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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.Migrate', | |
368 | 'VM.Monitor', | |
369 | 'VM.Snapshot', | |
370 | ], | |
371 | user => [ | |
372 | 'VM.Config.CDROM', # change CDROM media | |
373 | 'VM.Console', | |
374 | 'VM.Backup', | |
375 | 'VM.PowerMgmt', | |
376 | ], | |
377 | audit => [ | |
378 | 'VM.Audit', | |
379 | ], | |
380 | }, | |
381 | Sys => { | |
382 | root => [ | |
383 | 'Sys.PowerMgmt', | |
384 | 'Sys.Modify', # edit/change node settings | |
385 | ], | |
386 | admin => [ | |
387 | 'Permissions.Modify', | |
388 | 'Sys.Console', | |
389 | 'Sys.Syslog', | |
390 | ], | |
391 | user => [], | |
392 | audit => [ | |
393 | 'Sys.Audit', | |
394 | ], | |
395 | }, | |
396 | Datastore => { | |
397 | root => [], | |
398 | admin => [ | |
399 | 'Datastore.Allocate', | |
400 | 'Datastore.AllocateTemplate', | |
401 | ], | |
402 | user => [ | |
403 | 'Datastore.AllocateSpace', | |
404 | ], | |
405 | audit => [ | |
406 | 'Datastore.Audit', | |
407 | ], | |
408 | }, | |
409 | User => { | |
410 | root => [ | |
411 | 'Realm.Allocate', | |
412 | ], | |
413 | admin => [ | |
414 | 'User.Modify', | |
415 | 'Group.Allocate', # edit/change group settings | |
416 | 'Realm.AllocateUser', | |
417 | ], | |
418 | user => [], | |
419 | audit => [], | |
420 | }, | |
421 | Pool => { | |
422 | root => [], | |
423 | admin => [ | |
424 | 'Pool.Allocate', # create/delete pools | |
425 | ], | |
426 | user => [], | |
427 | audit => [], | |
428 | }, | |
429 | }; | |
430 | ||
431 | my $valid_privs = {}; | |
432 | ||
433 | my $special_roles = { | |
434 | 'NoAccess' => {}, # no priviledges | |
435 | 'Administrator' => $valid_privs, # all priviledges | |
436 | }; | |
437 | ||
438 | sub create_roles { | |
439 | ||
440 | foreach my $cat (keys %$privgroups) { | |
441 | my $cd = $privgroups->{$cat}; | |
442 | foreach my $p (@{$cd->{root}}, @{$cd->{admin}}, | |
443 | @{$cd->{user}}, @{$cd->{audit}}) { | |
444 | $valid_privs->{$p} = 1; | |
445 | } | |
446 | foreach my $p (@{$cd->{admin}}, @{$cd->{user}}, @{$cd->{audit}}) { | |
447 | ||
448 | $special_roles->{"PVE${cat}Admin"}->{$p} = 1; | |
449 | $special_roles->{"PVEAdmin"}->{$p} = 1; | |
450 | } | |
451 | if (scalar(@{$cd->{user}})) { | |
452 | foreach my $p (@{$cd->{user}}, @{$cd->{audit}}) { | |
453 | $special_roles->{"PVE${cat}User"}->{$p} = 1; | |
454 | } | |
455 | } | |
456 | foreach my $p (@{$cd->{audit}}) { | |
457 | $special_roles->{"PVEAuditor"}->{$p} = 1; | |
458 | } | |
459 | } | |
460 | }; | |
461 | ||
462 | create_roles(); | |
463 | ||
464 | sub add_role_privs { | |
465 | my ($role, $usercfg, $privs) = @_; | |
466 | ||
467 | return if !$privs; | |
468 | ||
469 | die "role '$role' does not exist\n" if !$usercfg->{roles}->{$role}; | |
470 | ||
471 | foreach my $priv (split_list($privs)) { | |
472 | if (defined ($valid_privs->{$priv})) { | |
473 | $usercfg->{roles}->{$role}->{$priv} = 1; | |
474 | } else { | |
475 | die "invalid priviledge '$priv'\n"; | |
476 | } | |
477 | } | |
478 | } | |
479 | ||
480 | sub normalize_path { | |
481 | my $path = shift; | |
482 | ||
483 | $path =~ s|/+|/|g; | |
484 | ||
485 | $path =~ s|/$||; | |
486 | ||
487 | $path = '/' if !$path; | |
488 | ||
489 | $path = "/$path" if $path !~ m|^/|; | |
490 | ||
491 | return undef if $path !~ m|^[[:alnum:]\-\_\/]+$|; | |
492 | ||
493 | return $path; | |
494 | } | |
495 | ||
496 | ||
497 | PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname); | |
498 | sub verify_groupname { | |
499 | my ($groupname, $noerr) = @_; | |
500 | ||
501 | if ($groupname !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
502 | ||
503 | die "group name '$groupname' contains invalid characters\n" if !$noerr; | |
504 | ||
505 | return undef; | |
506 | } | |
507 | ||
508 | return $groupname; | |
509 | } | |
510 | ||
511 | PVE::JSONSchema::register_format('pve-roleid', \&verify_rolename); | |
512 | sub verify_rolename { | |
513 | my ($rolename, $noerr) = @_; | |
514 | ||
515 | if ($rolename !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
516 | ||
517 | die "role name '$rolename' contains invalid characters\n" if !$noerr; | |
518 | ||
519 | return undef; | |
520 | } | |
521 | ||
522 | return $rolename; | |
523 | } | |
524 | ||
525 | PVE::JSONSchema::register_format('pve-poolid', \&verify_groupname); | |
526 | sub verify_poolname { | |
527 | my ($poolname, $noerr) = @_; | |
528 | ||
529 | if ($poolname !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
530 | ||
531 | die "pool name '$poolname' contains invalid characters\n" if !$noerr; | |
532 | ||
533 | return undef; | |
534 | } | |
535 | ||
536 | return $poolname; | |
537 | } | |
538 | ||
539 | PVE::JSONSchema::register_format('pve-priv', \&verify_privname); | |
540 | sub verify_privname { | |
541 | my ($priv, $noerr) = @_; | |
542 | ||
543 | if (!$valid_privs->{$priv}) { | |
544 | die "invalid priviledge '$priv'\n" if !$noerr; | |
545 | ||
546 | return undef; | |
547 | } | |
548 | ||
549 | return $priv; | |
550 | } | |
551 | ||
552 | sub userconfig_force_defaults { | |
553 | my ($cfg) = @_; | |
554 | ||
555 | foreach my $r (keys %$special_roles) { | |
556 | $cfg->{roles}->{$r} = $special_roles->{$r}; | |
557 | } | |
558 | ||
559 | # fixme: remove 'root' group (not required)? | |
560 | ||
561 | # add root user | |
562 | $cfg->{users}->{'root@pam'}->{enable} = 1; | |
563 | } | |
564 | ||
565 | sub parse_user_config { | |
566 | my ($filename, $raw) = @_; | |
567 | ||
568 | my $cfg = {}; | |
569 | ||
570 | userconfig_force_defaults($cfg); | |
571 | ||
572 | while ($raw && $raw =~ s/^(.*?)(\n|$)//) { | |
573 | my $line = $1; | |
574 | ||
575 | next if $line =~ m/^\s*$/; # skip empty lines | |
576 | ||
577 | my @data; | |
578 | ||
579 | foreach my $d (split (/:/, $line)) { | |
580 | $d =~ s/^\s+//; | |
581 | $d =~ s/\s+$//; | |
582 | push @data, $d | |
583 | } | |
584 | ||
585 | my $et = shift @data; | |
586 | ||
587 | if ($et eq 'user') { | |
588 | my ($user, $enable, $expire, $firstname, $lastname, $email, $comment) = @data; | |
589 | ||
590 | my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1); | |
591 | if (!$realm) { | |
592 | warn "user config - ignore user '$user' - invalid user name\n"; | |
593 | next; | |
594 | } | |
595 | ||
596 | $enable = $enable ? 1 : 0; | |
597 | ||
598 | $expire = 0 if !$expire; | |
599 | ||
600 | if ($expire !~ m/^\d+$/) { | |
601 | warn "user config - ignore user '$user' - (illegal characters in expire '$expire')\n"; | |
602 | next; | |
603 | } | |
604 | $expire = int($expire); | |
605 | ||
606 | #if (!verify_groupname ($group, 1)) { | |
607 | # warn "user config - ignore user '$user' - invalid characters in group name\n"; | |
608 | # next; | |
609 | #} | |
610 | ||
611 | $cfg->{users}->{$user} = { | |
612 | enable => $enable, | |
613 | # group => $group, | |
614 | }; | |
615 | $cfg->{users}->{$user}->{firstname} = PVE::Tools::decode_text($firstname) if $firstname; | |
616 | $cfg->{users}->{$user}->{lastname} = PVE::Tools::decode_text($lastname) if $lastname; | |
617 | $cfg->{users}->{$user}->{email} = $email; | |
618 | $cfg->{users}->{$user}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
619 | $cfg->{users}->{$user}->{expire} = $expire; | |
620 | ||
621 | #$cfg->{users}->{$user}->{groups}->{$group} = 1; | |
622 | #$cfg->{groups}->{$group}->{$user} = 1; | |
623 | ||
624 | } elsif ($et eq 'group') { | |
625 | my ($group, $userlist, $comment) = @data; | |
626 | ||
627 | if (!verify_groupname($group, 1)) { | |
628 | warn "user config - ignore group '$group' - invalid characters in group name\n"; | |
629 | next; | |
630 | } | |
631 | ||
632 | # make sure to add the group (even if there are no members) | |
633 | $cfg->{groups}->{$group} = { users => {} } if !$cfg->{groups}->{$group}; | |
634 | ||
635 | $cfg->{groups}->{$group}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
636 | ||
637 | foreach my $user (split_list($userlist)) { | |
638 | ||
639 | if (!PVE::Auth::Plugin::verify_username($user, 1)) { | |
640 | warn "user config - ignore invalid group member '$user'\n"; | |
641 | next; | |
642 | } | |
643 | ||
644 | if ($cfg->{users}->{$user}) { # user exists | |
645 | $cfg->{users}->{$user}->{groups}->{$group} = 1; | |
646 | $cfg->{groups}->{$group}->{users}->{$user} = 1; | |
647 | } else { | |
648 | warn "user config - ignore invalid group member '$user'\n"; | |
649 | } | |
650 | } | |
651 | ||
652 | } elsif ($et eq 'role') { | |
653 | my ($role, $privlist) = @data; | |
654 | ||
655 | if (!verify_rolename($role, 1)) { | |
656 | warn "user config - ignore role '$role' - invalid characters in role name\n"; | |
657 | next; | |
658 | } | |
659 | ||
660 | # make sure to add the role (even if there are no privileges) | |
661 | $cfg->{roles}->{$role} = {} if !$cfg->{roles}->{$role}; | |
662 | ||
663 | foreach my $priv (split_list($privlist)) { | |
664 | if (defined ($valid_privs->{$priv})) { | |
665 | $cfg->{roles}->{$role}->{$priv} = 1; | |
666 | } else { | |
667 | warn "user config - ignore invalid priviledge '$priv'\n"; | |
668 | } | |
669 | } | |
670 | ||
671 | } elsif ($et eq 'acl') { | |
672 | my ($propagate, $pathtxt, $uglist, $rolelist) = @data; | |
673 | ||
674 | if (my $path = normalize_path($pathtxt)) { | |
675 | foreach my $role (split_list($rolelist)) { | |
676 | ||
677 | if (!verify_rolename($role, 1)) { | |
678 | warn "user config - ignore invalid role name '$role' in acl\n"; | |
679 | next; | |
680 | } | |
681 | ||
682 | foreach my $ug (split_list($uglist)) { | |
683 | if ($ug =~ m/^@(\S+)$/) { | |
684 | my $group = $1; | |
685 | if ($cfg->{groups}->{$group}) { # group exists | |
686 | $cfg->{acl}->{$path}->{groups}->{$group}->{$role} = $propagate; | |
687 | } else { | |
688 | warn "user config - ignore invalid acl group '$group'\n"; | |
689 | } | |
690 | } elsif (PVE::Auth::Plugin::verify_username($ug, 1)) { | |
691 | if ($cfg->{users}->{$ug}) { # user exists | |
692 | $cfg->{acl}->{$path}->{users}->{$ug}->{$role} = $propagate; | |
693 | } else { | |
694 | warn "user config - ignore invalid acl member '$ug'\n"; | |
695 | } | |
696 | } else { | |
697 | warn "user config - invalid user/group '$ug' in acl\n"; | |
698 | } | |
699 | } | |
700 | } | |
701 | } else { | |
702 | warn "user config - ignore invalid path in acl '$pathtxt'\n"; | |
703 | } | |
704 | } elsif ($et eq 'pool') { | |
705 | my ($pool, $comment, $vmlist, $storelist) = @data; | |
706 | ||
707 | if (!verify_poolname($pool, 1)) { | |
708 | warn "user config - ignore pool '$pool' - invalid characters in pool name\n"; | |
709 | next; | |
710 | } | |
711 | ||
712 | # make sure to add the pool (even if there are no members) | |
713 | $cfg->{pools}->{$pool} = { vms => {}, storage => {} } if !$cfg->{pools}->{$pool}; | |
714 | ||
715 | $cfg->{pools}->{$pool}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
716 | ||
717 | foreach my $vmid (split_list($vmlist)) { | |
718 | if ($vmid !~ m/^\d+$/) { | |
719 | warn "user config - ignore invalid vmid '$vmid' in pool '$pool'\n"; | |
720 | next; | |
721 | } | |
722 | $vmid = int($vmid); | |
723 | ||
724 | if ($cfg->{vms}->{$vmid}) { | |
725 | warn "user config - ignore duplicate vmid '$vmid' in pool '$pool'\n"; | |
726 | next; | |
727 | } | |
728 | ||
729 | $cfg->{pools}->{$pool}->{vms}->{$vmid} = 1; | |
730 | ||
731 | # record vmid ==> pool relation | |
732 | $cfg->{vms}->{$vmid} = $pool; | |
733 | } | |
734 | ||
735 | foreach my $storeid (split_list($storelist)) { | |
736 | if ($storeid !~ m/^[a-z][a-z0-9\-\_\.]*[a-z0-9]$/i) { | |
737 | warn "user config - ignore invalid storage '$storeid' in pool '$pool'\n"; | |
738 | next; | |
739 | } | |
740 | $cfg->{pools}->{$pool}->{storage}->{$storeid} = 1; | |
741 | } | |
742 | } else { | |
743 | warn "user config - ignore config line: $line\n"; | |
744 | } | |
745 | } | |
746 | ||
747 | userconfig_force_defaults($cfg); | |
748 | ||
749 | return $cfg; | |
750 | } | |
751 | ||
752 | sub write_user_config { | |
753 | my ($filename, $cfg) = @_; | |
754 | ||
755 | my $data = ''; | |
756 | ||
757 | foreach my $user (keys %{$cfg->{users}}) { | |
758 | my $d = $cfg->{users}->{$user}; | |
759 | my $firstname = $d->{firstname} ? PVE::Tools::encode_text($d->{firstname}) : ''; | |
760 | my $lastname = $d->{lastname} ? PVE::Tools::encode_text($d->{lastname}) : ''; | |
761 | my $email = $d->{email} || ''; | |
762 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
763 | my $expire = int($d->{expire} || 0); | |
764 | my $enable = $d->{enable} ? 1 : 0; | |
765 | $data .= "user:$user:$enable:$expire:$firstname:$lastname:$email:$comment:\n"; | |
766 | } | |
767 | ||
768 | $data .= "\n"; | |
769 | ||
770 | foreach my $group (keys %{$cfg->{groups}}) { | |
771 | my $d = $cfg->{groups}->{$group}; | |
772 | my $list = join (',', keys %{$d->{users}}); | |
773 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
774 | $data .= "group:$group:$list:$comment:\n"; | |
775 | } | |
776 | ||
777 | $data .= "\n"; | |
778 | ||
779 | foreach my $pool (keys %{$cfg->{pools}}) { | |
780 | my $d = $cfg->{pools}->{$pool}; | |
781 | my $vmlist = join (',', keys %{$d->{vms}}); | |
782 | my $storelist = join (',', keys %{$d->{storage}}); | |
783 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
784 | $data .= "pool:$pool:$comment:$vmlist:$storelist:\n"; | |
785 | } | |
786 | ||
787 | $data .= "\n"; | |
788 | ||
789 | foreach my $role (keys %{$cfg->{roles}}) { | |
790 | next if $special_roles->{$role}; | |
791 | ||
792 | my $d = $cfg->{roles}->{$role}; | |
793 | my $list = join (',', keys %$d); | |
794 | $data .= "role:$role:$list:\n"; | |
795 | } | |
796 | ||
797 | $data .= "\n"; | |
798 | ||
799 | foreach my $path (sort keys %{$cfg->{acl}}) { | |
800 | my $d = $cfg->{acl}->{$path}; | |
801 | ||
802 | my $ra = {}; | |
803 | ||
804 | foreach my $group (keys %{$d->{groups}}) { | |
805 | my $l0 = ''; | |
806 | my $l1 = ''; | |
807 | foreach my $role (sort keys %{$d->{groups}->{$group}}) { | |
808 | my $propagate = $d->{groups}->{$group}->{$role}; | |
809 | if ($propagate) { | |
810 | $l1 .= ',' if $l1; | |
811 | $l1 .= $role; | |
812 | } else { | |
813 | $l0 .= ',' if $l0; | |
814 | $l0 .= $role; | |
815 | } | |
816 | } | |
817 | $ra->{0}->{$l0}->{"\@$group"} = 1 if $l0; | |
818 | $ra->{1}->{$l1}->{"\@$group"} = 1 if $l1; | |
819 | } | |
820 | ||
821 | foreach my $user (keys %{$d->{users}}) { | |
822 | # no need to save, because root is always 'Administartor' | |
823 | next if $user eq 'root@pam'; | |
824 | ||
825 | my $l0 = ''; | |
826 | my $l1 = ''; | |
827 | foreach my $role (sort keys %{$d->{users}->{$user}}) { | |
828 | my $propagate = $d->{users}->{$user}->{$role}; | |
829 | if ($propagate) { | |
830 | $l1 .= ',' if $l1; | |
831 | $l1 .= $role; | |
832 | } else { | |
833 | $l0 .= ',' if $l0; | |
834 | $l0 .= $role; | |
835 | } | |
836 | } | |
837 | $ra->{0}->{$l0}->{$user} = 1 if $l0; | |
838 | $ra->{1}->{$l1}->{$user} = 1 if $l1; | |
839 | } | |
840 | ||
841 | foreach my $rolelist (sort keys %{$ra->{0}}) { | |
842 | my $uglist = join (',', keys %{$ra->{0}->{$rolelist}}); | |
843 | $data .= "acl:0:$path:$uglist:$rolelist:\n"; | |
844 | } | |
845 | foreach my $rolelist (sort keys %{$ra->{1}}) { | |
846 | my $uglist = join (',', keys %{$ra->{1}->{$rolelist}}); | |
847 | $data .= "acl:1:$path:$uglist:$rolelist:\n"; | |
848 | } | |
849 | } | |
850 | ||
851 | return $data; | |
852 | } | |
853 | ||
854 | sub roles { | |
855 | my ($cfg, $user, $path) = @_; | |
856 | ||
857 | # NOTE: we do not consider pools here. | |
858 | # You need to use $rpcenv->roles() instead if you want that. | |
859 | ||
860 | return 'Administrator' if $user eq 'root@pam'; # root can do anything | |
861 | ||
862 | my $perm = {}; | |
863 | ||
864 | foreach my $p (sort keys %{$cfg->{acl}}) { | |
865 | my $final = ($path eq $p); | |
866 | ||
867 | next if !(($p eq '/') || $final || ($path =~ m|^$p/|)); | |
868 | ||
869 | my $acl = $cfg->{acl}->{$p}; | |
870 | ||
871 | #print "CHECKACL $path $p\n"; | |
872 | #print "ACL $path = " . Dumper ($acl); | |
873 | ||
874 | if (my $ri = $acl->{users}->{$user}) { | |
875 | my $new; | |
876 | foreach my $role (keys %$ri) { | |
877 | my $propagate = $ri->{$role}; | |
878 | if ($final || $propagate) { | |
879 | #print "APPLY ROLE $p $user $role\n"; | |
880 | $new = {} if !$new; | |
881 | $new->{$role} = 1; | |
882 | } | |
883 | } | |
884 | if ($new) { | |
885 | $perm = $new; # overwrite previous settings | |
886 | next; # user privs always override group privs | |
887 | } | |
888 | } | |
889 | ||
890 | my $new; | |
891 | foreach my $g (keys %{$acl->{groups}}) { | |
892 | next if !$cfg->{groups}->{$g}->{users}->{$user}; | |
893 | if (my $ri = $acl->{groups}->{$g}) { | |
894 | foreach my $role (keys %$ri) { | |
895 | my $propagate = $ri->{$role}; | |
896 | if ($final || $propagate) { | |
897 | #print "APPLY ROLE $p \@$g $role\n"; | |
898 | $new = {} if !$new; | |
899 | $new->{$role} = 1; | |
900 | } | |
901 | } | |
902 | } | |
903 | } | |
904 | if ($new) { | |
905 | $perm = $new; # overwrite previous settings | |
906 | next; | |
907 | } | |
908 | } | |
909 | ||
910 | return ('NoAccess') if defined ($perm->{NoAccess}); | |
911 | #return () if defined ($perm->{NoAccess}); | |
912 | ||
913 | #print "permission $user $path = " . Dumper ($perm); | |
914 | ||
915 | my @ra = keys %$perm; | |
916 | ||
917 | #print "roles $user $path = " . join (',', @ra) . "\n"; | |
918 | ||
919 | return @ra; | |
920 | } | |
921 | ||
922 | sub permission { | |
923 | my ($cfg, $user, $path) = @_; | |
924 | ||
925 | $user = PVE::Auth::Plugin::verify_username($user, 1); | |
926 | return {} if !$user; | |
927 | ||
928 | my @ra = roles($cfg, $user, $path); | |
929 | ||
930 | my $privs = {}; | |
931 | ||
932 | foreach my $role (@ra) { | |
933 | if (my $privset = $cfg->{roles}->{$role}) { | |
934 | foreach my $p (keys %$privset) { | |
935 | $privs->{$p} = 1; | |
936 | } | |
937 | } | |
938 | } | |
939 | ||
940 | #print "priviledges $user $path = " . Dumper ($privs); | |
941 | ||
942 | return $privs; | |
943 | } | |
944 | ||
945 | sub check_permissions { | |
946 | my ($username, $path, $privlist) = @_; | |
947 | ||
948 | $path = normalize_path($path); | |
949 | my $usercfg = cfs_read_file('user.cfg'); | |
950 | my $perm = permission($usercfg, $username, $path); | |
951 | ||
952 | foreach my $priv (split_list($privlist)) { | |
953 | return undef if !$perm->{$priv}; | |
954 | }; | |
955 | ||
956 | return 1; | |
957 | } | |
958 | ||
959 | 1; |