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Commit | Line | Data |
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e2beb7aa DM |
1 | #!/usr/bin/perl |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use PVE::SafeSyslog; | |
a3d58ffc DM |
6 | use PVE::Daemon; |
7 | ||
e2beb7aa DM |
8 | use Time::HiRes qw (gettimeofday); |
9 | use PVE::Tools qw(dir_glob_foreach file_read_firstline); | |
a3d58ffc | 10 | use PVE::ProcFSTools; |
e2beb7aa DM |
11 | use PVE::INotify; |
12 | use PVE::Cluster qw(cfs_read_file); | |
13 | use PVE::RPCEnvironment; | |
14 | use PVE::CLIHandler; | |
15 | use PVE::Firewall; | |
814de832 DM |
16 | use PVE::FirewallSimulator; |
17 | use Data::Dumper; | |
e2beb7aa | 18 | |
a3d58ffc | 19 | use base qw(PVE::Daemon); |
e2beb7aa | 20 | |
a3d58ffc | 21 | my $cmdline = [$0, @ARGV]; |
e2beb7aa | 22 | |
a3d58ffc | 23 | my %daemon_options = (restart_on_error => 5, stop_wait_time => 5); |
e2beb7aa | 24 | |
a3d58ffc | 25 | my $daemon = __PACKAGE__->new('pve-firewall', $cmdline, %daemon_options); |
e2beb7aa DM |
26 | |
27 | my $rpcenv = PVE::RPCEnvironment->init('cli'); | |
28 | ||
29 | $rpcenv->init_request(); | |
30 | $rpcenv->set_language($ENV{LANG}); | |
31 | $rpcenv->set_user('root@pam'); | |
32 | ||
814de832 DM |
33 | my $nodename = PVE::INotify::nodename(); |
34 | ||
a3d58ffc | 35 | sub init { |
e2beb7aa | 36 | |
a3d58ffc DM |
37 | PVE::Cluster::cfs_update(); |
38 | ||
39 | PVE::Firewall::init(); | |
e2beb7aa DM |
40 | } |
41 | ||
42 | my $restart_request = 0; | |
43 | my $next_update = 0; | |
44 | ||
45 | my $cycle = 0; | |
46 | my $updatetime = 10; | |
47 | ||
48 | my $initial_memory_usage; | |
49 | ||
a3d58ffc DM |
50 | sub shutdown { |
51 | my ($self) = @_; | |
e2beb7aa | 52 | |
a3d58ffc | 53 | syslog('info' , "server closing"); |
e2beb7aa | 54 | |
a3d58ffc DM |
55 | # wait for children |
56 | 1 while (waitpid(-1, POSIX::WNOHANG()) > 0); | |
e2beb7aa | 57 | |
a3d58ffc | 58 | syslog('info' , "clear firewall rules"); |
e2beb7aa | 59 | |
a3d58ffc DM |
60 | eval { PVE::Firewall::remove_pvefw_chains(); }; |
61 | warn $@ if $@; | |
e2beb7aa | 62 | |
a3d58ffc DM |
63 | $self->exit_daemon(0); |
64 | } | |
e2beb7aa | 65 | |
a3d58ffc DM |
66 | sub hup { |
67 | my ($self) = @_; | |
e2beb7aa | 68 | |
a3d58ffc | 69 | syslog('info' , "received signal HUP"); |
e2beb7aa | 70 | |
a3d58ffc DM |
71 | $restart_request = 1; |
72 | } | |
e2beb7aa | 73 | |
a3d58ffc DM |
74 | sub run { |
75 | my ($self) = @_; | |
e2beb7aa | 76 | |
a3d58ffc | 77 | local $SIG{'__WARN__'} = 'IGNORE'; # do not fill up logs |
e2beb7aa | 78 | |
a3d58ffc | 79 | for (;;) { # forever |
e2beb7aa | 80 | |
a3d58ffc | 81 | $next_update = time() + $updatetime; |
e2beb7aa | 82 | |
a3d58ffc DM |
83 | my ($ccsec, $cusec) = gettimeofday (); |
84 | eval { | |
85 | PVE::Cluster::cfs_update(); | |
86 | PVE::Firewall::update(); | |
e2beb7aa | 87 | }; |
e2beb7aa | 88 | my $err = $@; |
a3d58ffc | 89 | |
e2beb7aa | 90 | if ($err) { |
a3d58ffc | 91 | syslog('err', "status update error: $err"); |
e2beb7aa | 92 | } |
e2beb7aa | 93 | |
a3d58ffc DM |
94 | my ($ccsec_end, $cusec_end) = gettimeofday (); |
95 | my $cptime = ($ccsec_end-$ccsec) + ($cusec_end - $cusec)/1000000; | |
e2beb7aa | 96 | |
a3d58ffc DM |
97 | syslog('info', sprintf("firewall update time (%.3f seconds)", $cptime)) |
98 | if ($cptime > 5); | |
e2beb7aa | 99 | |
a3d58ffc | 100 | $cycle++; |
e2beb7aa | 101 | |
a3d58ffc DM |
102 | my $mem = PVE::ProcFSTools::read_memory_usage(); |
103 | ||
104 | if (!defined($initial_memory_usage) || ($cycle < 10)) { | |
105 | $initial_memory_usage = $mem->{resident}; | |
106 | } else { | |
107 | my $diff = $mem->{resident} - $initial_memory_usage; | |
108 | if ($diff > 5*1024*1024) { | |
109 | syslog ('info', "restarting server after $cycle cycles to " . | |
110 | "reduce memory usage (free $mem->{resident} ($diff) bytes)"); | |
111 | $self->restart_daemon(); | |
e2beb7aa DM |
112 | } |
113 | } | |
114 | ||
a3d58ffc DM |
115 | my $wcount = 0; |
116 | while ((time() < $next_update) && | |
117 | ($wcount < $updatetime) && # protect against time wrap | |
118 | !$restart_request) { $wcount++; sleep (1); }; | |
119 | ||
120 | $self->restart_daemon() if $restart_request; | |
121 | } | |
122 | } | |
123 | ||
124 | $daemon->register_start_command(__PACKAGE__, | |
125 | "Start the Proxmox VE firewall service."); | |
126 | $daemon->register_restart_command(__PACKAGE__, | |
127 | "Restart the Proxmox VE firewall service."); | |
128 | $daemon->register_stop_command(__PACKAGE__, | |
129 | "Stop firewall. This removes all Proxmox VE " . | |
130 | "related iptable rules. " . | |
131 | "The host is unprotected afterwards."); | |
e2beb7aa DM |
132 | |
133 | __PACKAGE__->register_method ({ | |
134 | name => 'status', | |
135 | path => 'status', | |
136 | method => 'GET', | |
137 | description => "Get firewall status.", | |
138 | parameters => { | |
139 | additionalProperties => 0, | |
140 | properties => {}, | |
141 | }, | |
142 | returns => { | |
143 | type => 'object', | |
144 | additionalProperties => 0, | |
145 | properties => { | |
146 | status => { | |
147 | type => 'string', | |
55fad3b7 DM |
148 | enum => ['unknown', 'stopped', 'running'], |
149 | }, | |
150 | enable => { | |
151 | description => "Firewall is enabled (in 'cluster.fw')", | |
152 | type => 'boolean', | |
e2beb7aa DM |
153 | }, |
154 | changes => { | |
155 | description => "Set when there are pending changes.", | |
156 | type => 'boolean', | |
157 | optional => 1, | |
158 | } | |
159 | }, | |
160 | }, | |
161 | code => sub { | |
162 | my ($param) = @_; | |
163 | ||
164 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
165 | ||
166 | my $code = sub { | |
167 | ||
a3d58ffc | 168 | my $status = $daemon->running() ? 'running' : 'stopped'; |
e2beb7aa DM |
169 | |
170 | my $res = { status => $status }; | |
55fad3b7 DM |
171 | |
172 | my $verbose = 1; # show syntax errors | |
173 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(undef, $verbose); | |
174 | $res->{enable} = $cluster_conf->{options}->{enable} ? 1 : 0; | |
175 | ||
176 | if ($status eq 'running') { | |
d4cda423 | 177 | |
638c755a | 178 | my ($ruleset, $ipset_ruleset, $rulesetv6) = PVE::Firewall::compile($cluster_conf, undef, undef, $verbose); |
e2beb7aa | 179 | |
d4cda423 DM |
180 | $verbose = 0; # do not show iptables details |
181 | my (undef, undef, $ipset_changes) = PVE::Firewall::get_ipset_cmdlist($ipset_ruleset, $verbose); | |
55fad3b7 | 182 | my ($test, $ruleset_changes) = PVE::Firewall::get_ruleset_cmdlist($ruleset, $verbose); |
17da5c0f AD |
183 | my (undef, $ruleset_changesv6) = PVE::Firewall::get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables"); |
184 | ||
185 | $res->{changes} = ($ipset_changes || $ruleset_changes || $ruleset_changesv6) ? 1 : 0; | |
e2beb7aa DM |
186 | } |
187 | ||
188 | return $res; | |
189 | }; | |
190 | ||
191 | return PVE::Firewall::run_locked($code); | |
192 | }}); | |
193 | ||
194 | __PACKAGE__->register_method ({ | |
195 | name => 'compile', | |
196 | path => 'compile', | |
3324948a | 197 | method => 'GET', |
16adff04 | 198 | description => "Compile and print firewall rules. This is useful for testing.", |
e2beb7aa DM |
199 | parameters => { |
200 | additionalProperties => 0, | |
201 | properties => {}, | |
202 | }, | |
203 | returns => { type => 'null' }, | |
204 | ||
205 | code => sub { | |
206 | my ($param) = @_; | |
207 | ||
208 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
209 | ||
210 | my $code = sub { | |
e2beb7aa | 211 | |
d4cda423 DM |
212 | my $verbose = 1; |
213 | ||
55fad3b7 | 214 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(undef, $verbose); |
638c755a | 215 | my ($ruleset, $ipset_ruleset, $rulesetv6) = PVE::Firewall::compile($cluster_conf, undef, undef, $verbose); |
d4cda423 | 216 | |
1cc9bd90 | 217 | print "ipset cmdlist:\n"; |
d4cda423 | 218 | my (undef, undef, $ipset_changes) = PVE::Firewall::get_ipset_cmdlist($ipset_ruleset, $verbose); |
1cc9bd90 DM |
219 | |
220 | print "\niptables cmdlist:\n"; | |
d4cda423 | 221 | my (undef, $ruleset_changes) = PVE::Firewall::get_ruleset_cmdlist($ruleset, $verbose); |
1cc9bd90 DM |
222 | |
223 | print "\nip6tables cmdlist:\n"; | |
17da5c0f | 224 | my (undef, $ruleset_changesv6) = PVE::Firewall::get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables"); |
55fad3b7 | 225 | |
17da5c0f | 226 | if ($ipset_changes || $ruleset_changes || $ruleset_changesv6) { |
e2beb7aa DM |
227 | print "detected changes\n"; |
228 | } else { | |
229 | print "no changes\n"; | |
230 | } | |
55fad3b7 DM |
231 | if (!$cluster_conf->{options}->{enable}) { |
232 | print "firewall disabled\n"; | |
233 | } | |
234 | ||
e2beb7aa DM |
235 | }; |
236 | ||
237 | PVE::Firewall::run_locked($code); | |
238 | ||
239 | return undef; | |
240 | }}); | |
241 | ||
e7fb6ff2 DM |
242 | __PACKAGE__->register_method ({ |
243 | name => 'localnet', | |
244 | path => 'localnet', | |
245 | method => 'GET', | |
246 | description => "Print information about local network.", | |
247 | parameters => { | |
248 | additionalProperties => 0, | |
249 | properties => {}, | |
250 | }, | |
251 | returns => { type => 'null' }, | |
252 | code => sub { | |
253 | my ($param) = @_; | |
254 | ||
255 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
256 | ||
257 | my $nodename = PVE::INotify::nodename(); | |
258 | print "local hostname: $nodename\n"; | |
259 | ||
260 | my $ip = PVE::Cluster::remote_node_ip($nodename); | |
261 | print "local IP address: $ip\n"; | |
262 | ||
263 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(); | |
264 | ||
265 | my $localnet = PVE::Firewall::local_network() || '127.0.0.0/8'; | |
266 | print "network auto detect: $localnet\n"; | |
267 | if ($cluster_conf->{aliases}->{local_network}) { | |
268 | print "using user defined local_network: $cluster_conf->{aliases}->{local_network}->{cidr}\n"; | |
269 | } else { | |
270 | print "using detected local_network: $localnet\n"; | |
271 | } | |
272 | ||
273 | return undef; | |
274 | }}); | |
275 | ||
814de832 DM |
276 | __PACKAGE__->register_method ({ |
277 | name => 'simulate', | |
278 | path => 'simulate', | |
3324948a | 279 | method => 'GET', |
c9902e5a | 280 | description => "Simulate firewall rules. This does not simulate kernel 'routing' table. Instead, this simply assumes that routing from source zone to destination zone is possible.", |
814de832 DM |
281 | parameters => { |
282 | additionalProperties => 0, | |
283 | properties => { | |
284 | verbose => { | |
285 | description => "Verbose output.", | |
286 | type => 'boolean', | |
287 | optional => 1, | |
288 | default => 0, | |
289 | }, | |
290 | from => { | |
291 | description => "Source zone.", | |
292 | type => 'string', | |
293 | pattern => '(host|outside|vm\d+|ct\d+|vmbr\d+/\S+)', | |
294 | optional => 1, | |
295 | default => 'outside', | |
296 | }, | |
297 | to => { | |
298 | description => "Destination zone.", | |
299 | type => 'string', | |
300 | pattern => '(host|outside|vm\d+|ct\d+|vmbr\d+/\S+)', | |
301 | optional => 1, | |
302 | default => 'host', | |
303 | }, | |
304 | protocol => { | |
305 | description => "Protocol.", | |
306 | type => 'string', | |
307 | pattern => '(tcp|udp)', | |
308 | optional => 1, | |
309 | default => 'tcp', | |
310 | }, | |
311 | dport => { | |
312 | description => "Destination port.", | |
313 | type => 'integer', | |
314 | minValue => 1, | |
315 | maxValue => 65535, | |
316 | optional => 1, | |
317 | }, | |
318 | sport => { | |
319 | description => "Source port.", | |
320 | type => 'integer', | |
321 | minValue => 1, | |
322 | maxValue => 65535, | |
323 | optional => 1, | |
324 | }, | |
325 | source => { | |
326 | description => "Source IP address.", | |
327 | type => 'string', format => 'ipv4', | |
328 | optional => 1, | |
329 | }, | |
330 | dest => { | |
331 | description => "Destination IP address.", | |
332 | type => 'string', format => 'ipv4', | |
333 | optional => 1, | |
334 | }, | |
335 | }, | |
336 | }, | |
337 | returns => { type => 'null' }, | |
338 | code => sub { | |
339 | my ($param) = @_; | |
340 | ||
815b4ebf DM |
341 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog |
342 | ||
638c755a | 343 | my ($ruleset, $ipset_ruleset, $rulesetv6) = PVE::Firewall::compile(undef, undef, undef, $param->{verbose}); |
814de832 DM |
344 | |
345 | PVE::FirewallSimulator::debug($param->{verbose} || 0); | |
346 | ||
347 | my $host_ip = PVE::Cluster::remote_node_ip($nodename); | |
348 | ||
349 | PVE::FirewallSimulator::reset_trace(); | |
350 | print Dumper($ruleset) if $param->{verbose}; | |
351 | ||
352 | my $test = { | |
353 | from => $param->{from}, | |
354 | to => $param->{to}, | |
355 | proto => $param->{protocol} || 'tcp', | |
356 | source => $param->{source}, | |
357 | dest => $param->{dest}, | |
358 | dport => $param->{dport}, | |
359 | sport => $param->{sport}, | |
360 | }; | |
361 | ||
362 | if (!defined($test->{to})) { | |
363 | $test->{to} = 'host'; | |
364 | PVE::FirewallSimulator::add_trace("Set Zone: to => '$test->{to}'\n"); | |
365 | } | |
366 | if (!defined($test->{from})) { | |
367 | $test->{from} = 'outside', | |
368 | PVE::FirewallSimulator::add_trace("Set Zone: from => '$test->{from}'\n"); | |
369 | } | |
370 | ||
371 | my $vmdata = PVE::Firewall::read_local_vm_config(); | |
372 | ||
373 | print "Test packet:\n"; | |
374 | ||
375 | foreach my $k (qw(from to proto source dest dport sport)) { | |
376 | printf(" %-8s: %s\n", $k, $test->{$k}) if defined($test->{$k}); | |
377 | } | |
378 | ||
379 | $test->{action} = 'QUERY'; | |
380 | ||
381 | my $res = PVE::FirewallSimulator::simulate_firewall($ruleset, $ipset_ruleset, | |
382 | $host_ip, $vmdata, $test); | |
383 | ||
384 | print "ACTION: $res\n"; | |
385 | ||
386 | return undef; | |
387 | }}); | |
e2beb7aa DM |
388 | |
389 | my $cmddef = { | |
390 | start => [ __PACKAGE__, 'start', []], | |
a3d58ffc | 391 | restart => [ __PACKAGE__, 'restart', []], |
e2beb7aa DM |
392 | stop => [ __PACKAGE__, 'stop', []], |
393 | compile => [ __PACKAGE__, 'compile', []], | |
814de832 | 394 | simulate => [ __PACKAGE__, 'simulate', []], |
e7fb6ff2 | 395 | localnet => [ __PACKAGE__, 'localnet', []], |
e2beb7aa DM |
396 | status => [ __PACKAGE__, 'status', [], undef, sub { |
397 | my $res = shift; | |
55fad3b7 DM |
398 | my $status = ($res->{enable} ? "enabled" : "disabled") . '/' . $res->{status}; |
399 | ||
e2beb7aa | 400 | if ($res->{changes}) { |
55fad3b7 | 401 | print "Status: $status (pending changes)\n"; |
e2beb7aa | 402 | } else { |
55fad3b7 | 403 | print "Status: $status\n"; |
e2beb7aa DM |
404 | } |
405 | }], | |
406 | }; | |
407 | ||
408 | my $cmd = shift; | |
409 | ||
410 | PVE::CLIHandler::handle_cmd($cmddef, $0, $cmd, \@ARGV, undef, $0); | |
411 | ||
412 | exit (0); | |
413 | ||
414 | __END__ | |
415 | ||
416 | =head1 NAME | |
417 | ||
16adff04 | 418 | pve-firewall - PVE Firewall Daemon |
e2beb7aa DM |
419 | |
420 | =head1 SYNOPSIS | |
421 | ||
16adff04 | 422 | =include synopsis |
e2beb7aa DM |
423 | |
424 | =head1 DESCRIPTION | |
425 | ||
426 | This service updates iptables rules periodically. | |
427 | ||
16adff04 | 428 | =include pve_copyright |