bump version to 3.0-3
[pve-access-control.git] / PVE / AccessControl.pm
1 package PVE::AccessControl;
2
3 use strict;
4 use Encode;
5 use Crypt::OpenSSL::Random;
6 use Crypt::OpenSSL::RSA;
7 use MIME::Base64;
8 use Digest::SHA;
9 use PVE::Tools qw(run_command lock_file file_get_contents split_list safe_print);
10 use PVE::Cluster qw(cfs_register_file cfs_read_file cfs_write_file cfs_lock_file);
11 use PVE::JSONSchema;
12
13 use PVE::Auth::Plugin;
14 use PVE::Auth::AD;
15 use PVE::Auth::LDAP;
16 use PVE::Auth::PVE;
17 use PVE::Auth::PAM;
18
19 use Data::Dumper; # fixme: remove
20
21 # load and initialize all plugins
22
23 PVE::Auth::AD->register();
24 PVE::Auth::LDAP->register();
25 PVE::Auth::PVE->register();
26 PVE::Auth::PAM->register();
27 PVE::Auth::Plugin->init();
28
29 # $authdir must be writable by root only!
30 my $confdir = "/etc/pve";
31 my $authdir = "$confdir/priv";
32 my $authprivkeyfn = "$authdir/authkey.key";
33 my $authpubkeyfn = "$confdir/authkey.pub";
34 my $pve_www_key_fn = "$confdir/pve-www.key";
35
36 my $ticket_lifetime = 3600*2; # 2 hours
37
38 Crypt::OpenSSL::RSA->import_random_seed();
39
40 cfs_register_file('user.cfg',
41 \&parse_user_config,
42 \&write_user_config);
43
44
45 sub verify_username {
46 PVE::Auth::Plugin::verify_username(@_);
47 }
48
49 sub pve_verify_realm {
50 PVE::Auth::Plugin::pve_verify_realm(@_);
51 }
52
53 sub lock_user_config {
54 my ($code, $errmsg) = @_;
55
56 cfs_lock_file("user.cfg", undef, $code);
57 if (my $err = $@) {
58 $errmsg ? die "$errmsg: $err" : die $err;
59 }
60 }
61
62 my $pve_auth_pub_key;
63 sub get_pubkey {
64
65 return $pve_auth_pub_key if $pve_auth_pub_key;
66
67 my $input = PVE::Tools::file_get_contents($authpubkeyfn);
68
69 $pve_auth_pub_key = Crypt::OpenSSL::RSA->new_public_key($input);
70
71 return $pve_auth_pub_key;
72 }
73
74 my $csrf_prevention_secret;
75 my $get_csrfr_secret = sub {
76 if (!$csrf_prevention_secret) {
77 my $input = PVE::Tools::file_get_contents($pve_www_key_fn);
78 $csrf_prevention_secret = Digest::SHA::sha1_base64($input);
79 }
80 return $csrf_prevention_secret;
81 };
82
83 sub assemble_csrf_prevention_token {
84 my ($username) = @_;
85
86 my $timestamp = sprintf("%08X", time());
87
88 my $digest = Digest::SHA::sha1_base64("$timestamp:$username", &$get_csrfr_secret());
89
90 return "$timestamp:$digest";
91 }
92
93 sub verify_csrf_prevention_token {
94 my ($username, $token, $noerr) = @_;
95
96 if ($token =~ m/^([A-Z0-9]{8}):(\S+)$/) {
97 my $sig = $2;
98 my $timestamp = $1;
99 my $ttime = hex($timestamp);
100
101 my $digest = Digest::SHA::sha1_base64("$timestamp:$username", &$get_csrfr_secret());
102
103 my $age = time() - $ttime;
104 return if ($digest eq $sig) && ($age > -300) && ($age < $ticket_lifetime);
105 }
106
107 die "Permission denied - invalid csrf token\n" if !$noerr;
108
109 return undef;
110 }
111
112 my $pve_auth_priv_key;
113 sub get_privkey {
114
115 return $pve_auth_priv_key if $pve_auth_priv_key;
116
117 my $input = PVE::Tools::file_get_contents($authprivkeyfn);
118
119 $pve_auth_priv_key = Crypt::OpenSSL::RSA->new_private_key($input);
120
121 return $pve_auth_priv_key;
122 }
123
124 sub assemble_ticket {
125 my ($username) = @_;
126
127 my $rsa_priv = get_privkey();
128
129 my $timestamp = sprintf("%08X", time());
130
131 my $plain = "PVE:$username:$timestamp";
132
133 my $ticket = $plain . "::" . encode_base64($rsa_priv->sign($plain), '');
134
135 return $ticket;
136 }
137
138 sub verify_ticket {
139 my ($ticket, $noerr) = @_;
140
141 if ($ticket && $ticket =~ m/^(PVE:\S+)::([^:\s]+)$/) {
142 my $plain = $1;
143 my $sig = $2;
144
145 my $rsa_pub = get_pubkey();
146 if ($rsa_pub->verify($plain, decode_base64($sig))) {
147 if ($plain =~ m/^PVE:(\S+):([A-Z0-9]{8})$/) {
148 my $username = $1;
149 my $timestamp = $2;
150 my $ttime = hex($timestamp);
151
152 my $age = time() - $ttime;
153
154 if (PVE::Auth::Plugin::verify_username($username, 1) &&
155 ($age > -300) && ($age < $ticket_lifetime)) {
156 return wantarray ? ($username, $age) : $username;
157 }
158 }
159 }
160 }
161
162 die "permission denied - invalid ticket\n" if !$noerr;
163
164 return undef;
165 }
166
167 # VNC tickets
168 # - they do not contain the username in plain text
169 # - they are restricted to a specific resource path (example: '/vms/100')
170 sub assemble_vnc_ticket {
171 my ($username, $path) = @_;
172
173 my $rsa_priv = get_privkey();
174
175 my $timestamp = sprintf("%08X", time());
176
177 my $plain = "PVEVNC:$timestamp";
178
179 $path = normalize_path($path);
180
181 my $full = "$plain:$username:$path";
182
183 my $ticket = $plain . "::" . encode_base64($rsa_priv->sign($full), '');
184
185 return $ticket;
186 }
187
188 sub verify_vnc_ticket {
189 my ($ticket, $username, $path, $noerr) = @_;
190
191 if ($ticket && $ticket =~ m/^(PVEVNC:\S+)::([^:\s]+)$/) {
192 my $plain = $1;
193 my $sig = $2;
194 my $full = "$plain:$username:$path";
195
196 my $rsa_pub = get_pubkey();
197 # Note: sign only match if $username and $path is correct
198 if ($rsa_pub->verify($full, decode_base64($sig))) {
199 if ($plain =~ m/^PVEVNC:([A-Z0-9]{8})$/) {
200 my $ttime = hex($1);
201
202 my $age = time() - $ttime;
203
204 if (($age > -20) && ($age < 40)) {
205 return 1;
206 }
207 }
208 }
209 }
210
211 die "permission denied - invalid vnc ticket\n" if !$noerr;
212
213 return undef;
214 }
215
216 sub check_user_exist {
217 my ($usercfg, $username, $noerr) = @_;
218
219 $username = PVE::Auth::Plugin::verify_username($username, $noerr);
220 return undef if !$username;
221
222 return $usercfg->{users}->{$username} if $usercfg && $usercfg->{users}->{$username};
223
224 die "no such user ('$username')\n" if !$noerr;
225
226 return undef;
227 }
228
229 sub check_user_enabled {
230 my ($usercfg, $username, $noerr) = @_;
231
232 my $data = check_user_exist($usercfg, $username, $noerr);
233 return undef if !$data;
234
235 return 1 if $data->{enable};
236
237 return 1 if $username eq 'root@pam'; # root is always enabled
238
239 die "user '$username' is disabled\n" if !$noerr;
240
241 return undef;
242 }
243
244 # password should be utf8 encoded
245 sub authenticate_user {
246 my ($username, $password) = @_;
247
248 die "no username specified\n" if !$username;
249
250 my ($ruid, $realm);
251
252 ($username, $ruid, $realm) = PVE::Auth::Plugin::verify_username($username);
253
254 my $usercfg = cfs_read_file('user.cfg');
255
256 eval { check_user_enabled($usercfg, $username); };
257 if (my $err = $@) {
258 sleep(2);
259 die $err;
260 }
261
262 my $ctime = time();
263 my $expire = $usercfg->{users}->{$username}->{expire};
264
265 if ($expire && ($expire < $ctime)) {
266 sleep(2);
267 die "account expired\n"
268 }
269
270 my $domain_cfg = cfs_read_file('domains.cfg');
271
272 eval {
273 my $cfg = $domain_cfg->{ids}->{$realm};
274 die "auth domain '$realm' does not exists\n" if !$cfg;
275 my $plugin = PVE::Auth::Plugin->lookup($cfg->{type});
276 $plugin->authenticate_user($cfg, $realm, $ruid, $password);
277 };
278 if (my $err = $@) {
279 sleep(2); # timeout after failed auth
280 die $err;
281 }
282
283 return $username;
284 }
285
286 sub domain_set_password {
287 my ($realm, $username, $password) = @_;
288
289 die "no auth domain specified" if !$realm;
290
291 my $domain_cfg = cfs_read_file('domains.cfg');
292
293 my $cfg = $domain_cfg->{ids}->{$realm};
294 die "auth domain '$realm' does not exists\n" if !$cfg;
295 my $plugin = PVE::Auth::Plugin->lookup($cfg->{type});
296 $plugin->store_password($cfg, $realm, $username, $password);
297 }
298
299 sub add_user_group {
300
301 my ($username, $usercfg, $group) = @_;
302 $usercfg->{users}->{$username}->{groups}->{$group} = 1;
303 $usercfg->{groups}->{$group}->{users}->{$username} = 1;
304 }
305
306 sub delete_user_group {
307
308 my ($username, $usercfg) = @_;
309
310 foreach my $group (keys %{$usercfg->{groups}}) {
311
312 delete ($usercfg->{groups}->{$group}->{users}->{$username})
313 if $usercfg->{groups}->{$group}->{users}->{$username};
314 }
315 }
316
317 sub delete_user_acl {
318
319 my ($username, $usercfg) = @_;
320
321 foreach my $acl (keys %{$usercfg->{acl}}) {
322
323 delete ($usercfg->{acl}->{$acl}->{users}->{$username})
324 if $usercfg->{acl}->{$acl}->{users}->{$username};
325 }
326 }
327
328 sub delete_group_acl {
329
330 my ($group, $usercfg) = @_;
331
332 foreach my $acl (keys %{$usercfg->{acl}}) {
333
334 delete ($usercfg->{acl}->{$acl}->{groups}->{$group})
335 if $usercfg->{acl}->{$acl}->{groups}->{$group};
336 }
337 }
338
339 sub delete_pool_acl {
340
341 my ($pool, $usercfg) = @_;
342
343 my $path = "/pool/$pool";
344
345 foreach my $aclpath (keys %{$usercfg->{acl}}) {
346 delete ($usercfg->{acl}->{$aclpath})
347 if $usercfg->{acl}->{$aclpath} eq 'path';
348 }
349 }
350
351 # we automatically create some predefined roles by splitting privs
352 # into 3 groups (per category)
353 # root: only root is allowed to do that
354 # admin: an administrator can to that
355 # user: a normak user/customer can to that
356 my $privgroups = {
357 VM => {
358 root => [],
359 admin => [
360 'VM.Config.Disk',
361 'VM.Config.CPU',
362 'VM.Config.Memory',
363 'VM.Config.Network',
364 'VM.Config.HWType',
365 'VM.Config.Options', # covers all other things
366 'VM.Allocate',
367 'VM.Copy',
368 'VM.Migrate',
369 'VM.Monitor',
370 'VM.Snapshot',
371 ],
372 user => [
373 'VM.Config.CDROM', # change CDROM media
374 'VM.Console',
375 'VM.Backup',
376 'VM.PowerMgmt',
377 ],
378 audit => [
379 'VM.Audit',
380 ],
381 },
382 Sys => {
383 root => [
384 'Sys.PowerMgmt',
385 'Sys.Modify', # edit/change node settings
386 ],
387 admin => [
388 'Permissions.Modify',
389 'Sys.Console',
390 'Sys.Syslog',
391 ],
392 user => [],
393 audit => [
394 'Sys.Audit',
395 ],
396 },
397 Datastore => {
398 root => [],
399 admin => [
400 'Datastore.Allocate',
401 'Datastore.AllocateTemplate',
402 ],
403 user => [
404 'Datastore.AllocateSpace',
405 ],
406 audit => [
407 'Datastore.Audit',
408 ],
409 },
410 User => {
411 root => [
412 'Realm.Allocate',
413 ],
414 admin => [
415 'User.Modify',
416 'Group.Allocate', # edit/change group settings
417 'Realm.AllocateUser',
418 ],
419 user => [],
420 audit => [],
421 },
422 Pool => {
423 root => [],
424 admin => [
425 'Pool.Allocate', # create/delete pools
426 ],
427 user => [],
428 audit => [],
429 },
430 };
431
432 my $valid_privs = {};
433
434 my $special_roles = {
435 'NoAccess' => {}, # no priviledges
436 'Administrator' => $valid_privs, # all priviledges
437 };
438
439 sub create_roles {
440
441 foreach my $cat (keys %$privgroups) {
442 my $cd = $privgroups->{$cat};
443 foreach my $p (@{$cd->{root}}, @{$cd->{admin}},
444 @{$cd->{user}}, @{$cd->{audit}}) {
445 $valid_privs->{$p} = 1;
446 }
447 foreach my $p (@{$cd->{admin}}, @{$cd->{user}}, @{$cd->{audit}}) {
448
449 $special_roles->{"PVE${cat}Admin"}->{$p} = 1;
450 $special_roles->{"PVEAdmin"}->{$p} = 1;
451 }
452 if (scalar(@{$cd->{user}})) {
453 foreach my $p (@{$cd->{user}}, @{$cd->{audit}}) {
454 $special_roles->{"PVE${cat}User"}->{$p} = 1;
455 }
456 }
457 foreach my $p (@{$cd->{audit}}) {
458 $special_roles->{"PVEAuditor"}->{$p} = 1;
459 }
460 }
461
462 $special_roles->{"PVETemplateUser"} = { 'VM.Copy' => 1, 'VM.Audit' => 1 };
463 };
464
465 create_roles();
466
467 sub add_role_privs {
468 my ($role, $usercfg, $privs) = @_;
469
470 return if !$privs;
471
472 die "role '$role' does not exist\n" if !$usercfg->{roles}->{$role};
473
474 foreach my $priv (split_list($privs)) {
475 if (defined ($valid_privs->{$priv})) {
476 $usercfg->{roles}->{$role}->{$priv} = 1;
477 } else {
478 die "invalid priviledge '$priv'\n";
479 }
480 }
481 }
482
483 sub normalize_path {
484 my $path = shift;
485
486 $path =~ s|/+|/|g;
487
488 $path =~ s|/$||;
489
490 $path = '/' if !$path;
491
492 $path = "/$path" if $path !~ m|^/|;
493
494 return undef if $path !~ m|^[[:alnum:]\-\_\/]+$|;
495
496 return $path;
497 }
498
499
500 PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname);
501 sub verify_groupname {
502 my ($groupname, $noerr) = @_;
503
504 if ($groupname !~ m/^[A-Za-z0-9\.\-_]+$/) {
505
506 die "group name '$groupname' contains invalid characters\n" if !$noerr;
507
508 return undef;
509 }
510
511 return $groupname;
512 }
513
514 PVE::JSONSchema::register_format('pve-roleid', \&verify_rolename);
515 sub verify_rolename {
516 my ($rolename, $noerr) = @_;
517
518 if ($rolename !~ m/^[A-Za-z0-9\.\-_]+$/) {
519
520 die "role name '$rolename' contains invalid characters\n" if !$noerr;
521
522 return undef;
523 }
524
525 return $rolename;
526 }
527
528 PVE::JSONSchema::register_format('pve-poolid', \&verify_groupname);
529 sub verify_poolname {
530 my ($poolname, $noerr) = @_;
531
532 if ($poolname !~ m/^[A-Za-z0-9\.\-_]+$/) {
533
534 die "pool name '$poolname' contains invalid characters\n" if !$noerr;
535
536 return undef;
537 }
538
539 return $poolname;
540 }
541
542 PVE::JSONSchema::register_format('pve-priv', \&verify_privname);
543 sub verify_privname {
544 my ($priv, $noerr) = @_;
545
546 if (!$valid_privs->{$priv}) {
547 die "invalid priviledge '$priv'\n" if !$noerr;
548
549 return undef;
550 }
551
552 return $priv;
553 }
554
555 sub userconfig_force_defaults {
556 my ($cfg) = @_;
557
558 foreach my $r (keys %$special_roles) {
559 $cfg->{roles}->{$r} = $special_roles->{$r};
560 }
561
562 # fixme: remove 'root' group (not required)?
563
564 # add root user
565 $cfg->{users}->{'root@pam'}->{enable} = 1;
566 }
567
568 sub parse_user_config {
569 my ($filename, $raw) = @_;
570
571 my $cfg = {};
572
573 userconfig_force_defaults($cfg);
574
575 while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
576 my $line = $1;
577
578 next if $line =~ m/^\s*$/; # skip empty lines
579
580 my @data;
581
582 foreach my $d (split (/:/, $line)) {
583 $d =~ s/^\s+//;
584 $d =~ s/\s+$//;
585 push @data, $d
586 }
587
588 my $et = shift @data;
589
590 if ($et eq 'user') {
591 my ($user, $enable, $expire, $firstname, $lastname, $email, $comment) = @data;
592
593 my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1);
594 if (!$realm) {
595 warn "user config - ignore user '$user' - invalid user name\n";
596 next;
597 }
598
599 $enable = $enable ? 1 : 0;
600
601 $expire = 0 if !$expire;
602
603 if ($expire !~ m/^\d+$/) {
604 warn "user config - ignore user '$user' - (illegal characters in expire '$expire')\n";
605 next;
606 }
607 $expire = int($expire);
608
609 #if (!verify_groupname ($group, 1)) {
610 # warn "user config - ignore user '$user' - invalid characters in group name\n";
611 # next;
612 #}
613
614 $cfg->{users}->{$user} = {
615 enable => $enable,
616 # group => $group,
617 };
618 $cfg->{users}->{$user}->{firstname} = PVE::Tools::decode_text($firstname) if $firstname;
619 $cfg->{users}->{$user}->{lastname} = PVE::Tools::decode_text($lastname) if $lastname;
620 $cfg->{users}->{$user}->{email} = $email;
621 $cfg->{users}->{$user}->{comment} = PVE::Tools::decode_text($comment) if $comment;
622 $cfg->{users}->{$user}->{expire} = $expire;
623
624 #$cfg->{users}->{$user}->{groups}->{$group} = 1;
625 #$cfg->{groups}->{$group}->{$user} = 1;
626
627 } elsif ($et eq 'group') {
628 my ($group, $userlist, $comment) = @data;
629
630 if (!verify_groupname($group, 1)) {
631 warn "user config - ignore group '$group' - invalid characters in group name\n";
632 next;
633 }
634
635 # make sure to add the group (even if there are no members)
636 $cfg->{groups}->{$group} = { users => {} } if !$cfg->{groups}->{$group};
637
638 $cfg->{groups}->{$group}->{comment} = PVE::Tools::decode_text($comment) if $comment;
639
640 foreach my $user (split_list($userlist)) {
641
642 if (!PVE::Auth::Plugin::verify_username($user, 1)) {
643 warn "user config - ignore invalid group member '$user'\n";
644 next;
645 }
646
647 if ($cfg->{users}->{$user}) { # user exists
648 $cfg->{users}->{$user}->{groups}->{$group} = 1;
649 $cfg->{groups}->{$group}->{users}->{$user} = 1;
650 } else {
651 warn "user config - ignore invalid group member '$user'\n";
652 }
653 }
654
655 } elsif ($et eq 'role') {
656 my ($role, $privlist) = @data;
657
658 if (!verify_rolename($role, 1)) {
659 warn "user config - ignore role '$role' - invalid characters in role name\n";
660 next;
661 }
662
663 # make sure to add the role (even if there are no privileges)
664 $cfg->{roles}->{$role} = {} if !$cfg->{roles}->{$role};
665
666 foreach my $priv (split_list($privlist)) {
667 if (defined ($valid_privs->{$priv})) {
668 $cfg->{roles}->{$role}->{$priv} = 1;
669 } else {
670 warn "user config - ignore invalid priviledge '$priv'\n";
671 }
672 }
673
674 } elsif ($et eq 'acl') {
675 my ($propagate, $pathtxt, $uglist, $rolelist) = @data;
676
677 if (my $path = normalize_path($pathtxt)) {
678 foreach my $role (split_list($rolelist)) {
679
680 if (!verify_rolename($role, 1)) {
681 warn "user config - ignore invalid role name '$role' in acl\n";
682 next;
683 }
684
685 foreach my $ug (split_list($uglist)) {
686 if ($ug =~ m/^@(\S+)$/) {
687 my $group = $1;
688 if ($cfg->{groups}->{$group}) { # group exists
689 $cfg->{acl}->{$path}->{groups}->{$group}->{$role} = $propagate;
690 } else {
691 warn "user config - ignore invalid acl group '$group'\n";
692 }
693 } elsif (PVE::Auth::Plugin::verify_username($ug, 1)) {
694 if ($cfg->{users}->{$ug}) { # user exists
695 $cfg->{acl}->{$path}->{users}->{$ug}->{$role} = $propagate;
696 } else {
697 warn "user config - ignore invalid acl member '$ug'\n";
698 }
699 } else {
700 warn "user config - invalid user/group '$ug' in acl\n";
701 }
702 }
703 }
704 } else {
705 warn "user config - ignore invalid path in acl '$pathtxt'\n";
706 }
707 } elsif ($et eq 'pool') {
708 my ($pool, $comment, $vmlist, $storelist) = @data;
709
710 if (!verify_poolname($pool, 1)) {
711 warn "user config - ignore pool '$pool' - invalid characters in pool name\n";
712 next;
713 }
714
715 # make sure to add the pool (even if there are no members)
716 $cfg->{pools}->{$pool} = { vms => {}, storage => {} } if !$cfg->{pools}->{$pool};
717
718 $cfg->{pools}->{$pool}->{comment} = PVE::Tools::decode_text($comment) if $comment;
719
720 foreach my $vmid (split_list($vmlist)) {
721 if ($vmid !~ m/^\d+$/) {
722 warn "user config - ignore invalid vmid '$vmid' in pool '$pool'\n";
723 next;
724 }
725 $vmid = int($vmid);
726
727 if ($cfg->{vms}->{$vmid}) {
728 warn "user config - ignore duplicate vmid '$vmid' in pool '$pool'\n";
729 next;
730 }
731
732 $cfg->{pools}->{$pool}->{vms}->{$vmid} = 1;
733
734 # record vmid ==> pool relation
735 $cfg->{vms}->{$vmid} = $pool;
736 }
737
738 foreach my $storeid (split_list($storelist)) {
739 if ($storeid !~ m/^[a-z][a-z0-9\-\_\.]*[a-z0-9]$/i) {
740 warn "user config - ignore invalid storage '$storeid' in pool '$pool'\n";
741 next;
742 }
743 $cfg->{pools}->{$pool}->{storage}->{$storeid} = 1;
744 }
745 } else {
746 warn "user config - ignore config line: $line\n";
747 }
748 }
749
750 userconfig_force_defaults($cfg);
751
752 return $cfg;
753 }
754
755 sub write_user_config {
756 my ($filename, $cfg) = @_;
757
758 my $data = '';
759
760 foreach my $user (keys %{$cfg->{users}}) {
761 my $d = $cfg->{users}->{$user};
762 my $firstname = $d->{firstname} ? PVE::Tools::encode_text($d->{firstname}) : '';
763 my $lastname = $d->{lastname} ? PVE::Tools::encode_text($d->{lastname}) : '';
764 my $email = $d->{email} || '';
765 my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : '';
766 my $expire = int($d->{expire} || 0);
767 my $enable = $d->{enable} ? 1 : 0;
768 $data .= "user:$user:$enable:$expire:$firstname:$lastname:$email:$comment:\n";
769 }
770
771 $data .= "\n";
772
773 foreach my $group (keys %{$cfg->{groups}}) {
774 my $d = $cfg->{groups}->{$group};
775 my $list = join (',', keys %{$d->{users}});
776 my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : '';
777 $data .= "group:$group:$list:$comment:\n";
778 }
779
780 $data .= "\n";
781
782 foreach my $pool (keys %{$cfg->{pools}}) {
783 my $d = $cfg->{pools}->{$pool};
784 my $vmlist = join (',', keys %{$d->{vms}});
785 my $storelist = join (',', keys %{$d->{storage}});
786 my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : '';
787 $data .= "pool:$pool:$comment:$vmlist:$storelist:\n";
788 }
789
790 $data .= "\n";
791
792 foreach my $role (keys %{$cfg->{roles}}) {
793 next if $special_roles->{$role};
794
795 my $d = $cfg->{roles}->{$role};
796 my $list = join (',', keys %$d);
797 $data .= "role:$role:$list:\n";
798 }
799
800 $data .= "\n";
801
802 foreach my $path (sort keys %{$cfg->{acl}}) {
803 my $d = $cfg->{acl}->{$path};
804
805 my $ra = {};
806
807 foreach my $group (keys %{$d->{groups}}) {
808 my $l0 = '';
809 my $l1 = '';
810 foreach my $role (sort keys %{$d->{groups}->{$group}}) {
811 my $propagate = $d->{groups}->{$group}->{$role};
812 if ($propagate) {
813 $l1 .= ',' if $l1;
814 $l1 .= $role;
815 } else {
816 $l0 .= ',' if $l0;
817 $l0 .= $role;
818 }
819 }
820 $ra->{0}->{$l0}->{"\@$group"} = 1 if $l0;
821 $ra->{1}->{$l1}->{"\@$group"} = 1 if $l1;
822 }
823
824 foreach my $user (keys %{$d->{users}}) {
825 # no need to save, because root is always 'Administartor'
826 next if $user eq 'root@pam';
827
828 my $l0 = '';
829 my $l1 = '';
830 foreach my $role (sort keys %{$d->{users}->{$user}}) {
831 my $propagate = $d->{users}->{$user}->{$role};
832 if ($propagate) {
833 $l1 .= ',' if $l1;
834 $l1 .= $role;
835 } else {
836 $l0 .= ',' if $l0;
837 $l0 .= $role;
838 }
839 }
840 $ra->{0}->{$l0}->{$user} = 1 if $l0;
841 $ra->{1}->{$l1}->{$user} = 1 if $l1;
842 }
843
844 foreach my $rolelist (sort keys %{$ra->{0}}) {
845 my $uglist = join (',', keys %{$ra->{0}->{$rolelist}});
846 $data .= "acl:0:$path:$uglist:$rolelist:\n";
847 }
848 foreach my $rolelist (sort keys %{$ra->{1}}) {
849 my $uglist = join (',', keys %{$ra->{1}->{$rolelist}});
850 $data .= "acl:1:$path:$uglist:$rolelist:\n";
851 }
852 }
853
854 return $data;
855 }
856
857 sub roles {
858 my ($cfg, $user, $path) = @_;
859
860 # NOTE: we do not consider pools here.
861 # You need to use $rpcenv->roles() instead if you want that.
862
863 return 'Administrator' if $user eq 'root@pam'; # root can do anything
864
865 my $perm = {};
866
867 foreach my $p (sort keys %{$cfg->{acl}}) {
868 my $final = ($path eq $p);
869
870 next if !(($p eq '/') || $final || ($path =~ m|^$p/|));
871
872 my $acl = $cfg->{acl}->{$p};
873
874 #print "CHECKACL $path $p\n";
875 #print "ACL $path = " . Dumper ($acl);
876
877 if (my $ri = $acl->{users}->{$user}) {
878 my $new;
879 foreach my $role (keys %$ri) {
880 my $propagate = $ri->{$role};
881 if ($final || $propagate) {
882 #print "APPLY ROLE $p $user $role\n";
883 $new = {} if !$new;
884 $new->{$role} = 1;
885 }
886 }
887 if ($new) {
888 $perm = $new; # overwrite previous settings
889 next; # user privs always override group privs
890 }
891 }
892
893 my $new;
894 foreach my $g (keys %{$acl->{groups}}) {
895 next if !$cfg->{groups}->{$g}->{users}->{$user};
896 if (my $ri = $acl->{groups}->{$g}) {
897 foreach my $role (keys %$ri) {
898 my $propagate = $ri->{$role};
899 if ($final || $propagate) {
900 #print "APPLY ROLE $p \@$g $role\n";
901 $new = {} if !$new;
902 $new->{$role} = 1;
903 }
904 }
905 }
906 }
907 if ($new) {
908 $perm = $new; # overwrite previous settings
909 next;
910 }
911 }
912
913 return ('NoAccess') if defined ($perm->{NoAccess});
914 #return () if defined ($perm->{NoAccess});
915
916 #print "permission $user $path = " . Dumper ($perm);
917
918 my @ra = keys %$perm;
919
920 #print "roles $user $path = " . join (',', @ra) . "\n";
921
922 return @ra;
923 }
924
925 sub permission {
926 my ($cfg, $user, $path) = @_;
927
928 $user = PVE::Auth::Plugin::verify_username($user, 1);
929 return {} if !$user;
930
931 my @ra = roles($cfg, $user, $path);
932
933 my $privs = {};
934
935 foreach my $role (@ra) {
936 if (my $privset = $cfg->{roles}->{$role}) {
937 foreach my $p (keys %$privset) {
938 $privs->{$p} = 1;
939 }
940 }
941 }
942
943 #print "priviledges $user $path = " . Dumper ($privs);
944
945 return $privs;
946 }
947
948 sub check_permissions {
949 my ($username, $path, $privlist) = @_;
950
951 $path = normalize_path($path);
952 my $usercfg = cfs_read_file('user.cfg');
953 my $perm = permission($usercfg, $username, $path);
954
955 foreach my $priv (split_list($privlist)) {
956 return undef if !$perm->{$priv};
957 };
958
959 return 1;
960 }
961
962 1;