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Commit | Line | Data |
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0c32b7fb DM |
1 | package PVE::Service::pve_firewall; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
0c32b7fb | 5 | |
4a626429 TL |
6 | use Data::Dumper; |
7 | use Time::HiRes qw (gettimeofday usleep); | |
8 | ||
9 | use PVE::CLIHandler; | |
0c32b7fb | 10 | use PVE::Cluster qw(cfs_read_file); |
c89fafa2 | 11 | use PVE::Corosync; |
4a626429 TL |
12 | use PVE::Daemon; |
13 | use PVE::INotify; | |
14 | use PVE::ProcFSTools; | |
0c32b7fb | 15 | use PVE::RPCEnvironment; |
4a626429 TL |
16 | use PVE::SafeSyslog; |
17 | use PVE::Tools qw(dir_glob_foreach file_read_firstline); | |
18 | ||
0c32b7fb DM |
19 | use PVE::Firewall; |
20 | use PVE::FirewallSimulator; | |
0c32b7fb DM |
21 | |
22 | use base qw(PVE::Daemon); | |
23 | ||
24 | my $cmdline = [$0, @ARGV]; | |
25 | ||
26 | my %daemon_options = (restart_on_error => 5, stop_wait_time => 5); | |
27 | ||
28 | my $daemon = __PACKAGE__->new('pve-firewall', $cmdline, %daemon_options); | |
29 | ||
30 | my $nodename = PVE::INotify::nodename(); | |
31 | ||
32 | sub init { | |
0c32b7fb | 33 | PVE::Cluster::cfs_update(); |
2e2b71e1 | 34 | |
0c32b7fb DM |
35 | PVE::Firewall::init(); |
36 | } | |
37 | ||
38 | my $restart_request = 0; | |
39 | my $next_update = 0; | |
40 | ||
2e2b71e1 | 41 | my $cycle = 0; |
0c32b7fb DM |
42 | my $updatetime = 10; |
43 | ||
44 | my $initial_memory_usage; | |
45 | ||
46 | sub shutdown { | |
47 | my ($self) = @_; | |
48 | ||
49 | syslog('info' , "server closing"); | |
50 | ||
51 | # wait for children | |
52 | 1 while (waitpid(-1, POSIX::WNOHANG()) > 0); | |
2e2b71e1 | 53 | |
0c32b7fb DM |
54 | syslog('info' , "clear firewall rules"); |
55 | ||
56 | eval { PVE::Firewall::remove_pvefw_chains(); }; | |
57 | warn $@ if $@; | |
58 | ||
59 | $self->exit_daemon(0); | |
60 | } | |
61 | ||
62 | sub hup { | |
63 | my ($self) = @_; | |
64 | ||
65 | $restart_request = 1; | |
66 | } | |
67 | ||
68 | sub run { | |
69 | my ($self) = @_; | |
70 | ||
71 | local $SIG{'__WARN__'} = 'IGNORE'; # do not fill up logs | |
72 | ||
73 | for (;;) { # forever | |
0c32b7fb DM |
74 | $next_update = time() + $updatetime; |
75 | ||
76 | my ($ccsec, $cusec) = gettimeofday (); | |
77 | eval { | |
78 | PVE::Cluster::cfs_update(); | |
79 | PVE::Firewall::update(); | |
80 | }; | |
81 | my $err = $@; | |
2e2b71e1 | 82 | |
0c32b7fb DM |
83 | if ($err) { |
84 | syslog('err', "status update error: $err"); | |
85 | } | |
86 | ||
87 | my ($ccsec_end, $cusec_end) = gettimeofday (); | |
88 | my $cptime = ($ccsec_end-$ccsec) + ($cusec_end - $cusec)/1000000; | |
89 | ||
90 | syslog('info', sprintf("firewall update time (%.3f seconds)", $cptime)) | |
91 | if ($cptime > 5); | |
92 | ||
93 | $cycle++; | |
94 | ||
95 | my $mem = PVE::ProcFSTools::read_memory_usage(); | |
2e2b71e1 | 96 | |
0c32b7fb DM |
97 | if (!defined($initial_memory_usage) || ($cycle < 10)) { |
98 | $initial_memory_usage = $mem->{resident}; | |
99 | } else { | |
100 | my $diff = $mem->{resident} - $initial_memory_usage; | |
101 | if ($diff > 5*1024*1024) { | |
102 | syslog ('info', "restarting server after $cycle cycles to " . | |
103 | "reduce memory usage (free $mem->{resident} ($diff) bytes)"); | |
104 | $self->restart_daemon(); | |
105 | } | |
106 | } | |
107 | ||
108 | my $wcount = 0; | |
2e2b71e1 | 109 | while ((time() < $next_update) && |
0c32b7fb DM |
110 | ($wcount < $updatetime) && # protect against time wrap |
111 | !$restart_request) { $wcount++; sleep (1); }; | |
2e2b71e1 | 112 | |
0c32b7fb DM |
113 | $self->restart_daemon() if $restart_request; |
114 | } | |
115 | } | |
116 | ||
117 | $daemon->register_start_command("Start the Proxmox VE firewall service."); | |
118 | $daemon->register_restart_command(1, "Restart the Proxmox VE firewall service."); | |
4a626429 TL |
119 | $daemon->register_stop_command( |
120 | "Stop the Proxmox VE firewall service. Note, stopping actively removes all Proxmox VE related" | |
121 | ." iptable rules rendering the host potentially unprotected." | |
122 | ); | |
0c32b7fb DM |
123 | |
124 | __PACKAGE__->register_method ({ | |
125 | name => 'status', | |
126 | path => 'status', | |
127 | method => 'GET', | |
128 | description => "Get firewall status.", | |
129 | parameters => { | |
2e2b71e1 | 130 | additionalProperties => 0, |
0c32b7fb DM |
131 | properties => {}, |
132 | }, | |
2e2b71e1 | 133 | returns => { |
0c32b7fb DM |
134 | type => 'object', |
135 | additionalProperties => 0, | |
136 | properties => { | |
137 | status => { | |
138 | type => 'string', | |
139 | enum => ['unknown', 'stopped', 'running'], | |
140 | }, | |
141 | enable => { | |
142 | description => "Firewall is enabled (in 'cluster.fw')", | |
143 | type => 'boolean', | |
144 | }, | |
145 | changes => { | |
146 | description => "Set when there are pending changes.", | |
147 | type => 'boolean', | |
148 | optional => 1, | |
149 | } | |
150 | }, | |
151 | }, | |
152 | code => sub { | |
153 | my ($param) = @_; | |
154 | ||
155 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
156 | ||
157 | my $code = sub { | |
158 | ||
159 | my $status = $daemon->running() ? 'running' : 'stopped'; | |
160 | ||
161 | my $res = { status => $status }; | |
162 | ||
40af93c4 TL |
163 | PVE::Firewall::set_verbose(1); # show syntax errors |
164 | ||
165 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(undef); | |
0c32b7fb DM |
166 | $res->{enable} = $cluster_conf->{options}->{enable} ? 1 : 0; |
167 | ||
168 | if ($status eq 'running') { | |
2e2b71e1 | 169 | |
40af93c4 | 170 | my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = PVE::Firewall::compile($cluster_conf, undef, undef); |
0c32b7fb | 171 | |
40af93c4 TL |
172 | PVE::Firewall::set_verbose(0); # do not show iptables details |
173 | my (undef, undef, $ipset_changes) = PVE::Firewall::get_ipset_cmdlist($ipset_ruleset); | |
64e0adf4 AD |
174 | my ($test, $ruleset_changes) = PVE::Firewall::get_ruleset_cmdlist($ruleset->{filter}); |
175 | my (undef, $ruleset_changesv6) = PVE::Firewall::get_ruleset_cmdlist($rulesetv6->{filter}, "ip6tables"); | |
176 | my (undef, $ruleset_changes_raw) = PVE::Firewall::get_ruleset_cmdlist($ruleset->{raw}, undef, 'raw'); | |
177 | my (undef, $ruleset_changesv6_raw) = PVE::Firewall::get_ruleset_cmdlist($rulesetv6->{raw}, "ip6tables", 'raw'); | |
40af93c4 | 178 | my (undef, $ebtables_changes) = PVE::Firewall::get_ebtables_cmdlist($ebtables_ruleset); |
0c32b7fb | 179 | |
64e0adf4 | 180 | $res->{changes} = ($ipset_changes || $ruleset_changes || $ruleset_changesv6 || $ebtables_changes || $ruleset_changes_raw || $ruleset_changesv6_raw) ? 1 : 0; |
0c32b7fb DM |
181 | } |
182 | ||
183 | return $res; | |
184 | }; | |
185 | ||
186 | return PVE::Firewall::run_locked($code); | |
187 | }}); | |
188 | ||
189 | __PACKAGE__->register_method ({ | |
190 | name => 'compile', | |
191 | path => 'compile', | |
192 | method => 'GET', | |
193 | description => "Compile and print firewall rules. This is useful for testing.", | |
194 | parameters => { | |
2e2b71e1 | 195 | additionalProperties => 0, |
0c32b7fb DM |
196 | properties => {}, |
197 | }, | |
198 | returns => { type => 'null' }, | |
199 | ||
200 | code => sub { | |
201 | my ($param) = @_; | |
202 | ||
203 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
204 | ||
205 | my $code = sub { | |
206 | ||
40af93c4 | 207 | PVE::Firewall::set_verbose(1); |
0c32b7fb | 208 | |
40af93c4 TL |
209 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(undef); |
210 | my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = PVE::Firewall::compile($cluster_conf, undef, undef); | |
0c32b7fb DM |
211 | |
212 | print "ipset cmdlist:\n"; | |
40af93c4 | 213 | my (undef, undef, $ipset_changes) = PVE::Firewall::get_ipset_cmdlist($ipset_ruleset); |
0c32b7fb DM |
214 | |
215 | print "\niptables cmdlist:\n"; | |
64e0adf4 | 216 | my (undef, $ruleset_changes) = PVE::Firewall::get_ruleset_cmdlist($ruleset->{filter}); |
0c32b7fb DM |
217 | |
218 | print "\nip6tables cmdlist:\n"; | |
64e0adf4 | 219 | my (undef, $ruleset_changesv6) = PVE::Firewall::get_ruleset_cmdlist($rulesetv6->{filter}, "ip6tables"); |
0c32b7fb | 220 | |
151c209e | 221 | print "\nebtables cmdlist:\n"; |
40af93c4 | 222 | my (undef, $ebtables_changes) = PVE::Firewall::get_ebtables_cmdlist($ebtables_ruleset); |
151c209e | 223 | |
64e0adf4 AD |
224 | print "\niptables table raw cmdlist:\n"; |
225 | my (undef, $ruleset_changes_raw) = PVE::Firewall::get_ruleset_cmdlist($ruleset->{raw}, undef, 'raw'); | |
226 | ||
227 | print "\nip6tables table raw cmdlist:\n"; | |
228 | my (undef, $ruleset_changesv6_raw) = PVE::Firewall::get_ruleset_cmdlist($rulesetv6->{raw}, "ip6tables", 'raw'); | |
229 | ||
230 | ||
231 | if ($ipset_changes || $ruleset_changes || $ruleset_changesv6 || $ebtables_changes || $ruleset_changes_raw || $ruleset_changesv6_raw) { | |
0c32b7fb DM |
232 | print "detected changes\n"; |
233 | } else { | |
234 | print "no changes\n"; | |
235 | } | |
236 | if (!$cluster_conf->{options}->{enable}) { | |
237 | print "firewall disabled\n"; | |
238 | } | |
0c32b7fb DM |
239 | }; |
240 | ||
241 | PVE::Firewall::run_locked($code); | |
242 | ||
243 | return undef; | |
244 | }}); | |
245 | ||
246 | __PACKAGE__->register_method ({ | |
247 | name => 'localnet', | |
248 | path => 'localnet', | |
249 | method => 'GET', | |
250 | description => "Print information about local network.", | |
251 | parameters => { | |
2e2b71e1 | 252 | additionalProperties => 0, |
0c32b7fb DM |
253 | properties => {}, |
254 | }, | |
255 | returns => { type => 'null' }, | |
256 | code => sub { | |
257 | my ($param) = @_; | |
258 | ||
259 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
260 | ||
261 | my $nodename = PVE::INotify::nodename(); | |
262 | print "local hostname: $nodename\n"; | |
263 | ||
264 | my $ip = PVE::Cluster::remote_node_ip($nodename); | |
265 | print "local IP address: $ip\n"; | |
266 | ||
267 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(); | |
2e2b71e1 | 268 | |
0c32b7fb DM |
269 | my $localnet = PVE::Firewall::local_network() || '127.0.0.0/8'; |
270 | print "network auto detect: $localnet\n"; | |
271 | if ($cluster_conf->{aliases}->{local_network}) { | |
272 | print "using user defined local_network: $cluster_conf->{aliases}->{local_network}->{cidr}\n"; | |
273 | } else { | |
274 | print "using detected local_network: $localnet\n"; | |
275 | } | |
276 | ||
c89fafa2 SR |
277 | if (PVE::Corosync::check_conf_exists(1)) { |
278 | my $corosync_conf = PVE::Cluster::cfs_read_file("corosync.conf"); | |
279 | my $corosync_node_found = 0; | |
280 | ||
281 | print "\naccepting corosync traffic from/to:\n"; | |
282 | ||
283 | PVE::Corosync::for_all_corosync_addresses($corosync_conf, undef, sub { | |
ae2dc2fa | 284 | my ($curr_node_name, $curr_node_ip, undef, $key) = @_; |
c89fafa2 | 285 | |
b76a59e4 FG |
286 | return if $curr_node_name eq $nodename; |
287 | ||
cb161529 | 288 | $corosync_node_found = 1; |
c89fafa2 SR |
289 | |
290 | $key =~ m/(?:ring|link)(\d+)_addr/; | |
ae2dc2fa | 291 | print " - $curr_node_name: $curr_node_ip (link: $1)\n"; |
c89fafa2 SR |
292 | }); |
293 | ||
294 | if (!$corosync_node_found) { | |
295 | print " - no nodes found\n"; | |
296 | } | |
297 | } | |
298 | ||
0c32b7fb DM |
299 | return undef; |
300 | }}); | |
301 | ||
302 | __PACKAGE__->register_method ({ | |
303 | name => 'simulate', | |
304 | path => 'simulate', | |
305 | method => 'GET', | |
4a626429 TL |
306 | description => "Simulate firewall rules. This does not simulates the kernel 'routing' table," |
307 | ." but simply assumes that routing from source zone to destination zone is possible.", | |
0c32b7fb | 308 | parameters => { |
2e2b71e1 | 309 | additionalProperties => 0, |
0c32b7fb DM |
310 | properties => { |
311 | verbose => { | |
312 | description => "Verbose output.", | |
313 | type => 'boolean', | |
314 | optional => 1, | |
315 | default => 0, | |
316 | }, | |
317 | from => { | |
318 | description => "Source zone.", | |
319 | type => 'string', | |
320 | pattern => '(host|outside|vm\d+|ct\d+|vmbr\d+/\S+)', | |
321 | optional => 1, | |
322 | default => 'outside', | |
323 | }, | |
324 | to => { | |
325 | description => "Destination zone.", | |
326 | type => 'string', | |
327 | pattern => '(host|outside|vm\d+|ct\d+|vmbr\d+/\S+)', | |
328 | optional => 1, | |
329 | default => 'host', | |
330 | }, | |
331 | protocol => { | |
332 | description => "Protocol.", | |
333 | type => 'string', | |
334 | pattern => '(tcp|udp)', | |
335 | optional => 1, | |
336 | default => 'tcp', | |
337 | }, | |
338 | dport => { | |
339 | description => "Destination port.", | |
340 | type => 'integer', | |
341 | minValue => 1, | |
342 | maxValue => 65535, | |
343 | optional => 1, | |
344 | }, | |
345 | sport => { | |
346 | description => "Source port.", | |
347 | type => 'integer', | |
348 | minValue => 1, | |
349 | maxValue => 65535, | |
350 | optional => 1, | |
351 | }, | |
352 | source => { | |
353 | description => "Source IP address.", | |
354 | type => 'string', format => 'ipv4', | |
355 | optional => 1, | |
356 | }, | |
357 | dest => { | |
358 | description => "Destination IP address.", | |
359 | type => 'string', format => 'ipv4', | |
360 | optional => 1, | |
361 | }, | |
362 | }, | |
363 | }, | |
364 | returns => { type => 'null' }, | |
365 | code => sub { | |
366 | my ($param) = @_; | |
367 | ||
368 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
369 | ||
40af93c4 TL |
370 | PVE::Firewall::set_verbose($param->{verbose}); |
371 | ||
372 | my ($ruleset, $ipset_ruleset, $rulesetv6, $ebtables_ruleset) = PVE::Firewall::compile(); | |
0c32b7fb | 373 | |
40af93c4 | 374 | PVE::FirewallSimulator::debug(); |
2e2b71e1 | 375 | |
0c32b7fb DM |
376 | my $host_ip = PVE::Cluster::remote_node_ip($nodename); |
377 | ||
378 | PVE::FirewallSimulator::reset_trace(); | |
64e0adf4 AD |
379 | print Dumper($ruleset->{filter}) if $param->{verbose}; |
380 | print Dumper($ruleset->{raw}) if $param->{verbose}; | |
0c32b7fb DM |
381 | |
382 | my $test = { | |
383 | from => $param->{from}, | |
384 | to => $param->{to}, | |
385 | proto => $param->{protocol} || 'tcp', | |
386 | source => $param->{source}, | |
387 | dest => $param->{dest}, | |
388 | dport => $param->{dport}, | |
389 | sport => $param->{sport}, | |
390 | }; | |
391 | ||
392 | if (!defined($test->{to})) { | |
393 | $test->{to} = 'host'; | |
2e2b71e1 SR |
394 | PVE::FirewallSimulator::add_trace("Set Zone: to => '$test->{to}'\n"); |
395 | } | |
0c32b7fb DM |
396 | if (!defined($test->{from})) { |
397 | $test->{from} = 'outside', | |
2e2b71e1 | 398 | PVE::FirewallSimulator::add_trace("Set Zone: from => '$test->{from}'\n"); |
0c32b7fb DM |
399 | } |
400 | ||
401 | my $vmdata = PVE::Firewall::read_local_vm_config(); | |
402 | ||
403 | print "Test packet:\n"; | |
404 | ||
405 | foreach my $k (qw(from to proto source dest dport sport)) { | |
406 | printf(" %-8s: %s\n", $k, $test->{$k}) if defined($test->{$k}); | |
407 | } | |
408 | ||
409 | $test->{action} = 'QUERY'; | |
410 | ||
4a626429 TL |
411 | my $res = PVE::FirewallSimulator::simulate_firewall( |
412 | $ruleset->{filter}, $ipset_ruleset, $host_ip, $vmdata, $test); | |
2e2b71e1 | 413 | |
0c32b7fb DM |
414 | print "ACTION: $res\n"; |
415 | ||
416 | return undef; | |
417 | }}); | |
418 | ||
419 | our $cmddef = { | |
420 | start => [ __PACKAGE__, 'start', []], | |
421 | restart => [ __PACKAGE__, 'restart', []], | |
422 | stop => [ __PACKAGE__, 'stop', []], | |
423 | compile => [ __PACKAGE__, 'compile', []], | |
424 | simulate => [ __PACKAGE__, 'simulate', []], | |
425 | localnet => [ __PACKAGE__, 'localnet', []], | |
426 | status => [ __PACKAGE__, 'status', [], undef, sub { | |
427 | my $res = shift; | |
428 | my $status = ($res->{enable} ? "enabled" : "disabled") . '/' . $res->{status}; | |
2e2b71e1 | 429 | |
0c32b7fb DM |
430 | if ($res->{changes}) { |
431 | print "Status: $status (pending changes)\n"; | |
432 | } else { | |
433 | print "Status: $status\n"; | |
434 | } | |
435 | }], | |
436 | }; | |
437 | ||
438 | 1; |