | 1342 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j $bridge-IN"); |
fdb0bf20 | 1343 | ruleset_addrule($ruleset, "$bridge-FW", "-m mark --mark 1 -j ACCEPT"); |
7323008d | 1344 | # accept traffic to unmanaged bridge ports |
3cc81077 | 1345 | ruleset_addrule($ruleset, "$bridge-FW", "-m physdev --physdev-is-out -j ACCEPT "); |
3fa83edf DM |
1346 | } |
1347 | } | |
3a616aa0 | 1348 | |
ead850e8 | 1349 | sub ruleset_add_chain_policy { |
782c4cde | 1350 | my ($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action) = @_; |
ead850e8 DM |
1351 | |
1352 | if ($policy eq 'ACCEPT') { | |
1353 | ||
1354 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT' }, | |
1355 | { ACCEPT => $accept_action}); | |
1356 | ||
1357 | } elsif ($policy eq 'DROP') { | |
1358 | ||
1359 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Drop"); | |
1360 | ||
782c4cde | 1361 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1362 | |
1363 | ruleset_addrule($ruleset, $chain, "-j DROP"); | |
1364 | } elsif ($policy eq 'REJECT') { | |
1365 | ruleset_addrule($ruleset, $chain, "-j PVEFW-Reject"); | |
1366 | ||
782c4cde | 1367 | ruleset_addlog($ruleset, $chain, $vmid, "policy $policy: ", $loglevel); |
ead850e8 DM |
1368 | |
1369 | ruleset_addrule($ruleset, $chain, "-g PVEFW-reject"); | |
1370 | } else { | |
1371 | # should not happen | |
1372 | die "internal error: unknown policy '$policy'"; | |
1373 | } | |
1374 | } | |
1375 | ||
9e15114a DM |
1376 | sub ruleset_create_vm_chain { |
1377 | my ($ruleset, $chain, $options, $macaddr, $direction) = @_; | |
3a616aa0 | 1378 | |
9e15114a | 1379 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1380 | my $accept = generate_nfqueue($options); |
3a616aa0 | 1381 | |
bee633ab | 1382 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
9e15114a | 1383 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); |
bee633ab DM |
1384 | } |
1385 | ||
ce15d90b | 1386 | if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) { |
76a2d1e7 | 1387 | if ($direction eq 'OUT') { |
cbb5d6f3 | 1388 | ruleset_generate_rule($ruleset, $chain, { action => 'PVEFW-SET-ACCEPT-MARK', |
0f168d7b | 1389 | proto => 'udp', sport => 68, dport => 67 }); |
76a2d1e7 | 1390 | } else { |
cbb5d6f3 | 1391 | ruleset_generate_rule($ruleset, $chain, { action => 'ACCEPT', |
0f168d7b | 1392 | proto => 'udp', sport => 67, dport => 68 }); |
76a2d1e7 | 1393 | } |
ce15d90b DM |
1394 | } |
1395 | ||
bee633ab | 1396 | if ($options->{tcpflags}) { |
9e15114a | 1397 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); |
bee633ab DM |
1398 | } |
1399 | ||
9e15114a | 1400 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
cbb5d6f3 | 1401 | if ($direction eq 'OUT') { |
b47ecc88 | 1402 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -g PVEFW-SET-ACCEPT-MARK"); |
cbb5d6f3 | 1403 | } else { |
b47ecc88 AD |
1404 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
1405 | } | |
cbb5d6f3 | 1406 | |
b21aca2c DM |
1407 | if ($direction eq 'OUT') { |
1408 | if (defined($macaddr) && !(defined($options->{macfilter}) && $options->{macfilter} == 0)) { | |
9e15114a | 1409 | ruleset_addrule($ruleset, $chain, "-m mac ! --mac-source $macaddr -j DROP"); |
b21aca2c | 1410 | } |
9e15114a | 1411 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
c29f55c9 | 1412 | } |
9e15114a DM |
1413 | } |
1414 | ||
1415 | sub ruleset_generate_vm_rules { | |
fca39c2c | 1416 | my ($ruleset, $rules, $cluster_conf, $chain, $netid, $direction, $options) = @_; |
9e15114a DM |
1417 | |
1418 | my $lc_direction = lc($direction); | |
c29f55c9 | 1419 | |
92e976b3 DM |
1420 | foreach my $rule (@$rules) { |
1421 | next if $rule->{iface} && $rule->{iface} ne $netid; | |
ea9e5116 | 1422 | next if !$rule->{enable}; |
92e976b3 | 1423 | if ($rule->{type} eq 'group') { |
cbb5d6f3 | 1424 | my $group_chain = "GROUP-$rule->{action}-$direction"; |
92e976b3 | 1425 | if(!ruleset_chain_exist($ruleset, $group_chain)){ |
fca39c2c | 1426 | generate_group_rules($ruleset, $cluster_conf, $rule->{action}); |
92e976b3 | 1427 | } |
9e15114a | 1428 | ruleset_addrule($ruleset, $chain, "-j $group_chain"); |
b47ecc88 AD |
1429 | if ($direction eq 'OUT'){ |
1430 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j RETURN"); | |
1431 | }else{ | |
1432 | my $accept = generate_nfqueue($options); | |
1433 | ruleset_addrule($ruleset, $chain, "-m mark --mark 1 -j $accept"); | |
1434 | } | |
1435 | ||
92e976b3 DM |
1436 | } else { |
1437 | next if $rule->{type} ne $lc_direction; | |
1438 | if ($direction eq 'OUT') { | |
cbb5d6f3 | 1439 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 1440 | { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
4e6112f9 | 1441 | } else { |
b47ecc88 | 1442 | my $accept = generate_nfqueue($options); |
ba791b1f | 1443 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept , REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
3a616aa0 | 1444 | } |
4e6112f9 | 1445 | } |
3a616aa0 | 1446 | } |
9e15114a DM |
1447 | } |
1448 | ||
b47ecc88 AD |
1449 | sub generate_nfqueue { |
1450 | my ($options) = @_; | |
1451 | ||
1452 | my $action = ""; | |
1453 | if($options->{ips}){ | |
1454 | $action = "NFQUEUE"; | |
1455 | if($options->{ips_queues} && $options->{ips_queues} =~ m/^(\d+)(:(\d+))?$/) { | |
1456 | if(defined($3) && defined($1)) { | |
1457 | $action .= " --queue-balance $1:$3"; | |
1458 | }elsif (defined($1)) { | |
1459 | $action .= " --queue-num $1"; | |
1460 | } | |
1461 | } | |
1462 | $action .= " --queue-bypass"; | |
1463 | }else{ | |
1464 | $action = "ACCEPT"; | |
1465 | } | |
1466 | ||
1467 | return $action; | |
1468 | } | |
1469 | ||
da6fc60b AD |
1470 | sub ruleset_generate_vm_ipsrules { |
1471 | my ($ruleset, $options, $direction, $iface, $bridge) = @_; | |
1472 | ||
1473 | if ($options->{ips} && $direction eq 'IN') { | |
1474 | my $nfqueue = generate_nfqueue($options); | |
1475 | ||
1476 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1477 | ruleset_create_chain($ruleset, "PVEFW-IPS"); | |
1478 | } | |
1479 | ||
1480 | if (!ruleset_chain_exist($ruleset, "$bridge-IPS")) { | |
1481 | ruleset_create_chain($ruleset, "$bridge-IPS"); | |
1482 | ruleset_insertrule($ruleset, "PVEFW-IPS", "-o $bridge -m physdev --physdev-is-out -j $bridge-IPS"); | |
1483 | } | |
1484 | ||
1485 | ruleset_addrule($ruleset, "$bridge-IPS", "-m physdev --physdev-out $iface --physdev-is-bridged -j $nfqueue"); | |
1486 | } | |
1487 | } | |
1488 | ||
9e15114a | 1489 | sub generate_venet_rules_direction { |
fca39c2c | 1490 | my ($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, $direction) = @_; |
9e15114a | 1491 | |
5176619e | 1492 | parse_address_list($ip); # make sure we have a valid $ip list |
9e15114a DM |
1493 | |
1494 | my $lc_direction = lc($direction); | |
1495 | ||
1496 | my $rules = $vmfw_conf->{rules}; | |
1497 | ||
1498 | my $options = $vmfw_conf->{options}; | |
1499 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1500 | ||
1501 | my $chain = "venet0-$vmid-$direction"; | |
1502 | ||
1503 | ruleset_create_vm_chain($ruleset, $chain, $options, undef, $direction); | |
1504 | ||
fca39c2c | 1505 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $chain, 'venet', $direction); |
9e15114a DM |
1506 | |
1507 | # implement policy | |
1508 | my $policy; | |
1509 | ||
1510 | if ($direction eq 'OUT') { | |
1511 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default | |
1512 | } else { | |
1513 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default | |
1514 | } | |
1515 | ||
b47ecc88 AD |
1516 | my $accept = generate_nfqueue($options); |
1517 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1518 | ruleset_add_chain_policy($ruleset, $chain, $vmid, $policy, $loglevel, $accept_action); |
9e15114a | 1519 | |
38485daa | 1520 | # plug into FORWARD, INPUT and OUTPUT chain |
eba0fb64 DM |
1521 | if ($direction eq 'OUT') { |
1522 | ruleset_generate_rule_insert($ruleset, "PVEFW-FORWARD", { | |
1523 | action => $chain, | |
1524 | source => $ip, | |
1525 | iface_in => 'venet0'}); | |
38485daa DM |
1526 | |
1527 | ruleset_generate_rule_insert($ruleset, "PVEFW-INPUT", { | |
1528 | action => $chain, | |
1529 | source => $ip, | |
1530 | iface_in => 'venet0'}); | |
eba0fb64 DM |
1531 | } else { |
1532 | ruleset_generate_rule($ruleset, "PVEFW-FORWARD", { | |
1533 | action => $chain, | |
1534 | dest => $ip, | |
1535 | iface_out => 'venet0'}); | |
38485daa DM |
1536 | |
1537 | ruleset_generate_rule($ruleset, "PVEFW-OUTPUT", { | |
1538 | action => $chain, | |
1539 | dest => $ip, | |
1540 | iface_out => 'venet0'}); | |
eba0fb64 | 1541 | } |
9e15114a DM |
1542 | } |
1543 | ||
1544 | sub generate_tap_rules_direction { | |
fca39c2c | 1545 | my ($ruleset, $cluster_conf, $iface, $netid, $macaddr, $vmfw_conf, $vmid, $bridge, $direction) = @_; |
9e15114a DM |
1546 | |
1547 | my $lc_direction = lc($direction); | |
1548 | ||
1549 | my $rules = $vmfw_conf->{rules}; | |
1550 | ||
1551 | my $options = $vmfw_conf->{options}; | |
1552 | my $loglevel = get_option_log_level($options, "log_level_${lc_direction}"); | |
1553 | ||
1554 | my $tapchain = "$iface-$direction"; | |
1555 | ||
1556 | ruleset_create_vm_chain($ruleset, $tapchain, $options, $macaddr, $direction); | |
1557 | ||
fca39c2c | 1558 | ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $tapchain, $netid, $direction, $options); |
3a616aa0 | 1559 | |
da6fc60b AD |
1560 | ruleset_generate_vm_ipsrules($ruleset, $options, $direction, $iface, $bridge); |
1561 | ||
ccae0b50 DM |
1562 | # implement policy |
1563 | my $policy; | |
1564 | ||
1565 | if ($direction eq 'OUT') { | |
72f63fde | 1566 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
ccae0b50 | 1567 | } else { |
72f63fde | 1568 | $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
ccae0b50 DM |
1569 | } |
1570 | ||
b47ecc88 AD |
1571 | my $accept = generate_nfqueue($options); |
1572 | my $accept_action = $direction eq 'OUT' ? "PVEFW-SET-ACCEPT-MARK" : $accept; | |
782c4cde | 1573 | ruleset_add_chain_policy($ruleset, $tapchain, $vmid, $policy, $loglevel, $accept_action); |
3a616aa0 | 1574 | |
3fa83edf | 1575 | # plug the tap chain to bridge chain |
3cc81077 DM |
1576 | if ($direction eq 'IN') { |
1577 | ruleset_insertrule($ruleset, "$bridge-IN", | |
1578 | "-m physdev --physdev-is-bridged --physdev-out $iface -j $tapchain"); | |
1579 | } else { | |
1580 | ruleset_insertrule($ruleset, "$bridge-OUT", | |
1581 | "-m physdev --physdev-in $iface -j $tapchain"); | |
1582 | } | |
3a616aa0 AD |
1583 | } |
1584 | ||
d18c1e2b | 1585 | sub enable_host_firewall { |
fca39c2c | 1586 | my ($ruleset, $hostfw_conf, $cluster_conf) = @_; |
0bd5f137 | 1587 | |
51bae274 | 1588 | # fixme: allow security groups |
0bd5f137 | 1589 | |
92e976b3 DM |
1590 | my $options = $hostfw_conf->{options}; |
1591 | my $rules = $hostfw_conf->{rules}; | |
178a63be | 1592 | |
3fa83edf | 1593 | # host inbound firewall |
dec84fcd DM |
1594 | my $chain = "PVEFW-HOST-IN"; |
1595 | ruleset_create_chain($ruleset, $chain); | |
0bd5f137 | 1596 | |
178a63be DM |
1597 | my $loglevel = get_option_log_level($options, "log_level_in"); |
1598 | ||
4ac863a6 DM |
1599 | if (!(defined($options->{nosmurfs}) && $options->{nosmurfs} == 0)) { |
1600 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID,NEW -j PVEFW-smurfs"); | |
1601 | } | |
1602 | ||
fb424a00 DM |
1603 | if ($options->{tcpflags}) { |
1604 | ruleset_addrule($ruleset, $chain, "-p tcp -j PVEFW-tcpflags"); | |
1605 | } | |
1606 | ||
7fab95bc DM |
1607 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1608 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1609 | ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT"); |
1610 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1611 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1612 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1613 | |
23e888f8 DM |
1614 | # we use RETURN because we need to check also tap rules |
1615 | my $accept_action = 'RETURN'; | |
1616 | ||
92e976b3 DM |
1617 | foreach my $rule (@$rules) { |
1618 | next if $rule->{type} ne 'in'; | |
ba791b1f | 1619 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
0bd5f137 AD |
1620 | } |
1621 | ||
23e888f8 | 1622 | # implement input policy |
72f63fde | 1623 | my $policy = $options->{policy_in} || 'DROP'; # allow nothing by default |
782c4cde | 1624 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
0bd5f137 | 1625 | |
3fa83edf | 1626 | # host outbound firewall |
aadd745e | 1627 | $chain = "PVEFW-HOST-OUT"; |
dec84fcd DM |
1628 | ruleset_create_chain($ruleset, $chain); |
1629 | ||
178a63be DM |
1630 | $loglevel = get_option_log_level($options, "log_level_out"); |
1631 | ||
7fab95bc DM |
1632 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP"); |
1633 | ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT"); | |
dec84fcd DM |
1634 | ruleset_addrule($ruleset, $chain, "-o lo -j ACCEPT"); |
1635 | ruleset_addrule($ruleset, $chain, "-m addrtype --dst-type MULTICAST -j ACCEPT"); | |
97156ecc | 1636 | ruleset_addrule($ruleset, $chain, "-p udp -m conntrack --ctstate NEW --dport 5404:5405 -j ACCEPT"); |
dec84fcd | 1637 | ruleset_addrule($ruleset, $chain, "-p udp -m udp --dport 9000 -j ACCEPT"); #corosync |
0bd5f137 | 1638 | |
23e888f8 DM |
1639 | # we use RETURN because we may want to check other thigs later |
1640 | $accept_action = 'RETURN'; | |
1641 | ||
92e976b3 DM |
1642 | foreach my $rule (@$rules) { |
1643 | next if $rule->{type} ne 'out'; | |
ba791b1f | 1644 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => $accept_action, REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
0bd5f137 AD |
1645 | } |
1646 | ||
23e888f8 | 1647 | # implement output policy |
72f63fde | 1648 | $policy = $options->{policy_out} || 'ACCEPT'; # allow everything by default |
782c4cde | 1649 | ruleset_add_chain_policy($ruleset, $chain, 0, $policy, $loglevel, $accept_action); |
6158271d | 1650 | |
dec84fcd DM |
1651 | ruleset_addrule($ruleset, "PVEFW-OUTPUT", "-j PVEFW-HOST-OUT"); |
1652 | ruleset_addrule($ruleset, "PVEFW-INPUT", "-j PVEFW-HOST-IN"); | |
9d31b418 AD |
1653 | } |
1654 | ||
1655 | sub generate_group_rules { | |
fca39c2c | 1656 | my ($ruleset, $cluster_conf, $group) = @_; |
c6f5cc88 | 1657 | die "no such security group '$group'\n" if !$cluster_conf->{groups}->{$group}; |
9d31b418 | 1658 | |
c6f5cc88 | 1659 | my $rules = $cluster_conf->{groups}->{$group}; |
6158271d | 1660 | |
3fa83edf | 1661 | my $chain = "GROUP-${group}-IN"; |
9d31b418 | 1662 | |
3fa83edf | 1663 | ruleset_create_chain($ruleset, $chain); |
b47ecc88 | 1664 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1665 | |
92e976b3 DM |
1666 | foreach my $rule (@$rules) { |
1667 | next if $rule->{type} ne 'in'; | |
ba791b1f | 1668 | ruleset_generate_rule($ruleset, $chain, $rule, { ACCEPT => "PVEFW-SET-ACCEPT-MARK", REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 AD |
1669 | } |
1670 | ||
3fa83edf | 1671 | $chain = "GROUP-${group}-OUT"; |
9d31b418 | 1672 | |
3fa83edf | 1673 | ruleset_create_chain($ruleset, $chain); |
4e6112f9 | 1674 | ruleset_addrule($ruleset, $chain, "-j MARK --set-mark 0"); # clear mark |
9d31b418 | 1675 | |
92e976b3 DM |
1676 | foreach my $rule (@$rules) { |
1677 | next if $rule->{type} ne 'out'; | |
1678 | # we use PVEFW-SET-ACCEPT-MARK (Instead of ACCEPT) because we need to | |
1679 | # check also other tap rules later | |
cbb5d6f3 | 1680 | ruleset_generate_rule($ruleset, $chain, $rule, |
ba791b1f | 1681 | { ACCEPT => 'PVEFW-SET-ACCEPT-MARK', REJECT => "PVEFW-reject" }, undef, $cluster_conf); |
9d31b418 | 1682 | } |
9d31b418 AD |
1683 | } |
1684 | ||
51bae274 DM |
1685 | my $MAX_NETS = 32; |
1686 | my $valid_netdev_names = {}; | |
1687 | for (my $i = 0; $i < $MAX_NETS; $i++) { | |
1688 | $valid_netdev_names->{"net$i"} = 1; | |
1689 | } | |
5e1267a5 | 1690 | |
51bae274 DM |
1691 | sub parse_fw_rule { |
1692 | my ($line, $need_iface, $allow_groups) = @_; | |
5e1267a5 | 1693 | |
92e976b3 | 1694 | my ($type, $action, $iface, $source, $dest, $proto, $dport, $sport); |
51bae274 | 1695 | |
11bac5c2 | 1696 | # we can add single line comments to the end of the rule |
30c1ae52 | 1697 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; |
11bac5c2 DM |
1698 | |
1699 | # we can disable a rule when prefixed with '|' | |
ea9e5116 DM |
1700 | my $enable = 1; |
1701 | ||
1702 | $enable = 0 if $line =~ s/^\|//; | |
51bae274 DM |
1703 | |
1704 | my @data = split(/\s+/, $line); | |
92e976b3 | 1705 | my $expected_elements = $need_iface ? 8 : 7; |
51bae274 DM |
1706 | |
1707 | die "wrong number of rule elements\n" if scalar(@data) > $expected_elements; | |
1708 | ||
1709 | if ($need_iface) { | |
92e976b3 | 1710 | ($type, $action, $iface, $source, $dest, $proto, $dport, $sport) = @data |
51bae274 | 1711 | } else { |
92e976b3 | 1712 | ($type, $action, $source, $dest, $proto, $dport, $sport) = @data; |
51bae274 DM |
1713 | } |
1714 | ||
92e976b3 | 1715 | die "incomplete rule\n" if ! ($type && $action); |
51bae274 | 1716 | |
961b4928 | 1717 | my $macro; |
961b4928 | 1718 | |
92e976b3 DM |
1719 | $type = lc($type); |
1720 | ||
1721 | if ($type eq 'in' || $type eq 'out') { | |
1722 | if ($action =~ m/^(ACCEPT|DROP|REJECT)$/) { | |
1723 | # OK | |
1724 | } elsif ($action =~ m/^(\S+)\((ACCEPT|DROP|REJECT)\)$/) { | |
e5076eee DM |
1725 | $action = $2; |
1726 | my $preferred_name = $pve_fw_preferred_macro_names->{lc($1)}; | |
1727 | die "unknown macro '$1'\n" if !$preferred_name; | |
1728 | $macro = $preferred_name; | |
92e976b3 DM |
1729 | } else { |
1730 | die "unknown action '$action'\n"; | |
1731 | } | |
1732 | } elsif ($type eq 'group') { | |
1733 | die "wrong number of rule elements\n" if scalar(@data) != 3; | |
1734 | die "groups disabled\n" if !$allow_groups; | |
1735 | ||
cbb5d6f3 | 1736 | die "invalid characters in group name\n" if $action !~ m/^[A-Za-z0-9_\-]+$/; |
51bae274 | 1737 | } else { |
92e976b3 | 1738 | die "unknown rule type '$type'\n"; |
51bae274 DM |
1739 | } |
1740 | ||
1741 | if ($need_iface) { | |
1742 | $iface = undef if $iface && $iface eq '-'; | |
51bae274 DM |
1743 | } |
1744 | ||
1745 | $proto = undef if $proto && $proto eq '-'; | |
54cd19a8 | 1746 | pve_fw_verify_protocol_spec($proto) if $proto; |
51bae274 DM |
1747 | |
1748 | $source = undef if $source && $source eq '-'; | |
1749 | $dest = undef if $dest && $dest eq '-'; | |
1750 | ||
1751 | $dport = undef if $dport && $dport eq '-'; | |
1752 | $sport = undef if $sport && $sport eq '-'; | |
1753 | ||
e5076eee DM |
1754 | parse_port_name_number_or_range($dport) if defined($dport); |
1755 | parse_port_name_number_or_range($sport) if defined($sport); | |
ba791b1f | 1756 | |
d72beb8e DM |
1757 | parse_address_list($source) if $source; |
1758 | parse_address_list($dest) if $dest; | |
51bae274 | 1759 | |
e5076eee | 1760 | return { |
92e976b3 | 1761 | type => $type, |
ea9e5116 | 1762 | enable => $enable, |
11bac5c2 | 1763 | comment => $comment, |
51bae274 | 1764 | action => $action, |
e5076eee | 1765 | macro => $macro, |
51bae274 DM |
1766 | iface => $iface, |
1767 | source => $source, | |
1768 | dest => $dest, | |
51bae274 DM |
1769 | proto => $proto, |
1770 | dport => $dport, | |
1771 | sport => $sport, | |
51bae274 DM |
1772 | }; |
1773 | } | |
1774 | ||
2d404ffc | 1775 | sub parse_vmfw_option { |
85c6eaed DM |
1776 | my ($line) = @_; |
1777 | ||
1778 | my ($opt, $value); | |
1779 | ||
178a63be DM |
1780 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; |
1781 | ||
b47ecc88 | 1782 | if ($line =~ m/^(enable|dhcp|macfilter|nosmurfs|tcpflags|ips):\s*(0|1)\s*$/i) { |
9c6b6efd DM |
1783 | $opt = lc($1); |
1784 | $value = int($2); | |
178a63be DM |
1785 | } elsif ($line =~ m/^(log_level_in|log_level_out):\s*(($loglevels)\s*)?$/i) { |
1786 | $opt = lc($1); | |
1787 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1788 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
85c6eaed DM |
1789 | $opt = lc($1); |
1790 | $value = uc($3); | |
b47ecc88 AD |
1791 | } elsif ($line =~ m/^(ips_queues):\s*((\d+)(:(\d+))?)\s*$/i) { |
1792 | $opt = lc($1); | |
1793 | $value = $2; | |
9c6b6efd | 1794 | } else { |
85c6eaed DM |
1795 | chomp $line; |
1796 | die "can't parse option '$line'\n" | |
1797 | } | |
1798 | ||
1799 | return ($opt, $value); | |
1800 | } | |
1801 | ||
2d404ffc DM |
1802 | sub parse_hostfw_option { |
1803 | my ($line) = @_; | |
1804 | ||
1805 | my ($opt, $value); | |
1806 | ||
1807 | my $loglevels = "emerg|alert|crit|err|warning|notice|info|debug|nolog"; | |
1808 | ||
cc10e5d7 | 1809 | if ($line =~ m/^(enable|dhcp|nosmurfs|tcpflags|allow_bridge_route|optimize):\s*(0|1)\s*$/i) { |
2d404ffc DM |
1810 | $opt = lc($1); |
1811 | $value = int($2); | |
178a63be | 1812 | } elsif ($line =~ m/^(log_level_in|log_level_out|tcp_flags_log_level|smurf_log_level):\s*(($loglevels)\s*)?$/i) { |
2d404ffc DM |
1813 | $opt = lc($1); |
1814 | $value = $2 ? lc($3) : ''; | |
72f63fde | 1815 | } elsif ($line =~ m/^(policy_(in|out)):\s*(ACCEPT|DROP|REJECT)\s*$/i) { |
2d404ffc DM |
1816 | $opt = lc($1); |
1817 | $value = uc($3); | |
490cdead DM |
1818 | } elsif ($line =~ m/^(nf_conntrack_max):\s*(\d+)\s*$/i) { |
1819 | $opt = lc($1); | |
1820 | $value = int($2); | |
2d404ffc DM |
1821 | } else { |
1822 | chomp $line; | |
1823 | die "can't parse option '$line'\n" | |
1824 | } | |
1825 | ||
1826 | return ($opt, $value); | |
1827 | } | |
1828 | ||
c6f5cc88 DM |
1829 | sub parse_clusterfw_option { |
1830 | my ($line) = @_; | |
1831 | ||
1832 | my ($opt, $value); | |
1833 | ||
1834 | if ($line =~ m/^(enable):\s*(0|1)\s*$/i) { | |
1835 | $opt = lc($1); | |
1836 | $value = int($2); | |
1837 | } else { | |
1838 | chomp $line; | |
1839 | die "can't parse option '$line'\n" | |
1840 | } | |
1841 | ||
1842 | return ($opt, $value); | |
1843 | } | |
1844 | ||
51bae274 DM |
1845 | sub parse_vm_fw_rules { |
1846 | my ($filename, $fh) = @_; | |
1847 | ||
92e976b3 | 1848 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1849 | |
1850 | my $section; | |
1851 | ||
e7b35711 DM |
1852 | my $digest = Digest::SHA->new('sha1'); |
1853 | ||
5e1267a5 | 1854 | while (defined(my $line = <$fh>)) { |
e7b35711 DM |
1855 | $digest->add($line); |
1856 | ||
5e1267a5 DM |
1857 | next if $line =~ m/^#/; |
1858 | next if $line =~ m/^\s*$/; | |
1859 | ||
961b4928 DM |
1860 | my $linenr = $fh->input_line_number(); |
1861 | my $prefix = "$filename (line $linenr)"; | |
1862 | ||
85c6eaed | 1863 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
5e1267a5 | 1864 | $section = lc($1); |
85c6eaed | 1865 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1866 | next; |
1867 | } | |
51bae274 | 1868 | if (!$section) { |
961b4928 | 1869 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1870 | next; |
1871 | } | |
1872 | ||
85c6eaed DM |
1873 | next if !$res->{$section}; # skip undefined section |
1874 | ||
1875 | if ($section eq 'options') { | |
6158271d | 1876 | eval { |
2d404ffc | 1877 | my ($opt, $value) = parse_vmfw_option($line); |
85c6eaed DM |
1878 | $res->{options}->{$opt} = $value; |
1879 | }; | |
1880 | warn "$prefix: $@" if $@; | |
1881 | next; | |
1882 | } | |
1883 | ||
e5076eee DM |
1884 | my $rule; |
1885 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
51bae274 | 1886 | if (my $err = $@) { |
961b4928 | 1887 | warn "$prefix: $err"; |
5e1267a5 DM |
1888 | next; |
1889 | } | |
1890 | ||
e5076eee | 1891 | push @{$res->{$section}}, $rule; |
51bae274 DM |
1892 | } |
1893 | ||
e7b35711 DM |
1894 | $res->{digest} = $digest->b64digest; |
1895 | ||
51bae274 DM |
1896 | return $res; |
1897 | } | |
1898 | ||
1899 | sub parse_host_fw_rules { | |
1900 | my ($filename, $fh) = @_; | |
1901 | ||
92e976b3 | 1902 | my $res = { rules => [], options => {}}; |
51bae274 DM |
1903 | |
1904 | my $section; | |
1905 | ||
8b27beb9 DM |
1906 | my $digest = Digest::SHA->new('sha1'); |
1907 | ||
51bae274 | 1908 | while (defined(my $line = <$fh>)) { |
8b27beb9 DM |
1909 | $digest->add($line); |
1910 | ||
51bae274 DM |
1911 | next if $line =~ m/^#/; |
1912 | next if $line =~ m/^\s*$/; | |
1913 | ||
961b4928 DM |
1914 | my $linenr = $fh->input_line_number(); |
1915 | my $prefix = "$filename (line $linenr)"; | |
1916 | ||
2d404ffc | 1917 | if ($line =~ m/^\[(\S+)\]\s*$/i) { |
51bae274 | 1918 | $section = lc($1); |
2d404ffc | 1919 | warn "$prefix: ignore unknown section '$section'\n" if !$res->{$section}; |
5e1267a5 DM |
1920 | next; |
1921 | } | |
51bae274 | 1922 | if (!$section) { |
961b4928 | 1923 | warn "$prefix: skip line - no section"; |
5e1267a5 DM |
1924 | next; |
1925 | } | |
1926 | ||
2d404ffc DM |
1927 | next if !$res->{$section}; # skip undefined section |
1928 | ||
1929 | if ($section eq 'options') { | |
1930 | eval { | |
2d404ffc DM |
1931 | my ($opt, $value) = parse_hostfw_option($line); |
1932 | $res->{options}->{$opt} = $value; | |
1933 | }; | |
1934 | warn "$prefix: $@" if $@; | |
1935 | next; | |
1936 | } | |
1937 | ||
e5076eee DM |
1938 | my $rule; |
1939 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
ecbea048 | 1940 | if (my $err = $@) { |
961b4928 | 1941 | warn "$prefix: $err"; |
ecbea048 | 1942 | next; |
ecbea048 | 1943 | } |
cbb5d6f3 | 1944 | |
e5076eee | 1945 | push @{$res->{$section}}, $rule; |
51bae274 | 1946 | } |
ecbea048 | 1947 | |
cbb5d6f3 | 1948 | $res->{digest} = $digest->b64digest; |
8b27beb9 | 1949 | |
51bae274 DM |
1950 | return $res; |
1951 | } | |
4cdbb3b7 | 1952 | |
c6f5cc88 | 1953 | sub parse_cluster_fw_rules { |
51bae274 | 1954 | my ($filename, $fh) = @_; |
5e1267a5 | 1955 | |
51bae274 DM |
1956 | my $section; |
1957 | my $group; | |
1958 | ||
c4a2e5ae | 1959 | my $res = { rules => [], options => {}, groups => {}, ipset => {} }; |
6158271d | 1960 | |
d1c53b3e DM |
1961 | my $digest = Digest::SHA->new('sha1'); |
1962 | ||
51bae274 | 1963 | while (defined(my $line = <$fh>)) { |
d1c53b3e DM |
1964 | $digest->add($line); |
1965 | ||
51bae274 DM |
1966 | next if $line =~ m/^#/; |
1967 | next if $line =~ m/^\s*$/; | |
1968 | ||
961b4928 DM |
1969 | my $linenr = $fh->input_line_number(); |
1970 | my $prefix = "$filename (line $linenr)"; | |
1971 | ||
c6f5cc88 DM |
1972 | if ($line =~ m/^\[options\]$/i) { |
1973 | $section = 'options'; | |
1974 | next; | |
1975 | } | |
1976 | ||
92e976b3 | 1977 | if ($line =~ m/^\[group\s+(\S+)\]\s*$/i) { |
c6f5cc88 | 1978 | $section = 'groups'; |
92e976b3 | 1979 | $group = lc($1); |
51bae274 DM |
1980 | next; |
1981 | } | |
34cdedfa | 1982 | |
c6f5cc88 DM |
1983 | if ($line =~ m/^\[rules\]$/i) { |
1984 | $section = 'rules'; | |
1985 | next; | |
1986 | } | |
cbb5d6f3 | 1987 | |
936af352 | 1988 | if ($line =~ m/^\[ipset\s+(\S+)\]\s*$/i) { |
34cdedfa AD |
1989 | $section = 'ipset'; |
1990 | $group = lc($1); | |
34cdedfa AD |
1991 | next; |
1992 | } | |
1993 | ||
c6f5cc88 | 1994 | if (!$section) { |
cbb5d6f3 | 1995 | warn "$prefix: skip line - no section\n"; |
51bae274 DM |
1996 | next; |
1997 | } | |
1998 | ||
c6f5cc88 DM |
1999 | if ($section eq 'options') { |
2000 | eval { | |
2001 | my ($opt, $value) = parse_clusterfw_option($line); | |
2002 | $res->{options}->{$opt} = $value; | |
2003 | }; | |
2004 | warn "$prefix: $@" if $@; | |
2005 | } elsif ($section eq 'rules') { | |
2006 | my $rule; | |
2007 | eval { $rule = parse_fw_rule($line, 1, 1); }; | |
2008 | if (my $err = $@) { | |
2009 | warn "$prefix: $err"; | |
2010 | next; | |
2011 | } | |
2012 | push @{$res->{$section}}, $rule; | |
2013 | } elsif ($section eq 'groups') { | |
34cdedfa AD |
2014 | my $rule; |
2015 | eval { $rule = parse_fw_rule($line, 0, 0); }; | |
2016 | if (my $err = $@) { | |
2017 | warn "$prefix: $err"; | |
2018 | next; | |
2019 | } | |
3f95d14a | 2020 | push @{$res->{$section}->{$group}}, $rule; |
3f95d14a | 2021 | } elsif ($section eq 'ipset') { |
9d6f90e6 DM |
2022 | # we can add single line comments to the end of the rule |
2023 | my $comment = decode('utf8', $1) if $line =~ s/#\s*(.*?)\s*$//; | |
2024 | ||
30f1b100 | 2025 | $line =~ m/^(\!)?\s*(\S+)\s*$/; |
2a052ee3 | 2026 | my $nomatch = $1; |
9d6f90e6 | 2027 | my $cidr = $2; |
2a052ee3 | 2028 | |
30f1b100 DM |
2029 | $cidr =~ s|/32$||; |
2030 | ||
2031 | eval { pve_verify_ipv4_or_cidr($cidr); }; | |
2032 | if (my $err = $@) { | |
2033 | warn "$prefix: $cidr - $err"; | |
2a052ee3 AD |
2034 | next; |
2035 | } | |
2a052ee3 | 2036 | |
9d6f90e6 DM |
2037 | my $entry = { cidr => $cidr }; |
2038 | $entry->{nomatch} = 1 if $nomatch; | |
2039 | $entry->{comment} = $comment if $comment; | |
2040 | ||
2041 | push @{$res->{$section}->{$group}}, $entry; | |
51bae274 | 2042 | } |
5e1267a5 DM |
2043 | } |
2044 | ||
d1c53b3e | 2045 | $res->{digest} = $digest->b64digest; |
5e1267a5 DM |
2046 | return $res; |
2047 | } | |
2048 | ||
06320eb0 DM |
2049 | sub run_locked { |
2050 | my ($code, @param) = @_; | |
2051 | ||
2052 | my $timeout = 10; | |
2053 | ||
2054 | my $res = lock_file($pve_fw_lock_filename, $timeout, $code, @param); | |
2055 | ||
2056 | die $@ if $@; | |
2057 | ||
2058 | return $res; | |
2059 | } | |
2060 | ||
5e1267a5 DM |
2061 | sub read_local_vm_config { |
2062 | ||
2063 | my $openvz = {}; | |
5e1267a5 DM |
2064 | my $qemu = {}; |
2065 | ||
c8301d63 | 2066 | my $vmdata = { openvz => $openvz, qemu => $qemu }; |
5e1267a5 | 2067 | |
c8301d63 DM |
2068 | my $vmlist = PVE::Cluster::get_vmlist(); |
2069 | return $vmdata if !$vmlist || !$vmlist->{ids}; | |
2070 | my $ids = $vmlist->{ids}; | |
2071 | ||
2072 | foreach my $vmid (keys %$ids) { | |
2073 | next if !$vmid; # skip VE0 | |
2074 | my $d = $ids->{$vmid}; | |
2075 | next if !$d->{node} || $d->{node} ne $nodename; | |
2076 | next if !$d->{type}; | |
2077 | if ($d->{type} eq 'openvz') { | |
d9fee004 DM |
2078 | if ($have_pve_manager) { |
2079 | my $cfspath = PVE::OpenVZ::cfs_config_path($vmid); | |
2080 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2081 | $openvz->{$vmid} = $conf; | |
2082 | } | |
c8301d63 DM |
2083 | } |
2084 | } elsif ($d->{type} eq 'qemu') { | |
d9fee004 DM |
2085 | if ($have_qemu_server) { |
2086 | my $cfspath = PVE::QemuServer::cfs_config_path($vmid); | |
2087 | if (my $conf = PVE::Cluster::cfs_read_file($cfspath)) { | |
2088 | $qemu->{$vmid} = $conf; | |
2089 | } | |
c8301d63 | 2090 | } |
5e1267a5 DM |
2091 | } |
2092 | } | |
d9fee004 | 2093 | |
5e1267a5 DM |
2094 | return $vmdata; |
2095 | }; | |
2096 | ||
e7b35711 DM |
2097 | sub load_vmfw_conf { |
2098 | my ($vmid) = @_; | |
2099 | ||
2100 | my $vmfw_conf = {}; | |
2101 | ||
2102 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
2103 | if (my $fh = IO::File->new($filename, O_RDONLY)) { | |
2104 | $vmfw_conf = parse_vm_fw_rules($filename, $fh); | |
2105 | } | |
2106 | ||
2107 | return $vmfw_conf; | |
2108 | } | |
2109 | ||
464f933e DM |
2110 | my $format_rules = sub { |
2111 | my ($rules, $need_iface) = @_; | |
2112 | ||
2113 | my $raw = ''; | |
2114 | ||
2115 | foreach my $rule (@$rules) { | |
2116 | if ($rule->{type} eq 'in' || $rule->{type} eq 'out') { | |
2117 | $raw .= '|' if defined($rule->{enable}) && !$rule->{enable}; | |
2118 | $raw .= uc($rule->{type}); | |
7ca36671 DM |
2119 | if ($rule->{macro}) { |
2120 | $raw .= " $rule->{macro}($rule->{action})"; | |
2121 | } else { | |
2122 | $raw .= " " . $rule->{action}; | |
2123 | } | |
464f933e DM |
2124 | $raw .= " " . ($rule->{iface} || '-') if $need_iface; |
2125 | $raw .= " " . ($rule->{source} || '-'); | |
2126 | $raw .= " " . ($rule->{dest} || '-'); | |
2127 | $raw .= " " . ($rule->{proto} || '-'); | |
2128 | $raw .= " " . ($rule->{dport} || '-'); | |
2129 | $raw .= " " . ($rule->{sport} || '-'); | |
cbb5d6f3 | 2130 | $raw .= " # " . encode('utf8', $rule->{comment}) |
464f933e DM |
2131 | if $rule->{comment} && $rule->{comment} !~ m/^\s*$/; |
2132 | $raw .= "\n"; | |
2133 | } else { | |
2134 | die "implement me '$rule->{type}'"; | |
2135 | } | |
2136 | } | |
2137 | ||
2138 | return $raw; | |
2139 | }; | |
2140 | ||
2141 | my $format_options = sub { | |
68c90e21 DM |
2142 | my ($options) = @_; |
2143 | ||
2144 | my $raw = ''; | |
464f933e DM |
2145 | |
2146 | $raw .= "[OPTIONS]\n\n"; | |
2147 | foreach my $opt (keys %$options) { | |
2148 | $raw .= "$opt: $options->{$opt}\n"; | |
2149 | } | |
2150 | $raw .= "\n"; | |
68c90e21 DM |
2151 | |
2152 | return $raw; | |
464f933e DM |
2153 | }; |
2154 | ||
9d6f90e6 DM |
2155 | my $format_ipset = sub { |
2156 | my ($options) = @_; | |
2157 | ||
2158 | my $raw = ''; | |
2159 | ||
6e299ae3 | 2160 | my $nethash = {}; |
9d6f90e6 | 2161 | foreach my $entry (@$options) { |
6e299ae3 DM |
2162 | $nethash->{$entry->{cidr}} = $entry; |
2163 | } | |
2164 | ||
2165 | foreach my $cidr (sort keys %$nethash) { | |
2166 | my $entry = $nethash->{$cidr}; | |
9d6f90e6 DM |
2167 | my $line = $entry->{nomatch} ? '!' : ''; |
2168 | $line .= $entry->{cidr}; | |
2169 | $line .= " # " . encode('utf8', $entry->{comment}) | |
2170 | if $entry->{comment} && $entry->{comment} !~ m/^\s*$/; | |
2171 | $raw .= "$line\n"; | |
2172 | } | |
2173 | ||
2174 | return $raw; | |
2175 | }; | |
2176 | ||
464f933e DM |
2177 | sub save_vmfw_conf { |
2178 | my ($vmid, $vmfw_conf) = @_; | |
2179 | ||
2180 | my $raw = ''; | |
2181 | ||
2182 | my $options = $vmfw_conf->{options}; | |
68c90e21 | 2183 | $raw .= &$format_options($options) if scalar(keys %$options); |
cbb5d6f3 | 2184 | |
464f933e DM |
2185 | my $rules = $vmfw_conf->{rules}; |
2186 | if (scalar(@$rules)) { | |
2187 | $raw .= "[RULES]\n\n"; | |
2188 | $raw .= &$format_rules($rules, 1); | |
2189 | $raw .= "\n"; | |
2190 | } | |
2191 | ||
2192 | my $filename = "/etc/pve/firewall/$vmid.fw"; | |
2193 | PVE::Tools::file_set_contents($filename, $raw); | |
2194 | } | |
2195 | ||
6fc63ffd | 2196 | sub read_vm_firewall_configs { |
5e1267a5 | 2197 | my ($vmdata) = @_; |
6fc63ffd | 2198 | my $vmfw_configs = {}; |
c8301d63 | 2199 | |
5e1267a5 | 2200 | foreach my $vmid (keys %{$vmdata->{qemu}}, keys %{$vmdata->{openvz}}) { |
e7b35711 DM |
2201 | my $vmfw_conf = load_vmfw_conf($vmid); |
2202 | next if !$vmfw_conf->{options}; # skip if file does not exists | |
2203 | $vmfw_configs->{$vmid} = $vmfw_conf; | |
5e1267a5 DM |
2204 | } |
2205 | ||
6fc63ffd | 2206 | return $vmfw_configs; |
5e1267a5 DM |
2207 | } |
2208 | ||
2d404ffc DM |
2209 | sub get_option_log_level { |
2210 | my ($options, $k) = @_; | |
2211 | ||
2212 | my $v = $options->{$k}; | |
178a63be | 2213 | $v = $default_log_level if !defined($v); |
2d404ffc DM |
2214 | |
2215 | return undef if $v eq '' || $v eq 'nolog'; | |
2216 | ||
2217 | $v = $log_level_hash->{$v} if defined($log_level_hash->{$v}); | |
2218 | ||
2219 | return $v if ($v >= 0) && ($v <= 7); | |
2220 | ||
2221 | warn "unknown log level ($k = '$v')\n"; | |
2222 | ||
2223 | return undef; | |
2224 | } | |
2225 | ||
d8f2505e | 2226 | sub generate_std_chains { |
2d404ffc | 2227 | my ($ruleset, $options) = @_; |
cbb5d6f3 | 2228 | |
2d404ffc DM |
2229 | my $loglevel = get_option_log_level($options, 'smurf_log_level'); |
2230 | ||
2231 | # same as shorewall smurflog. | |
782c4cde DM |
2232 | my $chain = 'PVEFW-smurflog'; |
2233 | ||
2234 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2235 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
2d404ffc DM |
2236 | |
2237 | # same as shorewall logflags action. | |
2238 | $loglevel = get_option_log_level($options, 'tcp_flags_log_level'); | |
782c4cde DM |
2239 | $chain = 'PVEFW-logflags'; |
2240 | # fixme: is this correctly logged by pvewf-logger? (ther is no --log-ip-options for NFLOG) | |
2241 | push @{$pve_std_chains->{$chain}}, get_log_rule_base($chain, 0, "DROP: ", $loglevel) if $loglevel; | |
2242 | push @{$pve_std_chains->{$chain}}, "-j DROP"; | |
d8f2505e DM |
2243 | |
2244 | foreach my $chain (keys %$pve_std_chains) { | |
2245 | ruleset_create_chain($ruleset, $chain); | |
2246 | foreach my $rule (@{$pve_std_chains->{$chain}}) { | |
2247 | if (ref($rule)) { | |
2248 | ruleset_generate_rule($ruleset, $chain, $rule); | |
2249 | } else { | |
2250 | ruleset_addrule($ruleset, $chain, $rule); | |
2251 | } | |
2252 | } | |
2253 | } | |
2254 | } | |
2255 | ||
34cdedfa | 2256 | sub generate_ipset_chains { |
dd7a13fd | 2257 | my ($ipset_ruleset, $fw_conf) = @_; |
34cdedfa | 2258 | |
dd7a13fd | 2259 | foreach my $ipset (keys %{$fw_conf->{ipset}}) { |
4b96e877 | 2260 | generate_ipset($ipset_ruleset, "PVEFW-$ipset", $fw_conf->{ipset}->{$ipset}); |
34cdedfa AD |
2261 | } |
2262 | } | |
2263 | ||
2264 | sub generate_ipset { | |
2265 | my ($ipset_ruleset, $name, $options) = @_; | |
2266 | ||
dd7a13fd DM |
2267 | my $hashsize = scalar(@$options); |
2268 | if ($hashsize <= 64) { | |
2a052ee3 | 2269 | $hashsize = 64; |
dd7a13fd | 2270 | } else { |
2a052ee3 AD |
2271 | $hashsize = round_powerof2($hashsize); |
2272 | } | |
2273 | ||
dd7a13fd | 2274 | push @{$ipset_ruleset->{$name}}, "create $name hash:net family inet hashsize $hashsize maxelem $hashsize"; |
34cdedfa | 2275 | |
30f1b100 DM |
2276 | # remove duplicates |
2277 | my $nethash = {}; | |
9d6f90e6 | 2278 | foreach my $entry (@$options) { |
30f1b100 DM |
2279 | $nethash->{$entry->{cidr}} = $entry; |
2280 | } | |
2281 | ||
2282 | foreach my $cidr (sort keys %$nethash) { | |
2283 | my $entry = $nethash->{$cidr}; | |
2284 | ||
9d6f90e6 DM |
2285 | my $cmd = "add $name $cidr"; |
2286 | if ($entry->{nomatch}) { | |
2287 | if ($feature_ipset_nomatch) { | |
2288 | push @{$ipset_ruleset->{$name}}, "$cmd nomatch"; | |
2289 | } else { | |
2290 | warn "ignore !$cidr - nomatch not supported by kernel\n"; | |
2291 | } | |
2292 | } else { | |
2293 | push @{$ipset_ruleset->{$name}}, $cmd; | |
2294 | } | |
34cdedfa | 2295 | } |
2a052ee3 AD |
2296 | } |
2297 | ||
2298 | sub round_powerof2 { | |
dd7a13fd | 2299 | my ($int) = @_; |
2a052ee3 | 2300 | |
dd7a13fd DM |
2301 | $int--; |
2302 | $int |= $int >> $_ foreach (1,2,4,8,16); | |
2303 | return ++$int; | |
34cdedfa AD |
2304 | } |
2305 | ||
6b9f68a2 DM |
2306 | sub save_pvefw_status { |
2307 | my ($status) = @_; | |
2308 | ||
2309 | die "unknown status '$status' - internal error" | |
2310 | if $status !~ m/^(stopped|active)$/; | |
2311 | ||
2312 | mkdir dirname($pve_fw_status_filename); | |
2313 | PVE::Tools::file_set_contents($pve_fw_status_filename, $status); | |
2314 | } | |
2315 | ||
2316 | sub read_pvefw_status { | |
2317 | ||
2318 | my $status = 'unknown'; | |
2319 | ||
2320 | return 'stopped' if ! -f $pve_fw_status_filename; | |
2321 | ||
2322 | eval { | |
2323 | $status = PVE::Tools::file_get_contents($pve_fw_status_filename); | |
2324 | }; | |
2325 | warn $@ if $@; | |
2326 | ||
2327 | return $status; | |
2328 | } | |
2329 | ||
530c005e DM |
2330 | # fixme: move to pve-common PVE::ProcFSTools |
2331 | sub read_proc_net_route { | |
2332 | my $filename = "/proc/net/route"; | |
2333 | ||
2334 | my $res = {}; | |
2335 | ||
2336 | my $fh = IO::File->new ($filename, "r"); | |
2337 | return $res if !$fh; | |
2338 | ||
2339 | my $int_to_quad = sub { | |
2340 | return join '.' => map { ($_[0] >> 8*(3-$_)) % 256 } (3, 2, 1, 0); | |
2341 | }; | |
2342 | ||
2343 | while (defined(my $line = <$fh>)) { | |
2344 | next if $line =~/^Iface\s+Destination/; # skip head | |
2345 | my ($iface, $dest, $gateway, $metric, $mask, $mtu) = (split(/\s+/, $line))[0,1,2,6,7,8]; | |
2346 | push @{$res->{$iface}}, { | |
2347 | dest => &$int_to_quad(hex($dest)), | |
2348 | gateway => &$int_to_quad(hex($gateway)), | |
2349 | mask => &$int_to_quad(hex($mask)), | |
2350 | metric => $metric, | |
2351 | mtu => $mtu, | |
2352 | }; | |
2353 | } | |
2354 | ||
2355 | return $res; | |
2356 | } | |
2357 | ||
fca39c2c | 2358 | sub load_clusterfw_conf { |
530c005e | 2359 | |
fca39c2c DM |
2360 | my $cluster_conf = {}; |
2361 | if (my $fh = IO::File->new($clusterfw_conf_filename, O_RDONLY)) { | |
c6f5cc88 | 2362 | $cluster_conf = parse_cluster_fw_rules($clusterfw_conf_filename, $fh); |
51bae274 | 2363 | } |
5e1267a5 | 2364 | |
fca39c2c | 2365 | return $cluster_conf; |
e5d76bde DM |
2366 | } |
2367 | ||
fca39c2c DM |
2368 | sub save_clusterfw_conf { |
2369 | my ($cluster_conf) = @_; | |
9c7e0858 DM |
2370 | |
2371 | my $raw = ''; | |
9c7e0858 | 2372 | |
c6f5cc88 | 2373 | my $options = $cluster_conf->{options}; |
68c90e21 | 2374 | $raw .= &$format_options($options) if scalar(keys %$options); |
9c7e0858 | 2375 | |
9d6f90e6 DM |
2376 | foreach my $ipset (sort keys %{$cluster_conf->{ipset}}) { |
2377 | $raw .= "[IPSET $ipset]\n\n"; | |
2378 | my $options = $cluster_conf->{ipset}->{$ipset}; | |
2379 | $raw .= &$format_ipset($options); | |
2380 | $raw .= "\n"; | |
2381 | } | |
c6f5cc88 DM |
2382 | |
2383 | my $rules = $cluster_conf->{rules}; | |
2384 | if (scalar(@$rules)) { | |
2385 | $raw .= "[RULES]\n\n"; | |
63c91681 | 2386 | $raw .= &$format_rules($rules, 1); |
c6f5cc88 DM |
2387 | $raw .= "\n"; |
2388 | } | |
2389 | ||
2390 | foreach my $group (sort keys %{$cluster_conf->{groups}}) { | |
2391 | my $rules = $cluster_conf->{groups}->{$group}; | |
2392 | $raw .= "[group $group]\n\n"; | |
63c91681 | 2393 | $raw .= &$format_rules($rules, 0); |
9c7e0858 DM |
2394 | $raw .= "\n"; |
2395 | } | |
2396 | ||
fca39c2c | 2397 | PVE::Tools::file_set_contents($clusterfw_conf_filename, $raw); |
9c7e0858 DM |
2398 | } |
2399 | ||
8b27beb9 DM |
2400 | sub load_hostfw_conf { |
2401 | ||
2402 | my $hostfw_conf = {}; | |
63c91681 DM |
2403 | if (my $fh = IO::File->new($hostfw_conf_filename, O_RDONLY)) { |
2404 | $hostfw_conf = parse_host_fw_rules($hostfw_conf_filename, $fh); | |
8b27beb9 DM |
2405 | } |
2406 | return $hostfw_conf; | |
2407 | } | |
2408 | ||
63c91681 DM |
2409 | sub save_hostfw_conf { |
2410 | my ($hostfw_conf) = @_; | |
2411 | ||
2412 | my $raw = ''; | |
2413 | ||
2414 | my $options = $hostfw_conf->{options}; | |
68c90e21 | 2415 | $raw .= &$format_options($options) if scalar(keys %$options); |
cbb5d6f3 | 2416 | |
63c91681 DM |
2417 | my $rules = $hostfw_conf->{rules}; |
2418 | if (scalar(@$rules)) { | |
2419 | $raw .= "[RULES]\n\n"; | |
2420 | $raw .= &$format_rules($rules, 1); | |
2421 | $raw .= "\n"; | |
2422 | } | |
2423 | ||
2424 | PVE::Tools::file_set_contents($hostfw_conf_filename, $raw); | |
2425 | } | |
2426 | ||
e5d76bde DM |
2427 | sub compile { |
2428 | my $vmdata = read_local_vm_config(); | |
2429 | my $vmfw_configs = read_vm_firewall_configs($vmdata); | |
2430 | ||
2431 | my $routing_table = read_proc_net_route(); | |
2432 | ||
fca39c2c | 2433 | my $cluster_conf = load_clusterfw_conf(); |
e5d76bde | 2434 | |
34cdedfa | 2435 | my $ipset_ruleset = {}; |
fca39c2c | 2436 | generate_ipset_chains($ipset_ruleset, $cluster_conf); |
34cdedfa | 2437 | |
3fa83edf DM |
2438 | my $ruleset = {}; |
2439 | ||
dec84fcd DM |
2440 | ruleset_create_chain($ruleset, "PVEFW-INPUT"); |
2441 | ruleset_create_chain($ruleset, "PVEFW-OUTPUT"); | |
5b1df9a0 | 2442 | |
fadb13dd | 2443 | ruleset_create_chain($ruleset, "PVEFW-FORWARD"); |
3fa83edf | 2444 | |
8b27beb9 DM |
2445 | my $hostfw_conf = load_hostfw_conf(); |
2446 | my $hostfw_options = $hostfw_conf->{options} || {}; | |
fadb13dd | 2447 | |
92e976b3 | 2448 | generate_std_chains($ruleset, $hostfw_options); |
fadb13dd | 2449 | |
6d2ab017 | 2450 | my $hostfw_enable = !(defined($hostfw_options->{enable}) && ($hostfw_options->{enable} == 0)); |
2d404ffc | 2451 | |
fca39c2c | 2452 | enable_host_firewall($ruleset, $hostfw_conf, $cluster_conf) if $hostfw_enable; |
3fa83edf | 2453 | |
6158271d | 2454 | # generate firewall rules for QEMU VMs |
3fa83edf DM |
2455 | foreach my $vmid (keys %{$vmdata->{qemu}}) { |
2456 | my $conf = $vmdata->{qemu}->{$vmid}; | |
6fc63ffd | 2457 | my $vmfw_conf = $vmfw_configs->{$vmid}; |
fa9c4a6f DM |
2458 | next if !$vmfw_conf; |
2459 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
3fa83edf DM |
2460 | |
2461 | foreach my $netid (keys %$conf) { | |
2462 | next if $netid !~ m/^net(\d+)$/; | |
2463 | my $net = PVE::QemuServer::parse_net($conf->{$netid}); | |
2464 | next if !$net; | |
2465 | my $iface = "tap${vmid}i$1"; | |
5e1267a5 | 2466 | |
3fa83edf DM |
2467 | my $bridge = $net->{bridge}; |
2468 | next if !$bridge; # fixme: ? | |
2469 | ||
2470 | $bridge .= "v$net->{tag}" if $net->{tag}; | |
2471 | ||
530c005e | 2472 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
3fa83edf | 2473 | |
c29f55c9 | 2474 | my $macaddr = $net->{macaddr}; |
cbb5d6f3 | 2475 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2476 | $vmfw_conf, $vmid, $bridge, 'IN'); |
cbb5d6f3 | 2477 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2478 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
3fa83edf DM |
2479 | } |
2480 | } | |
c8301d63 DM |
2481 | |
2482 | # generate firewall rules for OpenVZ containers | |
2483 | foreach my $vmid (keys %{$vmdata->{openvz}}) { | |
2484 | my $conf = $vmdata->{openvz}->{$vmid}; | |
2485 | ||
2486 | my $vmfw_conf = $vmfw_configs->{$vmid}; | |
2487 | next if !$vmfw_conf; | |
2488 | next if defined($vmfw_conf->{options}->{enable}) && ($vmfw_conf->{options}->{enable} == 0); | |
2489 | ||
2490 | if ($conf->{ip_address} && $conf->{ip_address}->{value}) { | |
2491 | my $ip = $conf->{ip_address}->{value}; | |
fca39c2c DM |
2492 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'IN'); |
2493 | generate_venet_rules_direction($ruleset, $cluster_conf, $vmfw_conf, $vmid, $ip, 'OUT'); | |
c8301d63 DM |
2494 | } |
2495 | ||
2496 | if ($conf->{netif} && $conf->{netif}->{value}) { | |
2497 | my $netif = PVE::OpenVZ::parse_netif($conf->{netif}->{value}); | |
c8301d63 DM |
2498 | foreach my $netid (keys %$netif) { |
2499 | my $d = $netif->{$netid}; | |
2500 | my $bridge = $d->{bridge}; | |
2501 | if (!$bridge) { | |
2502 | warn "no bridge device for CT $vmid iface '$netid'\n"; | |
2503 | next; # fixme? | |
2504 | } | |
cbb5d6f3 | 2505 | |
530c005e DM |
2506 | generate_bridge_chains($ruleset, $hostfw_conf, $bridge, $routing_table); |
2507 | ||
12d0f130 | 2508 | my $macaddr = $d->{mac}; |
c8301d63 | 2509 | my $iface = $d->{host_ifname}; |
cbb5d6f3 | 2510 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2511 | $vmfw_conf, $vmid, $bridge, 'IN'); |
cbb5d6f3 | 2512 | generate_tap_rules_direction($ruleset, $cluster_conf, $iface, $netid, $macaddr, |
782c4cde | 2513 | $vmfw_conf, $vmid, $bridge, 'OUT'); |
c8301d63 DM |
2514 | } |
2515 | } | |
2516 | } | |
c0413e35 | 2517 | |
cc10e5d7 | 2518 | if($hostfw_options->{optimize}){ |
da6fc60b | 2519 | |
e9d9a73e | 2520 | my $accept = ruleset_chain_exist($ruleset, "PVEFW-IPS") ? "PVEFW-IPS" : "ACCEPT"; |
da6fc60b | 2521 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate RELATED,ESTABLISHED -j $accept"); |
cc10e5d7 AD |
2522 | ruleset_insertrule($ruleset, "PVEFW-FORWARD", "-m conntrack --ctstate INVALID -j DROP"); |
2523 | } | |
2524 | ||
eba0fb64 DM |
2525 | # fixme: what log level should we use here? |
2526 | my $loglevel = get_option_log_level($hostfw_options, "log_level_out"); | |
2527 | ||
c98c037d DM |
2528 | # fixme: should we really block inter-bridge traffic? |
2529 | ||
2530 | # always allow traffic from containers? | |
2531 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i venet0 -j RETURN"); | |
2532 | ||
eba0fb64 | 2533 | # disable interbridge routing |
cbb5d6f3 | 2534 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j PVEFW-Drop"); |
eba0fb64 | 2535 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j PVEFW-Drop"); |
cbb5d6f3 DM |
2536 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-o vmbr+"); |
2537 | ruleset_addlog($ruleset, "PVEFW-FORWARD", 0, "DROP: ", $loglevel, "-i vmbr+"); | |
2538 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-o vmbr+ -j DROP"); | |
eba0fb64 DM |
2539 | ruleset_addrule($ruleset, "PVEFW-FORWARD", "-i vmbr+ -j DROP"); |
2540 | ||
34cdedfa | 2541 | return wantarray ? ($ruleset, $hostfw_conf, $ipset_ruleset) : $ruleset; |
3fa83edf DM |
2542 | } |
2543 | ||
2544 | sub get_ruleset_status { | |
4bd0a9c4 | 2545 | my ($ruleset, $active_chains, $digest_fn, $verbose) = @_; |
3fa83edf DM |
2546 | |
2547 | my $statushash = {}; | |
2548 | ||
2549 | foreach my $chain (sort keys %$ruleset) { | |
4bd0a9c4 | 2550 | my $sig = &$digest_fn($ruleset->{$chain}); |
9bf7d929 | 2551 | |
3fa83edf DM |
2552 | $statushash->{$chain}->{sig} = $sig; |
2553 | ||
2554 | my $oldsig = $active_chains->{$chain}; | |
2555 | if (!defined($oldsig)) { | |
2556 | $statushash->{$chain}->{action} = 'create'; | |
2557 | } else { | |
2558 | if ($oldsig eq $sig) { | |
2559 | $statushash->{$chain}->{action} = 'exists'; | |
2560 | } else { | |
2561 | $statushash->{$chain}->{action} = 'update'; | |
2562 | } | |
2563 | } | |
2564 | print "$statushash->{$chain}->{action} $chain ($sig)\n" if $verbose; | |
2565 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2566 | print "\t$cmd\n" if $verbose; | |
2567 | } | |
2568 | } | |
2569 | ||
2570 | foreach my $chain (sort keys %$active_chains) { | |
2571 | if (!defined($ruleset->{$chain})) { | |
2572 | my $sig = $active_chains->{$chain}; | |
2573 | $statushash->{$chain}->{action} = 'delete'; | |
2574 | $statushash->{$chain}->{sig} = $sig; | |
2575 | print "delete $chain ($sig)\n" if $verbose; | |
2576 | } | |
6158271d | 2577 | } |
2a052ee3 | 2578 | |
3fa83edf DM |
2579 | return $statushash; |
2580 | } | |
2581 | ||
3fa83edf DM |
2582 | sub print_sig_rule { |
2583 | my ($chain, $sig) = @_; | |
2584 | ||
09d5f68e DM |
2585 | # We just use this to store a SHA1 checksum used to detect changes |
2586 | return "-A $chain -m comment --comment \"PVESIG:$sig\"\n"; | |
b6360c3f DM |
2587 | } |
2588 | ||
df7cb349 | 2589 | sub get_ruleset_cmdlist { |
a84f4d96 | 2590 | my ($ruleset, $verbose) = @_; |
3fa83edf | 2591 | |
3fa83edf | 2592 | my $cmdlist = "*filter\n"; # we pass this to iptables-restore; |
cbb5d6f3 | 2593 | |
4bd0a9c4 DM |
2594 | my ($active_chains, $hooks) = iptables_get_chains(); |
2595 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, $verbose); | |
3fa83edf DM |
2596 | |
2597 | # create missing chains first | |
2598 | foreach my $chain (sort keys %$ruleset) { | |
2599 | my $stat = $statushash->{$chain}; | |
2600 | die "internal error" if !$stat; | |
2601 | next if $stat->{action} ne 'create'; | |
886aba9c | 2602 | |
3fa83edf DM |
2603 | $cmdlist .= ":$chain - [0:0]\n"; |
2604 | } | |
2605 | ||
4bd0a9c4 DM |
2606 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { |
2607 | if (!$hooks->{$h}) { | |
2608 | $cmdlist .= "-A $h -j PVEFW-$h\n"; | |
2609 | } | |
3fa83edf DM |
2610 | } |
2611 | ||
2612 | foreach my $chain (sort keys %$ruleset) { | |
2613 | my $stat = $statushash->{$chain}; | |
2614 | die "internal error" if !$stat; | |
2615 | ||
2616 | if ($stat->{action} eq 'update' || $stat->{action} eq 'create') { | |
2617 | $cmdlist .= "-F $chain\n"; | |
2618 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
2619 | $cmdlist .= "$cmd\n"; | |
2620 | } | |
2621 | $cmdlist .= print_sig_rule($chain, $stat->{sig}); | |
2622 | } elsif ($stat->{action} eq 'delete') { | |
f5d28682 | 2623 | die "internal error"; # this should not happen |
3fa83edf DM |
2624 | } elsif ($stat->{action} eq 'exists') { |
2625 | # do nothing | |
2626 | } else { | |
2627 | die "internal error - unknown status '$stat->{action}'"; | |
2628 | } | |
2629 | } | |
2630 | ||
f5d28682 DM |
2631 | foreach my $chain (keys %$statushash) { |
2632 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2633 | $cmdlist .= "-F $chain\n"; | |
2634 | } | |
2635 | foreach my $chain (keys %$statushash) { | |
2636 | next if $statushash->{$chain}->{action} ne 'delete'; | |
fadb13dd DM |
2637 | next if $chain eq 'PVEFW-INPUT'; |
2638 | next if $chain eq 'PVEFW-OUTPUT'; | |
2639 | next if $chain eq 'PVEFW-FORWARD'; | |
f5d28682 DM |
2640 | $cmdlist .= "-X $chain\n"; |
2641 | } | |
2642 | ||
3f95d14a | 2643 | my $changes = $cmdlist ne "*filter\n" ? 1 : 0; |
4bd0a9c4 | 2644 | |
3fa83edf DM |
2645 | $cmdlist .= "COMMIT\n"; |
2646 | ||
3f95d14a | 2647 | return wantarray ? ($cmdlist, $changes) : $cmdlist; |
6b9f68a2 DM |
2648 | } |
2649 | ||
34cdedfa | 2650 | sub get_ipset_cmdlist { |
dd7a13fd | 2651 | my ($ruleset, $verbose) = @_; |
34cdedfa AD |
2652 | |
2653 | my $cmdlist = ""; | |
2654 | ||
dd7a13fd DM |
2655 | my $delete_cmdlist = ""; |
2656 | ||
4bd0a9c4 DM |
2657 | my $active_chains = ipset_get_chains(); |
2658 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&ipset_chain_digest, $verbose); | |
34cdedfa | 2659 | |
30f1b100 DM |
2660 | # remove stale _swap chains |
2661 | foreach my $chain (keys %$active_chains) { | |
2662 | if ($chain =~ m/^PVEFW-\S+_swap$/) { | |
2663 | $cmdlist .= "destroy $chain\n"; | |
2664 | } | |
2665 | } | |
2666 | ||
dd7a13fd DM |
2667 | foreach my $chain (sort keys %$ruleset) { |
2668 | my $stat = $statushash->{$chain}; | |
2669 | die "internal error" if !$stat; | |
2a052ee3 | 2670 | |
dd7a13fd DM |
2671 | if ($stat->{action} eq 'create') { |
2672 | foreach my $cmd (@{$ruleset->{$chain}}) { | |
34cdedfa AD |
2673 | $cmdlist .= "$cmd\n"; |
2674 | } | |
dd7a13fd | 2675 | } |
34cdedfa | 2676 | |
dd7a13fd DM |
2677 | if ($stat->{action} eq 'update') { |
2678 | my $chain_swap = $chain."_swap"; | |
cbb5d6f3 | 2679 | |
dd7a13fd DM |
2680 | foreach my $cmd (@{$ruleset->{$chain}}) { |
2681 | $cmd =~ s/$chain/$chain_swap/; | |
2682 | $cmdlist .= "$cmd\n"; | |
34cdedfa | 2683 | } |
dd7a13fd DM |
2684 | $cmdlist .= "swap $chain_swap $chain\n"; |
2685 | $cmdlist .= "flush $chain_swap\n"; | |
2686 | $cmdlist .= "destroy $chain_swap\n"; | |
2a052ee3 | 2687 | } |
34cdedfa | 2688 | |
dd7a13fd | 2689 | } |
3f95d14a | 2690 | |
dd7a13fd DM |
2691 | foreach my $chain (keys %$statushash) { |
2692 | next if $statushash->{$chain}->{action} ne 'delete'; | |
2a052ee3 | 2693 | |
dd7a13fd DM |
2694 | $delete_cmdlist .= "flush $chain\n"; |
2695 | $delete_cmdlist .= "destroy $chain\n"; | |
34cdedfa AD |
2696 | } |
2697 | ||
dd7a13fd | 2698 | my $changes = ($cmdlist || $delete_cmdlist) ? 1 : 0; |
cbb5d6f3 | 2699 | |
dd7a13fd | 2700 | return ($cmdlist, $delete_cmdlist, $changes); |
34cdedfa AD |
2701 | } |
2702 | ||
6b9f68a2 | 2703 | sub apply_ruleset { |
34cdedfa | 2704 | my ($ruleset, $hostfw_conf, $ipset_ruleset, $verbose) = @_; |
6b9f68a2 DM |
2705 | |
2706 | enable_bridge_firewall(); | |
2707 | ||
edb75ba9 DM |
2708 | update_nf_conntrack_max($hostfw_conf); |
2709 | ||
cbb5d6f3 | 2710 | my ($ipset_create_cmdlist, $ipset_delete_cmdlist, $ipset_changes) = |
81a0bf43 | 2711 | get_ipset_cmdlist($ipset_ruleset, undef, $verbose); |
6b9f68a2 | 2712 | |
81a0bf43 | 2713 | my ($cmdlist, $changes) = get_ruleset_cmdlist($ruleset, $verbose); |
2a052ee3 | 2714 | |
81a0bf43 DM |
2715 | if ($verbose) { |
2716 | if ($ipset_changes) { | |
2717 | print "ipset changes:\n"; | |
2718 | print $ipset_create_cmdlist if $ipset_create_cmdlist; | |
2719 | print $ipset_delete_cmdlist if $ipset_delete_cmdlist; | |
2720 | } | |
3f95d14a | 2721 | |
81a0bf43 DM |
2722 | if ($changes) { |
2723 | print "iptables changes:\n"; | |
2724 | print $cmdlist; | |
2725 | } | |
2726 | } | |
3fa83edf | 2727 | |
2a052ee3 | 2728 | ipset_restore_cmdlist($ipset_create_cmdlist); |
34cdedfa | 2729 | |
3fa83edf DM |
2730 | iptables_restore_cmdlist($cmdlist); |
2731 | ||
dd7a13fd | 2732 | ipset_restore_cmdlist($ipset_delete_cmdlist) if $ipset_delete_cmdlist; |
2a052ee3 | 2733 | |
6158271d | 2734 | # test: re-read status and check if everything is up to date |
4bd0a9c4 | 2735 | my $active_chains = iptables_get_chains(); |
81a0bf43 | 2736 | my $statushash = get_ruleset_status($ruleset, $active_chains, \&iptables_chain_digest, 0); |
3fa83edf DM |
2737 | |
2738 | my $errors; | |
2739 | foreach my $chain (sort keys %$ruleset) { | |
2740 | my $stat = $statushash->{$chain}; | |
2741 | if ($stat->{action} ne 'exists') { | |
2742 | warn "unable to update chain '$chain'\n"; | |
2743 | $errors = 1; | |
2744 | } | |
2745 | } | |
b6360c3f | 2746 | |
3fa83edf | 2747 | die "unable to apply firewall changes\n" if $errors; |
b6360c3f DM |
2748 | } |
2749 | ||
490cdead DM |
2750 | sub update_nf_conntrack_max { |
2751 | my ($hostfw_conf) = @_; | |
2752 | ||
2753 | my $max = 65536; # reasonable default | |
2754 | ||
2755 | my $options = $hostfw_conf->{options} || {}; | |
2756 | ||
2757 | if (defined($options->{nf_conntrack_max}) && ($options->{nf_conntrack_max} > $max)) { | |
2758 | $max = $options->{nf_conntrack_max}; | |
2759 | $max = int(($max+ 8191)/8192)*8192; # round to multiples of 8192 | |
2760 | } | |
2761 | ||
2762 | my $filename_nf_conntrack_max = "/proc/sys/net/nf_conntrack_max"; | |
2763 | my $filename_hashsize = "/sys/module/nf_conntrack/parameters/hashsize"; | |
2764 | ||
2765 | my $current = int(PVE::Tools::file_read_firstline($filename_nf_conntrack_max) || $max); | |
2766 | ||
2767 | if ($current != $max) { | |
2768 | my $hashsize = int($max/4); | |
2769 | PVE::ProcFSTools::write_proc_entry($filename_hashsize, $hashsize); | |
2770 | PVE::ProcFSTools::write_proc_entry($filename_nf_conntrack_max, $max); | |
2771 | } | |
2772 | } | |
2773 | ||
c4a2e5ae DM |
2774 | sub remove_pvefw_chains { |
2775 | ||
2776 | my ($chash, $hooks) = iptables_get_chains(); | |
2777 | my $cmdlist = "*filter\n"; | |
2778 | ||
2779 | foreach my $h (qw(INPUT OUTPUT FORWARD)) { | |
2780 | if ($hooks->{$h}) { | |
2781 | $cmdlist .= "-D $h -j PVEFW-$h\n"; | |
2782 | } | |
2783 | } | |
cbb5d6f3 | 2784 | |
c4a2e5ae DM |
2785 | foreach my $chain (keys %$chash) { |
2786 | $cmdlist .= "-F $chain\n"; | |
2787 | } | |
2788 | ||
2789 | foreach my $chain (keys %$chash) { | |
2790 | $cmdlist .= "-X $chain\n"; | |
2791 | } | |
2792 | $cmdlist .= "COMMIT\n"; | |
2793 | ||
2794 | iptables_restore_cmdlist($cmdlist); | |
2795 | } | |
2796 | ||
6b9f68a2 DM |
2797 | sub update { |
2798 | my ($start, $verbose) = @_; | |
2799 | ||
2800 | my $code = sub { | |
2801 | my $status = read_pvefw_status(); | |
2802 | ||
3f95d14a | 2803 | my ($ruleset, $hostfw_conf, $ipset_ruleset) = compile(); |
490cdead | 2804 | |
6b9f68a2 DM |
2805 | if ($start || $status eq 'active') { |
2806 | ||
2807 | save_pvefw_status('active') if ($status ne 'active'); | |
2808 | ||
34cdedfa | 2809 | apply_ruleset($ruleset, $hostfw_conf, $ipset_ruleset, $verbose); |
6b9f68a2 DM |
2810 | } else { |
2811 | print "Firewall not active (status = $status)\n" if $verbose; | |
2812 | } | |
2813 | }; | |
2814 | ||
2815 | run_locked($code); | |
2816 | } | |
2817 | ||
2818 | ||
b6360c3f | 2819 | 1; |