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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 | |
cf10b505 DM |
21 | $SIG{'__WARN__'} = sub { |
22 | my $err = $@; | |
23 | my $t = $_[0]; | |
24 | chomp $t; | |
25 | print STDERR "$t\n"; | |
26 | syslog('warning', "%s", $t); | |
27 | $@ = $err; | |
28 | }; | |
29 | ||
a3d58ffc | 30 | my $cmdline = [$0, @ARGV]; |
e2beb7aa | 31 | |
a3d58ffc | 32 | my %daemon_options = (restart_on_error => 5, stop_wait_time => 5); |
e2beb7aa | 33 | |
8e471378 | 34 | my $daemon = __PACKAGE__->new('pve-firewall', $cmdline, %daemon_options); |
e2beb7aa DM |
35 | |
36 | my $rpcenv = PVE::RPCEnvironment->init('cli'); | |
37 | ||
38 | $rpcenv->init_request(); | |
39 | $rpcenv->set_language($ENV{LANG}); | |
40 | $rpcenv->set_user('root@pam'); | |
41 | ||
814de832 DM |
42 | my $nodename = PVE::INotify::nodename(); |
43 | ||
a3d58ffc | 44 | sub init { |
e2beb7aa | 45 | |
a3d58ffc DM |
46 | PVE::Cluster::cfs_update(); |
47 | ||
48 | PVE::Firewall::init(); | |
e2beb7aa DM |
49 | } |
50 | ||
51 | my $restart_request = 0; | |
52 | my $next_update = 0; | |
53 | ||
54 | my $cycle = 0; | |
55 | my $updatetime = 10; | |
56 | ||
57 | my $initial_memory_usage; | |
58 | ||
a3d58ffc DM |
59 | sub shutdown { |
60 | my ($self) = @_; | |
e2beb7aa | 61 | |
a3d58ffc | 62 | syslog('info' , "server closing"); |
e2beb7aa | 63 | |
a3d58ffc DM |
64 | # wait for children |
65 | 1 while (waitpid(-1, POSIX::WNOHANG()) > 0); | |
e2beb7aa | 66 | |
a3d58ffc | 67 | syslog('info' , "clear firewall rules"); |
e2beb7aa | 68 | |
a3d58ffc DM |
69 | eval { PVE::Firewall::remove_pvefw_chains(); }; |
70 | warn $@ if $@; | |
e2beb7aa | 71 | |
a3d58ffc DM |
72 | $self->exit_daemon(0); |
73 | } | |
e2beb7aa | 74 | |
a3d58ffc DM |
75 | sub hup { |
76 | my ($self) = @_; | |
e2beb7aa | 77 | |
a3d58ffc DM |
78 | $restart_request = 1; |
79 | } | |
e2beb7aa | 80 | |
a3d58ffc DM |
81 | sub run { |
82 | my ($self) = @_; | |
e2beb7aa | 83 | |
a3d58ffc | 84 | local $SIG{'__WARN__'} = 'IGNORE'; # do not fill up logs |
e2beb7aa | 85 | |
a3d58ffc | 86 | for (;;) { # forever |
e2beb7aa | 87 | |
a3d58ffc | 88 | $next_update = time() + $updatetime; |
e2beb7aa | 89 | |
a3d58ffc DM |
90 | my ($ccsec, $cusec) = gettimeofday (); |
91 | eval { | |
92 | PVE::Cluster::cfs_update(); | |
93 | PVE::Firewall::update(); | |
e2beb7aa | 94 | }; |
e2beb7aa | 95 | my $err = $@; |
a3d58ffc | 96 | |
e2beb7aa | 97 | if ($err) { |
a3d58ffc | 98 | syslog('err', "status update error: $err"); |
e2beb7aa | 99 | } |
e2beb7aa | 100 | |
a3d58ffc DM |
101 | my ($ccsec_end, $cusec_end) = gettimeofday (); |
102 | my $cptime = ($ccsec_end-$ccsec) + ($cusec_end - $cusec)/1000000; | |
e2beb7aa | 103 | |
a3d58ffc DM |
104 | syslog('info', sprintf("firewall update time (%.3f seconds)", $cptime)) |
105 | if ($cptime > 5); | |
e2beb7aa | 106 | |
a3d58ffc | 107 | $cycle++; |
e2beb7aa | 108 | |
a3d58ffc DM |
109 | my $mem = PVE::ProcFSTools::read_memory_usage(); |
110 | ||
111 | if (!defined($initial_memory_usage) || ($cycle < 10)) { | |
112 | $initial_memory_usage = $mem->{resident}; | |
113 | } else { | |
114 | my $diff = $mem->{resident} - $initial_memory_usage; | |
115 | if ($diff > 5*1024*1024) { | |
116 | syslog ('info', "restarting server after $cycle cycles to " . | |
117 | "reduce memory usage (free $mem->{resident} ($diff) bytes)"); | |
118 | $self->restart_daemon(); | |
e2beb7aa DM |
119 | } |
120 | } | |
121 | ||
a3d58ffc DM |
122 | my $wcount = 0; |
123 | while ((time() < $next_update) && | |
124 | ($wcount < $updatetime) && # protect against time wrap | |
125 | !$restart_request) { $wcount++; sleep (1); }; | |
126 | ||
127 | $self->restart_daemon() if $restart_request; | |
128 | } | |
129 | } | |
130 | ||
131 | $daemon->register_start_command(__PACKAGE__, | |
132 | "Start the Proxmox VE firewall service."); | |
e3087bc6 | 133 | $daemon->register_restart_command(__PACKAGE__, 1, |
a3d58ffc DM |
134 | "Restart the Proxmox VE firewall service."); |
135 | $daemon->register_stop_command(__PACKAGE__, | |
136 | "Stop firewall. This removes all Proxmox VE " . | |
137 | "related iptable rules. " . | |
138 | "The host is unprotected afterwards."); | |
e2beb7aa DM |
139 | |
140 | __PACKAGE__->register_method ({ | |
141 | name => 'status', | |
142 | path => 'status', | |
143 | method => 'GET', | |
144 | description => "Get firewall status.", | |
145 | parameters => { | |
146 | additionalProperties => 0, | |
147 | properties => {}, | |
148 | }, | |
149 | returns => { | |
150 | type => 'object', | |
151 | additionalProperties => 0, | |
152 | properties => { | |
153 | status => { | |
154 | type => 'string', | |
55fad3b7 DM |
155 | enum => ['unknown', 'stopped', 'running'], |
156 | }, | |
157 | enable => { | |
158 | description => "Firewall is enabled (in 'cluster.fw')", | |
159 | type => 'boolean', | |
e2beb7aa DM |
160 | }, |
161 | changes => { | |
162 | description => "Set when there are pending changes.", | |
163 | type => 'boolean', | |
164 | optional => 1, | |
165 | } | |
166 | }, | |
167 | }, | |
168 | code => sub { | |
169 | my ($param) = @_; | |
170 | ||
171 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
172 | ||
173 | my $code = sub { | |
174 | ||
a3d58ffc | 175 | my $status = $daemon->running() ? 'running' : 'stopped'; |
e2beb7aa DM |
176 | |
177 | my $res = { status => $status }; | |
55fad3b7 DM |
178 | |
179 | my $verbose = 1; # show syntax errors | |
180 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(undef, $verbose); | |
181 | $res->{enable} = $cluster_conf->{options}->{enable} ? 1 : 0; | |
182 | ||
183 | if ($status eq 'running') { | |
d4cda423 | 184 | |
638c755a | 185 | my ($ruleset, $ipset_ruleset, $rulesetv6) = PVE::Firewall::compile($cluster_conf, undef, undef, $verbose); |
e2beb7aa | 186 | |
d4cda423 DM |
187 | $verbose = 0; # do not show iptables details |
188 | my (undef, undef, $ipset_changes) = PVE::Firewall::get_ipset_cmdlist($ipset_ruleset, $verbose); | |
55fad3b7 | 189 | my ($test, $ruleset_changes) = PVE::Firewall::get_ruleset_cmdlist($ruleset, $verbose); |
17da5c0f AD |
190 | my (undef, $ruleset_changesv6) = PVE::Firewall::get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables"); |
191 | ||
192 | $res->{changes} = ($ipset_changes || $ruleset_changes || $ruleset_changesv6) ? 1 : 0; | |
e2beb7aa DM |
193 | } |
194 | ||
195 | return $res; | |
196 | }; | |
197 | ||
198 | return PVE::Firewall::run_locked($code); | |
199 | }}); | |
200 | ||
201 | __PACKAGE__->register_method ({ | |
202 | name => 'compile', | |
203 | path => 'compile', | |
3324948a | 204 | method => 'GET', |
16adff04 | 205 | description => "Compile and print firewall rules. This is useful for testing.", |
e2beb7aa DM |
206 | parameters => { |
207 | additionalProperties => 0, | |
208 | properties => {}, | |
209 | }, | |
210 | returns => { type => 'null' }, | |
211 | ||
212 | code => sub { | |
213 | my ($param) = @_; | |
214 | ||
215 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
216 | ||
217 | my $code = sub { | |
e2beb7aa | 218 | |
d4cda423 DM |
219 | my $verbose = 1; |
220 | ||
55fad3b7 | 221 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(undef, $verbose); |
638c755a | 222 | my ($ruleset, $ipset_ruleset, $rulesetv6) = PVE::Firewall::compile($cluster_conf, undef, undef, $verbose); |
d4cda423 | 223 | |
1cc9bd90 | 224 | print "ipset cmdlist:\n"; |
d4cda423 | 225 | my (undef, undef, $ipset_changes) = PVE::Firewall::get_ipset_cmdlist($ipset_ruleset, $verbose); |
1cc9bd90 DM |
226 | |
227 | print "\niptables cmdlist:\n"; | |
d4cda423 | 228 | my (undef, $ruleset_changes) = PVE::Firewall::get_ruleset_cmdlist($ruleset, $verbose); |
1cc9bd90 DM |
229 | |
230 | print "\nip6tables cmdlist:\n"; | |
17da5c0f | 231 | my (undef, $ruleset_changesv6) = PVE::Firewall::get_ruleset_cmdlist($rulesetv6, $verbose, "ip6tables"); |
55fad3b7 | 232 | |
17da5c0f | 233 | if ($ipset_changes || $ruleset_changes || $ruleset_changesv6) { |
e2beb7aa DM |
234 | print "detected changes\n"; |
235 | } else { | |
236 | print "no changes\n"; | |
237 | } | |
55fad3b7 DM |
238 | if (!$cluster_conf->{options}->{enable}) { |
239 | print "firewall disabled\n"; | |
240 | } | |
241 | ||
e2beb7aa DM |
242 | }; |
243 | ||
244 | PVE::Firewall::run_locked($code); | |
245 | ||
246 | return undef; | |
247 | }}); | |
248 | ||
e7fb6ff2 DM |
249 | __PACKAGE__->register_method ({ |
250 | name => 'localnet', | |
251 | path => 'localnet', | |
252 | method => 'GET', | |
253 | description => "Print information about local network.", | |
254 | parameters => { | |
255 | additionalProperties => 0, | |
256 | properties => {}, | |
257 | }, | |
258 | returns => { type => 'null' }, | |
259 | code => sub { | |
260 | my ($param) = @_; | |
261 | ||
262 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog | |
263 | ||
264 | my $nodename = PVE::INotify::nodename(); | |
265 | print "local hostname: $nodename\n"; | |
266 | ||
267 | my $ip = PVE::Cluster::remote_node_ip($nodename); | |
268 | print "local IP address: $ip\n"; | |
269 | ||
270 | my $cluster_conf = PVE::Firewall::load_clusterfw_conf(); | |
271 | ||
272 | my $localnet = PVE::Firewall::local_network() || '127.0.0.0/8'; | |
273 | print "network auto detect: $localnet\n"; | |
274 | if ($cluster_conf->{aliases}->{local_network}) { | |
275 | print "using user defined local_network: $cluster_conf->{aliases}->{local_network}->{cidr}\n"; | |
276 | } else { | |
277 | print "using detected local_network: $localnet\n"; | |
278 | } | |
279 | ||
280 | return undef; | |
281 | }}); | |
282 | ||
814de832 DM |
283 | __PACKAGE__->register_method ({ |
284 | name => 'simulate', | |
285 | path => 'simulate', | |
3324948a | 286 | method => 'GET', |
c9902e5a | 287 | 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 |
288 | parameters => { |
289 | additionalProperties => 0, | |
290 | properties => { | |
291 | verbose => { | |
292 | description => "Verbose output.", | |
293 | type => 'boolean', | |
294 | optional => 1, | |
295 | default => 0, | |
296 | }, | |
297 | from => { | |
298 | description => "Source zone.", | |
299 | type => 'string', | |
300 | pattern => '(host|outside|vm\d+|ct\d+|vmbr\d+/\S+)', | |
301 | optional => 1, | |
302 | default => 'outside', | |
303 | }, | |
304 | to => { | |
305 | description => "Destination zone.", | |
306 | type => 'string', | |
307 | pattern => '(host|outside|vm\d+|ct\d+|vmbr\d+/\S+)', | |
308 | optional => 1, | |
309 | default => 'host', | |
310 | }, | |
311 | protocol => { | |
312 | description => "Protocol.", | |
313 | type => 'string', | |
314 | pattern => '(tcp|udp)', | |
315 | optional => 1, | |
316 | default => 'tcp', | |
317 | }, | |
318 | dport => { | |
319 | description => "Destination port.", | |
320 | type => 'integer', | |
321 | minValue => 1, | |
322 | maxValue => 65535, | |
323 | optional => 1, | |
324 | }, | |
325 | sport => { | |
326 | description => "Source port.", | |
327 | type => 'integer', | |
328 | minValue => 1, | |
329 | maxValue => 65535, | |
330 | optional => 1, | |
331 | }, | |
332 | source => { | |
333 | description => "Source IP address.", | |
334 | type => 'string', format => 'ipv4', | |
335 | optional => 1, | |
336 | }, | |
337 | dest => { | |
338 | description => "Destination IP address.", | |
339 | type => 'string', format => 'ipv4', | |
340 | optional => 1, | |
341 | }, | |
342 | }, | |
343 | }, | |
344 | returns => { type => 'null' }, | |
345 | code => sub { | |
346 | my ($param) = @_; | |
347 | ||
815b4ebf DM |
348 | local $SIG{'__WARN__'} = 'DEFAULT'; # do not fill up syslog |
349 | ||
638c755a | 350 | my ($ruleset, $ipset_ruleset, $rulesetv6) = PVE::Firewall::compile(undef, undef, undef, $param->{verbose}); |
814de832 DM |
351 | |
352 | PVE::FirewallSimulator::debug($param->{verbose} || 0); | |
353 | ||
354 | my $host_ip = PVE::Cluster::remote_node_ip($nodename); | |
355 | ||
356 | PVE::FirewallSimulator::reset_trace(); | |
357 | print Dumper($ruleset) if $param->{verbose}; | |
358 | ||
359 | my $test = { | |
360 | from => $param->{from}, | |
361 | to => $param->{to}, | |
362 | proto => $param->{protocol} || 'tcp', | |
363 | source => $param->{source}, | |
364 | dest => $param->{dest}, | |
365 | dport => $param->{dport}, | |
366 | sport => $param->{sport}, | |
367 | }; | |
368 | ||
369 | if (!defined($test->{to})) { | |
370 | $test->{to} = 'host'; | |
371 | PVE::FirewallSimulator::add_trace("Set Zone: to => '$test->{to}'\n"); | |
372 | } | |
373 | if (!defined($test->{from})) { | |
374 | $test->{from} = 'outside', | |
375 | PVE::FirewallSimulator::add_trace("Set Zone: from => '$test->{from}'\n"); | |
376 | } | |
377 | ||
378 | my $vmdata = PVE::Firewall::read_local_vm_config(); | |
379 | ||
380 | print "Test packet:\n"; | |
381 | ||
382 | foreach my $k (qw(from to proto source dest dport sport)) { | |
383 | printf(" %-8s: %s\n", $k, $test->{$k}) if defined($test->{$k}); | |
384 | } | |
385 | ||
386 | $test->{action} = 'QUERY'; | |
387 | ||
388 | my $res = PVE::FirewallSimulator::simulate_firewall($ruleset, $ipset_ruleset, | |
389 | $host_ip, $vmdata, $test); | |
390 | ||
391 | print "ACTION: $res\n"; | |
392 | ||
393 | return undef; | |
394 | }}); | |
e2beb7aa DM |
395 | |
396 | my $cmddef = { | |
397 | start => [ __PACKAGE__, 'start', []], | |
a3d58ffc | 398 | restart => [ __PACKAGE__, 'restart', []], |
e2beb7aa DM |
399 | stop => [ __PACKAGE__, 'stop', []], |
400 | compile => [ __PACKAGE__, 'compile', []], | |
814de832 | 401 | simulate => [ __PACKAGE__, 'simulate', []], |
e7fb6ff2 | 402 | localnet => [ __PACKAGE__, 'localnet', []], |
e2beb7aa DM |
403 | status => [ __PACKAGE__, 'status', [], undef, sub { |
404 | my $res = shift; | |
55fad3b7 DM |
405 | my $status = ($res->{enable} ? "enabled" : "disabled") . '/' . $res->{status}; |
406 | ||
e2beb7aa | 407 | if ($res->{changes}) { |
55fad3b7 | 408 | print "Status: $status (pending changes)\n"; |
e2beb7aa | 409 | } else { |
55fad3b7 | 410 | print "Status: $status\n"; |
e2beb7aa DM |
411 | } |
412 | }], | |
413 | }; | |
414 | ||
415 | my $cmd = shift; | |
416 | ||
417 | PVE::CLIHandler::handle_cmd($cmddef, $0, $cmd, \@ARGV, undef, $0); | |
418 | ||
419 | exit (0); | |
420 | ||
421 | __END__ | |
422 | ||
423 | =head1 NAME | |
424 | ||
16adff04 | 425 | pve-firewall - PVE Firewall Daemon |
e2beb7aa DM |
426 | |
427 | =head1 SYNOPSIS | |
428 | ||
16adff04 | 429 | =include synopsis |
e2beb7aa DM |
430 | |
431 | =head1 DESCRIPTION | |
432 | ||
433 | This service updates iptables rules periodically. | |
434 | ||
16adff04 | 435 | =include pve_copyright |