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1 | package PVE::AccessControl; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use Encode; | |
6 | use Crypt::OpenSSL::Random; | |
7 | use Crypt::OpenSSL::RSA; | |
8 | use Net::SSLeay; | |
9 | use Net::IP; | |
10 | use MIME::Base64; | |
11 | use Digest::SHA; | |
12 | use IO::File; | |
13 | use File::stat; | |
14 | use JSON; | |
15 | ||
16 | use PVE::OTP; | |
17 | use PVE::Ticket; | |
18 | use PVE::Tools qw(run_command lock_file file_get_contents split_list safe_print); | |
19 | use PVE::Cluster qw(cfs_register_file cfs_read_file cfs_write_file cfs_lock_file); | |
20 | use PVE::JSONSchema qw(register_standard_option get_standard_option); | |
21 | ||
22 | use PVE::Auth::Plugin; | |
23 | use PVE::Auth::AD; | |
24 | use PVE::Auth::LDAP; | |
25 | use PVE::Auth::PVE; | |
26 | use PVE::Auth::PAM; | |
27 | ||
28 | # load and initialize all plugins | |
29 | ||
30 | PVE::Auth::AD->register(); | |
31 | PVE::Auth::LDAP->register(); | |
32 | PVE::Auth::PVE->register(); | |
33 | PVE::Auth::PAM->register(); | |
34 | PVE::Auth::Plugin->init(); | |
35 | ||
36 | # $authdir must be writable by root only! | |
37 | my $confdir = "/etc/pve"; | |
38 | my $authdir = "$confdir/priv"; | |
39 | ||
40 | my $pve_www_key_fn = "$confdir/pve-www.key"; | |
41 | ||
42 | my $pve_auth_key_files = { | |
43 | priv => "$authdir/authkey.key", | |
44 | pub => "$confdir/authkey.pub", | |
45 | pubold => "$confdir/authkey.pub.old", | |
46 | }; | |
47 | ||
48 | my $pve_auth_key_cache = {}; | |
49 | ||
50 | my $ticket_lifetime = 3600 * 2; # 2 hours | |
51 | my $authkey_lifetime = 3600 * 24; # rotate every 24 hours | |
52 | ||
53 | Crypt::OpenSSL::RSA->import_random_seed(); | |
54 | ||
55 | cfs_register_file('user.cfg', | |
56 | \&parse_user_config, | |
57 | \&write_user_config); | |
58 | cfs_register_file('priv/tfa.cfg', | |
59 | \&parse_priv_tfa_config, | |
60 | \&write_priv_tfa_config); | |
61 | ||
62 | sub verify_username { | |
63 | PVE::Auth::Plugin::verify_username(@_); | |
64 | } | |
65 | ||
66 | sub pve_verify_realm { | |
67 | PVE::Auth::Plugin::pve_verify_realm(@_); | |
68 | } | |
69 | ||
70 | sub lock_user_config { | |
71 | my ($code, $errmsg) = @_; | |
72 | ||
73 | cfs_lock_file("user.cfg", undef, $code); | |
74 | if (my $err = $@) { | |
75 | $errmsg ? die "$errmsg: $err" : die $err; | |
76 | } | |
77 | } | |
78 | ||
79 | my $cache_read_key = sub { | |
80 | my ($type) = @_; | |
81 | ||
82 | my $path = $pve_auth_key_files->{$type}; | |
83 | ||
84 | my $read_key_and_mtime = sub { | |
85 | my $fh = IO::File->new($path, "r"); | |
86 | ||
87 | return undef if !defined($fh); | |
88 | ||
89 | my $st = stat($fh); | |
90 | my $pem = PVE::Tools::safe_read_from($fh, 0, 0, $path); | |
91 | ||
92 | close $fh; | |
93 | ||
94 | my $key; | |
95 | if ($type eq 'pub' || $type eq 'pubold') { | |
96 | $key = eval { Crypt::OpenSSL::RSA->new_public_key($pem); }; | |
97 | } elsif ($type eq 'priv') { | |
98 | $key = eval { Crypt::OpenSSL::RSA->new_private_key($pem); }; | |
99 | } else { | |
100 | die "Invalid authkey type '$type'\n"; | |
101 | } | |
102 | ||
103 | return { key => $key, mtime => $st->mtime }; | |
104 | }; | |
105 | ||
106 | if (!defined($pve_auth_key_cache->{$type})) { | |
107 | $pve_auth_key_cache->{$type} = $read_key_and_mtime->(); | |
108 | } else { | |
109 | my $st = stat($path); | |
110 | if (!$st || $st->mtime != $pve_auth_key_cache->{$type}->{mtime}) { | |
111 | $pve_auth_key_cache->{$type} = $read_key_and_mtime->(); | |
112 | } | |
113 | } | |
114 | ||
115 | return $pve_auth_key_cache->{$type}; | |
116 | }; | |
117 | ||
118 | sub get_pubkey { | |
119 | my ($old) = @_; | |
120 | ||
121 | my $type = $old ? 'pubold' : 'pub'; | |
122 | ||
123 | my $res = $cache_read_key->($type); | |
124 | return undef if !defined($res); | |
125 | ||
126 | return wantarray ? ($res->{key}, $res->{mtime}) : $res->{key}; | |
127 | } | |
128 | ||
129 | sub get_privkey { | |
130 | my $res = $cache_read_key->('priv'); | |
131 | ||
132 | if (!defined($res) || !check_authkey(1)) { | |
133 | rotate_authkey(); | |
134 | $res = $cache_read_key->('priv'); | |
135 | } | |
136 | ||
137 | return wantarray ? ($res->{key}, $res->{mtime}) : $res->{key}; | |
138 | } | |
139 | ||
140 | sub check_authkey { | |
141 | my ($quiet) = @_; | |
142 | ||
143 | # skip check if non-quorate, as rotation is not possible anyway | |
144 | return 1 if !PVE::Cluster::check_cfs_quorum(1); | |
145 | ||
146 | my ($pub_key, $mtime) = get_pubkey(); | |
147 | if (!$pub_key) { | |
148 | warn "auth key pair missing, generating new one..\n" if !$quiet; | |
149 | return 0; | |
150 | } else { | |
151 | if (time() - $mtime >= $authkey_lifetime) { | |
152 | warn "auth key pair too old, rotating..\n" if !$quiet;; | |
153 | return 0; | |
154 | } else { | |
155 | warn "auth key new enough, skipping rotation\n" if !$quiet;; | |
156 | return 1; | |
157 | } | |
158 | } | |
159 | } | |
160 | ||
161 | sub rotate_authkey { | |
162 | return if $authkey_lifetime == 0; | |
163 | ||
164 | PVE::Cluster::cfs_lock_authkey(undef, sub { | |
165 | # re-check with lock to avoid double rotation in clusters | |
166 | return if check_authkey(); | |
167 | ||
168 | my $old = get_pubkey(); | |
169 | my $new = Crypt::OpenSSL::RSA->generate_key(2048); | |
170 | ||
171 | if ($old) { | |
172 | eval { | |
173 | my $pem = $old->get_public_key_x509_string(); | |
174 | # mtime is used for caching and ticket age range calculation | |
175 | PVE::Tools::file_set_contents($pve_auth_key_files->{pubold}, $pem); | |
176 | }; | |
177 | die "Failed to store old auth key: $@\n" if $@; | |
178 | } | |
179 | ||
180 | eval { | |
181 | my $pem = $new->get_public_key_x509_string(); | |
182 | # mtime is used for caching and ticket age range calculation, | |
183 | # should be close to that of pubold above | |
184 | PVE::Tools::file_set_contents($pve_auth_key_files->{pub}, $pem); | |
185 | }; | |
186 | if ($@) { | |
187 | if ($old) { | |
188 | warn "Failed to store new auth key - $@\n"; | |
189 | warn "Reverting to previous auth key\n"; | |
190 | eval { | |
191 | my $pem = $old->get_public_key_x509_string(); | |
192 | PVE::Tools::file_set_contents($pve_auth_key_files->{pub}, $pem); | |
193 | }; | |
194 | die "Failed to restore old auth key: $@\n" if $@; | |
195 | } else { | |
196 | die "Failed to store new auth key - $@\n"; | |
197 | } | |
198 | } | |
199 | ||
200 | eval { | |
201 | my $pem = $new->get_private_key_string(); | |
202 | PVE::Tools::file_set_contents($pve_auth_key_files->{priv}, $pem); | |
203 | }; | |
204 | if ($@) { | |
205 | warn "Failed to store new auth key - $@\n"; | |
206 | warn "Deleting auth key to force regeneration\n"; | |
207 | unlink $pve_auth_key_files->{pub}; | |
208 | unlink $pve_auth_key_files->{priv}; | |
209 | } | |
210 | }); | |
211 | die $@ if $@; | |
212 | } | |
213 | ||
214 | my $csrf_prevention_secret; | |
215 | my $get_csrfr_secret = sub { | |
216 | if (!$csrf_prevention_secret) { | |
217 | my $input = PVE::Tools::file_get_contents($pve_www_key_fn); | |
218 | $csrf_prevention_secret = Digest::SHA::sha1_base64($input); | |
219 | } | |
220 | return $csrf_prevention_secret; | |
221 | }; | |
222 | ||
223 | sub assemble_csrf_prevention_token { | |
224 | my ($username) = @_; | |
225 | ||
226 | my $secret = &$get_csrfr_secret(); | |
227 | ||
228 | return PVE::Ticket::assemble_csrf_prevention_token ($secret, $username); | |
229 | } | |
230 | ||
231 | sub verify_csrf_prevention_token { | |
232 | my ($username, $token, $noerr) = @_; | |
233 | ||
234 | my $secret = &$get_csrfr_secret(); | |
235 | ||
236 | return PVE::Ticket::verify_csrf_prevention_token( | |
237 | $secret, $username, $token, -300, $ticket_lifetime, $noerr); | |
238 | } | |
239 | ||
240 | my $get_ticket_age_range = sub { | |
241 | my ($now, $mtime, $rotated) = @_; | |
242 | ||
243 | my $key_age = $now - $mtime; | |
244 | $key_age = 0 if $key_age < 0; | |
245 | ||
246 | my $min = -300; | |
247 | my $max = $ticket_lifetime; | |
248 | ||
249 | if ($rotated) { | |
250 | # ticket creation after rotation is not allowed | |
251 | $min = $key_age - 300; | |
252 | } else { | |
253 | if ($key_age > $authkey_lifetime && $authkey_lifetime > 0) { | |
254 | if (PVE::Cluster::check_cfs_quorum(1)) { | |
255 | # key should have been rotated, clamp range accordingly | |
256 | $min = $key_age - $authkey_lifetime; | |
257 | } else { | |
258 | warn "Cluster not quorate - extending auth key lifetime!\n"; | |
259 | } | |
260 | } | |
261 | ||
262 | $max = $key_age + 300 if $key_age < $ticket_lifetime; | |
263 | } | |
264 | ||
265 | return undef if $min > $ticket_lifetime; | |
266 | return ($min, $max); | |
267 | }; | |
268 | ||
269 | sub assemble_ticket { | |
270 | my ($data) = @_; | |
271 | ||
272 | my $rsa_priv = get_privkey(); | |
273 | ||
274 | return PVE::Ticket::assemble_rsa_ticket($rsa_priv, 'PVE', $data); | |
275 | } | |
276 | ||
277 | sub verify_ticket { | |
278 | my ($ticket, $noerr) = @_; | |
279 | ||
280 | my $now = time(); | |
281 | ||
282 | my $check = sub { | |
283 | my ($old) = @_; | |
284 | ||
285 | my ($rsa_pub, $rsa_mtime) = get_pubkey($old); | |
286 | return undef if !$rsa_pub; | |
287 | ||
288 | my ($min, $max) = $get_ticket_age_range->($now, $rsa_mtime, $old); | |
289 | return undef if !defined($min); | |
290 | ||
291 | return PVE::Ticket::verify_rsa_ticket( | |
292 | $rsa_pub, 'PVE', $ticket, undef, $min, $max, 1); | |
293 | }; | |
294 | ||
295 | my ($data, $age) = $check->(); | |
296 | ||
297 | # check with old, rotated key if current key failed | |
298 | ($data, $age) = $check->(1) if !defined($data); | |
299 | ||
300 | my $auth_failure = sub { | |
301 | if ($noerr) { | |
302 | return undef; | |
303 | } else { | |
304 | # raise error via undef ticket | |
305 | PVE::Ticket::verify_rsa_ticket(undef, 'PVE'); | |
306 | } | |
307 | }; | |
308 | ||
309 | if (!defined($data)) { | |
310 | return $auth_failure->(); | |
311 | } | |
312 | ||
313 | my ($username, $tfa_info); | |
314 | if ($data =~ m{^u2f!([^!]+)!([0-9a-zA-Z/.=_\-+]+)$}) { | |
315 | # Ticket for u2f-users: | |
316 | ($username, my $challenge) = ($1, $2); | |
317 | if ($challenge eq 'verified') { | |
318 | # u2f challenge was completed | |
319 | $challenge = undef; | |
320 | } elsif (!wantarray) { | |
321 | # The caller is not aware there could be an ongoing challenge, | |
322 | # so we treat this ticket as invalid: | |
323 | return $auth_failure->(); | |
324 | } | |
325 | $tfa_info = { | |
326 | type => 'u2f', | |
327 | challenge => $challenge, | |
328 | }; | |
329 | } elsif ($data =~ /^tfa!(.*)$/) { | |
330 | # TOTP and Yubico don't require a challenge so this is the generic | |
331 | # 'missing 2nd factor ticket' | |
332 | $username = $1; | |
333 | $tfa_info = { type => 'tfa' }; | |
334 | } else { | |
335 | # Regular ticket (full access) | |
336 | $username = $data; | |
337 | } | |
338 | ||
339 | return undef if !PVE::Auth::Plugin::verify_username($username, $noerr); | |
340 | ||
341 | return wantarray ? ($username, $age, $tfa_info) : $username; | |
342 | } | |
343 | ||
344 | # VNC tickets | |
345 | # - they do not contain the username in plain text | |
346 | # - they are restricted to a specific resource path (example: '/vms/100') | |
347 | sub assemble_vnc_ticket { | |
348 | my ($username, $path) = @_; | |
349 | ||
350 | my $rsa_priv = get_privkey(); | |
351 | ||
352 | $path = normalize_path($path); | |
353 | ||
354 | my $secret_data = "$username:$path"; | |
355 | ||
356 | return PVE::Ticket::assemble_rsa_ticket( | |
357 | $rsa_priv, 'PVEVNC', undef, $secret_data); | |
358 | } | |
359 | ||
360 | sub verify_vnc_ticket { | |
361 | my ($ticket, $username, $path, $noerr) = @_; | |
362 | ||
363 | my $secret_data = "$username:$path"; | |
364 | ||
365 | my ($rsa_pub, $rsa_mtime) = get_pubkey(); | |
366 | if (!$rsa_pub || (time() - $rsa_mtime > $authkey_lifetime && $authkey_lifetime > 0)) { | |
367 | if ($noerr) { | |
368 | return undef; | |
369 | } else { | |
370 | # raise error via undef ticket | |
371 | PVE::Ticket::verify_rsa_ticket($rsa_pub, 'PVEVNC'); | |
372 | } | |
373 | } | |
374 | ||
375 | return PVE::Ticket::verify_rsa_ticket( | |
376 | $rsa_pub, 'PVEVNC', $ticket, $secret_data, -20, 40, $noerr); | |
377 | } | |
378 | ||
379 | sub assemble_spice_ticket { | |
380 | my ($username, $vmid, $node) = @_; | |
381 | ||
382 | my $secret = &$get_csrfr_secret(); | |
383 | ||
384 | return PVE::Ticket::assemble_spice_ticket( | |
385 | $secret, $username, $vmid, $node); | |
386 | } | |
387 | ||
388 | sub verify_spice_connect_url { | |
389 | my ($connect_str) = @_; | |
390 | ||
391 | my $secret = &$get_csrfr_secret(); | |
392 | ||
393 | return PVE::Ticket::verify_spice_connect_url($secret, $connect_str); | |
394 | } | |
395 | ||
396 | sub read_x509_subject_spice { | |
397 | my ($filename) = @_; | |
398 | ||
399 | # read x509 subject | |
400 | my $bio = Net::SSLeay::BIO_new_file($filename, 'r'); | |
401 | die "Could not open $filename using OpenSSL\n" | |
402 | if !$bio; | |
403 | ||
404 | my $x509 = Net::SSLeay::PEM_read_bio_X509($bio); | |
405 | Net::SSLeay::BIO_free($bio); | |
406 | ||
407 | die "Could not parse X509 certificate in $filename\n" | |
408 | if !$x509; | |
409 | ||
410 | my $nameobj = Net::SSLeay::X509_get_subject_name($x509); | |
411 | my $subject = Net::SSLeay::X509_NAME_oneline($nameobj); | |
412 | Net::SSLeay::X509_free($x509); | |
413 | ||
414 | # remote-viewer wants comma as seperator (not '/') | |
415 | $subject =~ s!^/!!; | |
416 | $subject =~ s!/(\w+=)!,$1!g; | |
417 | ||
418 | return $subject; | |
419 | } | |
420 | ||
421 | # helper to generate SPICE remote-viewer configuration | |
422 | sub remote_viewer_config { | |
423 | my ($authuser, $vmid, $node, $proxy, $title, $port) = @_; | |
424 | ||
425 | if (!$proxy) { | |
426 | my $host = `hostname -f` || PVE::INotify::nodename(); | |
427 | chomp $host; | |
428 | $proxy = $host; | |
429 | } | |
430 | ||
431 | my ($ticket, $proxyticket) = assemble_spice_ticket($authuser, $vmid, $node); | |
432 | ||
433 | my $filename = "/etc/pve/local/pve-ssl.pem"; | |
434 | my $subject = read_x509_subject_spice($filename); | |
435 | ||
436 | my $cacert = PVE::Tools::file_get_contents("/etc/pve/pve-root-ca.pem", 8192); | |
437 | $cacert =~ s/\n/\\n/g; | |
438 | ||
439 | $proxy = "[$proxy]" if Net::IP::ip_is_ipv6($proxy); | |
440 | my $config = { | |
441 | 'secure-attention' => "Ctrl+Alt+Ins", | |
442 | 'toggle-fullscreen' => "Shift+F11", | |
443 | 'release-cursor' => "Ctrl+Alt+R", | |
444 | type => 'spice', | |
445 | title => $title, | |
446 | host => $proxyticket, # this breaks tls hostname verification, so we need to use 'host-subject' | |
447 | proxy => "http://$proxy:3128", | |
448 | 'tls-port' => $port, | |
449 | 'host-subject' => $subject, | |
450 | ca => $cacert, | |
451 | password => $ticket, | |
452 | 'delete-this-file' => 1, | |
453 | }; | |
454 | ||
455 | return ($ticket, $proxyticket, $config); | |
456 | } | |
457 | ||
458 | sub check_user_exist { | |
459 | my ($usercfg, $username, $noerr) = @_; | |
460 | ||
461 | $username = PVE::Auth::Plugin::verify_username($username, $noerr); | |
462 | return undef if !$username; | |
463 | ||
464 | return $usercfg->{users}->{$username} if $usercfg && $usercfg->{users}->{$username}; | |
465 | ||
466 | die "no such user ('$username')\n" if !$noerr; | |
467 | ||
468 | return undef; | |
469 | } | |
470 | ||
471 | sub check_user_enabled { | |
472 | my ($usercfg, $username, $noerr) = @_; | |
473 | ||
474 | my $data = check_user_exist($usercfg, $username, $noerr); | |
475 | return undef if !$data; | |
476 | ||
477 | return 1 if $data->{enable}; | |
478 | ||
479 | die "user '$username' is disabled\n" if !$noerr; | |
480 | ||
481 | return undef; | |
482 | } | |
483 | ||
484 | sub verify_one_time_pw { | |
485 | my ($type, $username, $keys, $tfa_cfg, $otp) = @_; | |
486 | ||
487 | die "missing one time password for two-factor authentication '$type'\n" if !$otp; | |
488 | ||
489 | # fixme: proxy support? | |
490 | my $proxy; | |
491 | ||
492 | if ($type eq 'yubico') { | |
493 | PVE::OTP::yubico_verify_otp($otp, $keys, $tfa_cfg->{url}, | |
494 | $tfa_cfg->{id}, $tfa_cfg->{key}, $proxy); | |
495 | } elsif ($type eq 'oath') { | |
496 | PVE::OTP::oath_verify_otp($otp, $keys, $tfa_cfg->{step}, $tfa_cfg->{digits}); | |
497 | } else { | |
498 | die "unknown tfa type '$type'\n"; | |
499 | } | |
500 | } | |
501 | ||
502 | # password should be utf8 encoded | |
503 | # Note: some plugins delay/sleep if auth fails | |
504 | sub authenticate_user { | |
505 | my ($username, $password, $otp) = @_; | |
506 | ||
507 | die "no username specified\n" if !$username; | |
508 | ||
509 | my ($ruid, $realm); | |
510 | ||
511 | ($username, $ruid, $realm) = PVE::Auth::Plugin::verify_username($username); | |
512 | ||
513 | my $usercfg = cfs_read_file('user.cfg'); | |
514 | ||
515 | check_user_enabled($usercfg, $username); | |
516 | ||
517 | my $ctime = time(); | |
518 | my $expire = $usercfg->{users}->{$username}->{expire}; | |
519 | ||
520 | die "account expired\n" if $expire && ($expire < $ctime); | |
521 | ||
522 | my $domain_cfg = cfs_read_file('domains.cfg'); | |
523 | ||
524 | my $cfg = $domain_cfg->{ids}->{$realm}; | |
525 | die "auth domain '$realm' does not exists\n" if !$cfg; | |
526 | my $plugin = PVE::Auth::Plugin->lookup($cfg->{type}); | |
527 | $plugin->authenticate_user($cfg, $realm, $ruid, $password); | |
528 | ||
529 | my ($type, $tfa_data) = user_get_tfa($username, $realm); | |
530 | if ($type) { | |
531 | if ($type eq 'u2f') { | |
532 | # Note that if the user did not manage to complete the initial u2f registration | |
533 | # challenge we have a hash containing a 'challenge' entry in the user's tfa.cfg entry: | |
534 | $tfa_data = undef if exists $tfa_data->{challenge}; | |
535 | } elsif (!defined($otp)) { | |
536 | # The user requires a 2nd factor but has not provided one. Return success but | |
537 | # don't clear $tfa_data. | |
538 | } else { | |
539 | my $keys = $tfa_data->{keys}; | |
540 | my $tfa_cfg = $tfa_data->{config}; | |
541 | verify_one_time_pw($type, $username, $keys, $tfa_cfg, $otp); | |
542 | $tfa_data = undef; | |
543 | } | |
544 | ||
545 | # Return the type along with the rest: | |
546 | if ($tfa_data) { | |
547 | $tfa_data = { | |
548 | type => $type, | |
549 | data => $tfa_data, | |
550 | }; | |
551 | } | |
552 | } | |
553 | ||
554 | return wantarray ? ($username, $tfa_data) : $username; | |
555 | } | |
556 | ||
557 | sub domain_set_password { | |
558 | my ($realm, $username, $password) = @_; | |
559 | ||
560 | die "no auth domain specified" if !$realm; | |
561 | ||
562 | my $domain_cfg = cfs_read_file('domains.cfg'); | |
563 | ||
564 | my $cfg = $domain_cfg->{ids}->{$realm}; | |
565 | die "auth domain '$realm' does not exist\n" if !$cfg; | |
566 | my $plugin = PVE::Auth::Plugin->lookup($cfg->{type}); | |
567 | $plugin->store_password($cfg, $realm, $username, $password); | |
568 | } | |
569 | ||
570 | sub add_user_group { | |
571 | my ($username, $usercfg, $group) = @_; | |
572 | ||
573 | $usercfg->{users}->{$username}->{groups}->{$group} = 1; | |
574 | $usercfg->{groups}->{$group}->{users}->{$username} = 1; | |
575 | } | |
576 | ||
577 | sub delete_user_group { | |
578 | my ($username, $usercfg) = @_; | |
579 | ||
580 | foreach my $group (keys %{$usercfg->{groups}}) { | |
581 | ||
582 | delete ($usercfg->{groups}->{$group}->{users}->{$username}) | |
583 | if $usercfg->{groups}->{$group}->{users}->{$username}; | |
584 | } | |
585 | } | |
586 | ||
587 | sub delete_user_acl { | |
588 | my ($username, $usercfg) = @_; | |
589 | ||
590 | foreach my $acl (keys %{$usercfg->{acl}}) { | |
591 | ||
592 | delete ($usercfg->{acl}->{$acl}->{users}->{$username}) | |
593 | if $usercfg->{acl}->{$acl}->{users}->{$username}; | |
594 | } | |
595 | } | |
596 | ||
597 | sub delete_group_acl { | |
598 | my ($group, $usercfg) = @_; | |
599 | ||
600 | foreach my $acl (keys %{$usercfg->{acl}}) { | |
601 | ||
602 | delete ($usercfg->{acl}->{$acl}->{groups}->{$group}) | |
603 | if $usercfg->{acl}->{$acl}->{groups}->{$group}; | |
604 | } | |
605 | } | |
606 | ||
607 | sub delete_pool_acl { | |
608 | my ($pool, $usercfg) = @_; | |
609 | ||
610 | my $path = "/pool/$pool"; | |
611 | ||
612 | delete ($usercfg->{acl}->{$path}) | |
613 | } | |
614 | ||
615 | # we automatically create some predefined roles by splitting privs | |
616 | # into 3 groups (per category) | |
617 | # root: only root is allowed to do that | |
618 | # admin: an administrator can to that | |
619 | # user: a normal user/customer can to that | |
620 | my $privgroups = { | |
621 | VM => { | |
622 | root => [], | |
623 | admin => [ | |
624 | 'VM.Config.Disk', | |
625 | 'VM.Config.CPU', | |
626 | 'VM.Config.Memory', | |
627 | 'VM.Config.Network', | |
628 | 'VM.Config.HWType', | |
629 | 'VM.Config.Options', # covers all other things | |
630 | 'VM.Allocate', | |
631 | 'VM.Clone', | |
632 | 'VM.Migrate', | |
633 | 'VM.Monitor', | |
634 | 'VM.Snapshot', | |
635 | 'VM.Snapshot.Rollback', | |
636 | ], | |
637 | user => [ | |
638 | 'VM.Config.CDROM', # change CDROM media | |
639 | 'VM.Console', | |
640 | 'VM.Backup', | |
641 | 'VM.PowerMgmt', | |
642 | ], | |
643 | audit => [ | |
644 | 'VM.Audit', | |
645 | ], | |
646 | }, | |
647 | Sys => { | |
648 | root => [ | |
649 | 'Sys.PowerMgmt', | |
650 | 'Sys.Modify', # edit/change node settings | |
651 | ], | |
652 | admin => [ | |
653 | 'Permissions.Modify', | |
654 | 'Sys.Console', | |
655 | 'Sys.Syslog', | |
656 | ], | |
657 | user => [], | |
658 | audit => [ | |
659 | 'Sys.Audit', | |
660 | ], | |
661 | }, | |
662 | Datastore => { | |
663 | root => [], | |
664 | admin => [ | |
665 | 'Datastore.Allocate', | |
666 | 'Datastore.AllocateTemplate', | |
667 | ], | |
668 | user => [ | |
669 | 'Datastore.AllocateSpace', | |
670 | ], | |
671 | audit => [ | |
672 | 'Datastore.Audit', | |
673 | ], | |
674 | }, | |
675 | User => { | |
676 | root => [ | |
677 | 'Realm.Allocate', | |
678 | ], | |
679 | admin => [ | |
680 | 'User.Modify', | |
681 | 'Group.Allocate', # edit/change group settings | |
682 | 'Realm.AllocateUser', | |
683 | ], | |
684 | user => [], | |
685 | audit => [], | |
686 | }, | |
687 | Pool => { | |
688 | root => [], | |
689 | admin => [ | |
690 | 'Pool.Allocate', # create/delete pools | |
691 | ], | |
692 | user => [], | |
693 | audit => [], | |
694 | }, | |
695 | }; | |
696 | ||
697 | my $valid_privs = {}; | |
698 | ||
699 | my $special_roles = { | |
700 | 'NoAccess' => {}, # no privileges | |
701 | 'Administrator' => $valid_privs, # all privileges | |
702 | }; | |
703 | ||
704 | sub create_roles { | |
705 | ||
706 | foreach my $cat (keys %$privgroups) { | |
707 | my $cd = $privgroups->{$cat}; | |
708 | foreach my $p (@{$cd->{root}}, @{$cd->{admin}}, | |
709 | @{$cd->{user}}, @{$cd->{audit}}) { | |
710 | $valid_privs->{$p} = 1; | |
711 | } | |
712 | foreach my $p (@{$cd->{admin}}, @{$cd->{user}}, @{$cd->{audit}}) { | |
713 | ||
714 | $special_roles->{"PVE${cat}Admin"}->{$p} = 1; | |
715 | $special_roles->{"PVEAdmin"}->{$p} = 1; | |
716 | } | |
717 | if (scalar(@{$cd->{user}})) { | |
718 | foreach my $p (@{$cd->{user}}, @{$cd->{audit}}) { | |
719 | $special_roles->{"PVE${cat}User"}->{$p} = 1; | |
720 | } | |
721 | } | |
722 | foreach my $p (@{$cd->{audit}}) { | |
723 | $special_roles->{"PVEAuditor"}->{$p} = 1; | |
724 | } | |
725 | } | |
726 | ||
727 | $special_roles->{"PVETemplateUser"} = { 'VM.Clone' => 1, 'VM.Audit' => 1 }; | |
728 | }; | |
729 | ||
730 | create_roles(); | |
731 | ||
732 | sub create_priv_properties { | |
733 | my $properties = {}; | |
734 | foreach my $priv (keys %$valid_privs) { | |
735 | $properties->{$priv} = { | |
736 | type => 'boolean', | |
737 | optional => 1, | |
738 | }; | |
739 | } | |
740 | return $properties; | |
741 | } | |
742 | ||
743 | sub role_is_special { | |
744 | my ($role) = @_; | |
745 | return (exists $special_roles->{$role}) ? 1 : 0; | |
746 | } | |
747 | ||
748 | sub add_role_privs { | |
749 | my ($role, $usercfg, $privs) = @_; | |
750 | ||
751 | return if !$privs; | |
752 | ||
753 | die "role '$role' does not exist\n" if !$usercfg->{roles}->{$role}; | |
754 | ||
755 | foreach my $priv (split_list($privs)) { | |
756 | if (defined ($valid_privs->{$priv})) { | |
757 | $usercfg->{roles}->{$role}->{$priv} = 1; | |
758 | } else { | |
759 | die "invalid privilege '$priv'\n"; | |
760 | } | |
761 | } | |
762 | } | |
763 | ||
764 | sub normalize_path { | |
765 | my $path = shift; | |
766 | ||
767 | $path =~ s|/+|/|g; | |
768 | ||
769 | $path =~ s|/$||; | |
770 | ||
771 | $path = '/' if !$path; | |
772 | ||
773 | $path = "/$path" if $path !~ m|^/|; | |
774 | ||
775 | return undef if $path !~ m|^[[:alnum:]\.\-\_\/]+$|; | |
776 | ||
777 | return $path; | |
778 | } | |
779 | ||
780 | PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname); | |
781 | sub verify_groupname { | |
782 | my ($groupname, $noerr) = @_; | |
783 | ||
784 | if ($groupname !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
785 | ||
786 | die "group name '$groupname' contains invalid characters\n" if !$noerr; | |
787 | ||
788 | return undef; | |
789 | } | |
790 | ||
791 | return $groupname; | |
792 | } | |
793 | ||
794 | PVE::JSONSchema::register_format('pve-roleid', \&verify_rolename); | |
795 | sub verify_rolename { | |
796 | my ($rolename, $noerr) = @_; | |
797 | ||
798 | if ($rolename !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
799 | ||
800 | die "role name '$rolename' contains invalid characters\n" if !$noerr; | |
801 | ||
802 | return undef; | |
803 | } | |
804 | ||
805 | return $rolename; | |
806 | } | |
807 | ||
808 | PVE::JSONSchema::register_format('pve-poolid', \&verify_poolname); | |
809 | sub verify_poolname { | |
810 | my ($poolname, $noerr) = @_; | |
811 | ||
812 | if ($poolname !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
813 | ||
814 | die "pool name '$poolname' contains invalid characters\n" if !$noerr; | |
815 | ||
816 | return undef; | |
817 | } | |
818 | ||
819 | return $poolname; | |
820 | } | |
821 | ||
822 | PVE::JSONSchema::register_format('pve-priv', \&verify_privname); | |
823 | sub verify_privname { | |
824 | my ($priv, $noerr) = @_; | |
825 | ||
826 | if (!$valid_privs->{$priv}) { | |
827 | die "invalid privilege '$priv'\n" if !$noerr; | |
828 | ||
829 | return undef; | |
830 | } | |
831 | ||
832 | return $priv; | |
833 | } | |
834 | ||
835 | sub userconfig_force_defaults { | |
836 | my ($cfg) = @_; | |
837 | ||
838 | foreach my $r (keys %$special_roles) { | |
839 | $cfg->{roles}->{$r} = $special_roles->{$r}; | |
840 | } | |
841 | ||
842 | # add root user if not exists | |
843 | if (!$cfg->{users}->{'root@pam'}) { | |
844 | $cfg->{users}->{'root@pam'}->{enable} = 1; | |
845 | } | |
846 | } | |
847 | ||
848 | sub parse_user_config { | |
849 | my ($filename, $raw) = @_; | |
850 | ||
851 | my $cfg = {}; | |
852 | ||
853 | userconfig_force_defaults($cfg); | |
854 | ||
855 | $raw = '' if !defined($raw); | |
856 | while ($raw =~ /^\s*(.+?)\s*$/gm) { | |
857 | my $line = $1; | |
858 | my @data; | |
859 | ||
860 | foreach my $d (split (/:/, $line)) { | |
861 | $d =~ s/^\s+//; | |
862 | $d =~ s/\s+$//; | |
863 | push @data, $d | |
864 | } | |
865 | ||
866 | my $et = shift @data; | |
867 | ||
868 | if ($et eq 'user') { | |
869 | my ($user, $enable, $expire, $firstname, $lastname, $email, $comment, $keys) = @data; | |
870 | ||
871 | my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1); | |
872 | if (!$realm) { | |
873 | warn "user config - ignore user '$user' - invalid user name\n"; | |
874 | next; | |
875 | } | |
876 | ||
877 | $enable = $enable ? 1 : 0; | |
878 | ||
879 | $expire = 0 if !$expire; | |
880 | ||
881 | if ($expire !~ m/^\d+$/) { | |
882 | warn "user config - ignore user '$user' - (illegal characters in expire '$expire')\n"; | |
883 | next; | |
884 | } | |
885 | $expire = int($expire); | |
886 | ||
887 | #if (!verify_groupname ($group, 1)) { | |
888 | # warn "user config - ignore user '$user' - invalid characters in group name\n"; | |
889 | # next; | |
890 | #} | |
891 | ||
892 | $cfg->{users}->{$user} = { | |
893 | enable => $enable, | |
894 | # group => $group, | |
895 | }; | |
896 | $cfg->{users}->{$user}->{firstname} = PVE::Tools::decode_text($firstname) if $firstname; | |
897 | $cfg->{users}->{$user}->{lastname} = PVE::Tools::decode_text($lastname) if $lastname; | |
898 | $cfg->{users}->{$user}->{email} = $email; | |
899 | $cfg->{users}->{$user}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
900 | $cfg->{users}->{$user}->{expire} = $expire; | |
901 | # keys: allowed yubico key ids or oath secrets (base32 encoded) | |
902 | $cfg->{users}->{$user}->{keys} = $keys if $keys; | |
903 | ||
904 | #$cfg->{users}->{$user}->{groups}->{$group} = 1; | |
905 | #$cfg->{groups}->{$group}->{$user} = 1; | |
906 | ||
907 | } elsif ($et eq 'group') { | |
908 | my ($group, $userlist, $comment) = @data; | |
909 | ||
910 | if (!verify_groupname($group, 1)) { | |
911 | warn "user config - ignore group '$group' - invalid characters in group name\n"; | |
912 | next; | |
913 | } | |
914 | ||
915 | # make sure to add the group (even if there are no members) | |
916 | $cfg->{groups}->{$group} = { users => {} } if !$cfg->{groups}->{$group}; | |
917 | ||
918 | $cfg->{groups}->{$group}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
919 | ||
920 | foreach my $user (split_list($userlist)) { | |
921 | ||
922 | if (!PVE::Auth::Plugin::verify_username($user, 1)) { | |
923 | warn "user config - ignore invalid group member '$user'\n"; | |
924 | next; | |
925 | } | |
926 | ||
927 | if ($cfg->{users}->{$user}) { # user exists | |
928 | $cfg->{users}->{$user}->{groups}->{$group} = 1; | |
929 | $cfg->{groups}->{$group}->{users}->{$user} = 1; | |
930 | } else { | |
931 | warn "user config - ignore invalid group member '$user'\n"; | |
932 | } | |
933 | } | |
934 | ||
935 | } elsif ($et eq 'role') { | |
936 | my ($role, $privlist) = @data; | |
937 | ||
938 | if (!verify_rolename($role, 1)) { | |
939 | warn "user config - ignore role '$role' - invalid characters in role name\n"; | |
940 | next; | |
941 | } | |
942 | ||
943 | # make sure to add the role (even if there are no privileges) | |
944 | $cfg->{roles}->{$role} = {} if !$cfg->{roles}->{$role}; | |
945 | ||
946 | foreach my $priv (split_list($privlist)) { | |
947 | if (defined ($valid_privs->{$priv})) { | |
948 | $cfg->{roles}->{$role}->{$priv} = 1; | |
949 | } else { | |
950 | warn "user config - ignore invalid priviledge '$priv'\n"; | |
951 | } | |
952 | } | |
953 | ||
954 | } elsif ($et eq 'acl') { | |
955 | my ($propagate, $pathtxt, $uglist, $rolelist) = @data; | |
956 | ||
957 | if (my $path = normalize_path($pathtxt)) { | |
958 | foreach my $role (split_list($rolelist)) { | |
959 | ||
960 | if (!verify_rolename($role, 1)) { | |
961 | warn "user config - ignore invalid role name '$role' in acl\n"; | |
962 | next; | |
963 | } | |
964 | ||
965 | foreach my $ug (split_list($uglist)) { | |
966 | if ($ug =~ m/^@(\S+)$/) { | |
967 | my $group = $1; | |
968 | if ($cfg->{groups}->{$group}) { # group exists | |
969 | $cfg->{acl}->{$path}->{groups}->{$group}->{$role} = $propagate; | |
970 | } else { | |
971 | warn "user config - ignore invalid acl group '$group'\n"; | |
972 | } | |
973 | } elsif (PVE::Auth::Plugin::verify_username($ug, 1)) { | |
974 | if ($cfg->{users}->{$ug}) { # user exists | |
975 | $cfg->{acl}->{$path}->{users}->{$ug}->{$role} = $propagate; | |
976 | } else { | |
977 | warn "user config - ignore invalid acl member '$ug'\n"; | |
978 | } | |
979 | } else { | |
980 | warn "user config - invalid user/group '$ug' in acl\n"; | |
981 | } | |
982 | } | |
983 | } | |
984 | } else { | |
985 | warn "user config - ignore invalid path in acl '$pathtxt'\n"; | |
986 | } | |
987 | } elsif ($et eq 'pool') { | |
988 | my ($pool, $comment, $vmlist, $storelist) = @data; | |
989 | ||
990 | if (!verify_poolname($pool, 1)) { | |
991 | warn "user config - ignore pool '$pool' - invalid characters in pool name\n"; | |
992 | next; | |
993 | } | |
994 | ||
995 | # make sure to add the pool (even if there are no members) | |
996 | $cfg->{pools}->{$pool} = { vms => {}, storage => {} } if !$cfg->{pools}->{$pool}; | |
997 | ||
998 | $cfg->{pools}->{$pool}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
999 | ||
1000 | foreach my $vmid (split_list($vmlist)) { | |
1001 | if ($vmid !~ m/^\d+$/) { | |
1002 | warn "user config - ignore invalid vmid '$vmid' in pool '$pool'\n"; | |
1003 | next; | |
1004 | } | |
1005 | $vmid = int($vmid); | |
1006 | ||
1007 | if ($cfg->{vms}->{$vmid}) { | |
1008 | warn "user config - ignore duplicate vmid '$vmid' in pool '$pool'\n"; | |
1009 | next; | |
1010 | } | |
1011 | ||
1012 | $cfg->{pools}->{$pool}->{vms}->{$vmid} = 1; | |
1013 | ||
1014 | # record vmid ==> pool relation | |
1015 | $cfg->{vms}->{$vmid} = $pool; | |
1016 | } | |
1017 | ||
1018 | foreach my $storeid (split_list($storelist)) { | |
1019 | if ($storeid !~ m/^[a-z][a-z0-9\-\_\.]*[a-z0-9]$/i) { | |
1020 | warn "user config - ignore invalid storage '$storeid' in pool '$pool'\n"; | |
1021 | next; | |
1022 | } | |
1023 | $cfg->{pools}->{$pool}->{storage}->{$storeid} = 1; | |
1024 | } | |
1025 | } else { | |
1026 | warn "user config - ignore config line: $line\n"; | |
1027 | } | |
1028 | } | |
1029 | ||
1030 | userconfig_force_defaults($cfg); | |
1031 | ||
1032 | return $cfg; | |
1033 | } | |
1034 | ||
1035 | sub write_user_config { | |
1036 | my ($filename, $cfg) = @_; | |
1037 | ||
1038 | my $data = ''; | |
1039 | ||
1040 | foreach my $user (keys %{$cfg->{users}}) { | |
1041 | my $d = $cfg->{users}->{$user}; | |
1042 | my $firstname = $d->{firstname} ? PVE::Tools::encode_text($d->{firstname}) : ''; | |
1043 | my $lastname = $d->{lastname} ? PVE::Tools::encode_text($d->{lastname}) : ''; | |
1044 | my $email = $d->{email} || ''; | |
1045 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
1046 | my $expire = int($d->{expire} || 0); | |
1047 | my $enable = $d->{enable} ? 1 : 0; | |
1048 | my $keys = $d->{keys} ? $d->{keys} : ''; | |
1049 | $data .= "user:$user:$enable:$expire:$firstname:$lastname:$email:$comment:$keys:\n"; | |
1050 | } | |
1051 | ||
1052 | $data .= "\n"; | |
1053 | ||
1054 | foreach my $group (keys %{$cfg->{groups}}) { | |
1055 | my $d = $cfg->{groups}->{$group}; | |
1056 | my $list = join (',', keys %{$d->{users}}); | |
1057 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
1058 | $data .= "group:$group:$list:$comment:\n"; | |
1059 | } | |
1060 | ||
1061 | $data .= "\n"; | |
1062 | ||
1063 | foreach my $pool (keys %{$cfg->{pools}}) { | |
1064 | my $d = $cfg->{pools}->{$pool}; | |
1065 | my $vmlist = join (',', keys %{$d->{vms}}); | |
1066 | my $storelist = join (',', keys %{$d->{storage}}); | |
1067 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
1068 | $data .= "pool:$pool:$comment:$vmlist:$storelist:\n"; | |
1069 | } | |
1070 | ||
1071 | $data .= "\n"; | |
1072 | ||
1073 | foreach my $role (keys %{$cfg->{roles}}) { | |
1074 | next if $special_roles->{$role}; | |
1075 | ||
1076 | my $d = $cfg->{roles}->{$role}; | |
1077 | my $list = join (',', keys %$d); | |
1078 | $data .= "role:$role:$list:\n"; | |
1079 | } | |
1080 | ||
1081 | $data .= "\n"; | |
1082 | ||
1083 | foreach my $path (sort keys %{$cfg->{acl}}) { | |
1084 | my $d = $cfg->{acl}->{$path}; | |
1085 | ||
1086 | my $ra = {}; | |
1087 | ||
1088 | foreach my $group (keys %{$d->{groups}}) { | |
1089 | my $l0 = ''; | |
1090 | my $l1 = ''; | |
1091 | foreach my $role (sort keys %{$d->{groups}->{$group}}) { | |
1092 | my $propagate = $d->{groups}->{$group}->{$role}; | |
1093 | if ($propagate) { | |
1094 | $l1 .= ',' if $l1; | |
1095 | $l1 .= $role; | |
1096 | } else { | |
1097 | $l0 .= ',' if $l0; | |
1098 | $l0 .= $role; | |
1099 | } | |
1100 | } | |
1101 | $ra->{0}->{$l0}->{"\@$group"} = 1 if $l0; | |
1102 | $ra->{1}->{$l1}->{"\@$group"} = 1 if $l1; | |
1103 | } | |
1104 | ||
1105 | foreach my $user (keys %{$d->{users}}) { | |
1106 | # no need to save, because root is always 'Administrator' | |
1107 | next if $user eq 'root@pam'; | |
1108 | ||
1109 | my $l0 = ''; | |
1110 | my $l1 = ''; | |
1111 | foreach my $role (sort keys %{$d->{users}->{$user}}) { | |
1112 | my $propagate = $d->{users}->{$user}->{$role}; | |
1113 | if ($propagate) { | |
1114 | $l1 .= ',' if $l1; | |
1115 | $l1 .= $role; | |
1116 | } else { | |
1117 | $l0 .= ',' if $l0; | |
1118 | $l0 .= $role; | |
1119 | } | |
1120 | } | |
1121 | $ra->{0}->{$l0}->{$user} = 1 if $l0; | |
1122 | $ra->{1}->{$l1}->{$user} = 1 if $l1; | |
1123 | } | |
1124 | ||
1125 | foreach my $rolelist (sort keys %{$ra->{0}}) { | |
1126 | my $uglist = join (',', keys %{$ra->{0}->{$rolelist}}); | |
1127 | $data .= "acl:0:$path:$uglist:$rolelist:\n"; | |
1128 | } | |
1129 | foreach my $rolelist (sort keys %{$ra->{1}}) { | |
1130 | my $uglist = join (',', keys %{$ra->{1}->{$rolelist}}); | |
1131 | $data .= "acl:1:$path:$uglist:$rolelist:\n"; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | return $data; | |
1136 | } | |
1137 | ||
1138 | # The TFA configuration in priv/tfa.cfg format contains one line per user of | |
1139 | # the form: | |
1140 | # USER:TYPE:DATA | |
1141 | # DATA is a base64 encoded json string and its format depends on the type. | |
1142 | sub parse_priv_tfa_config { | |
1143 | my ($filename, $raw) = @_; | |
1144 | ||
1145 | my $users = {}; | |
1146 | my $cfg = { users => $users }; | |
1147 | ||
1148 | $raw = '' if !defined($raw); | |
1149 | while ($raw =~ /^\s*(.+?)\s*$/gm) { | |
1150 | my $line = $1; | |
1151 | my ($user, $type, $data) = split(/:/, $line, 3); | |
1152 | ||
1153 | my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1); | |
1154 | if (!$realm) { | |
1155 | warn "user tfa config - ignore user '$user' - invalid user name\n"; | |
1156 | next; | |
1157 | } | |
1158 | ||
1159 | $data = decode_json(decode_base64($data)); | |
1160 | ||
1161 | $users->{$user} = { | |
1162 | type => $type, | |
1163 | data => $data, | |
1164 | }; | |
1165 | } | |
1166 | ||
1167 | return $cfg; | |
1168 | } | |
1169 | ||
1170 | sub write_priv_tfa_config { | |
1171 | my ($filename, $cfg) = @_; | |
1172 | ||
1173 | my $output = ''; | |
1174 | ||
1175 | my $users = $cfg->{users}; | |
1176 | foreach my $user (sort keys %$users) { | |
1177 | my $info = $users->{$user}; | |
1178 | next if !%$info; # skip empty entries | |
1179 | ||
1180 | $info = {%$info}; # copy to verify contents: | |
1181 | ||
1182 | my $type = delete $info->{type}; | |
1183 | my $data = delete $info->{data}; | |
1184 | ||
1185 | if (my @keys = keys %$info) { | |
1186 | die "invalid keys in TFA config for user $user: " . join(', ', @keys) . "\n"; | |
1187 | } | |
1188 | ||
1189 | $data = encode_base64(encode_json($data), ''); | |
1190 | $output .= "${user}:${type}:${data}\n"; | |
1191 | } | |
1192 | ||
1193 | return $output; | |
1194 | } | |
1195 | ||
1196 | sub roles { | |
1197 | my ($cfg, $user, $path) = @_; | |
1198 | ||
1199 | # NOTE: we do not consider pools here. | |
1200 | # You need to use $rpcenv->roles() instead if you want that. | |
1201 | ||
1202 | return 'Administrator' if $user eq 'root@pam'; # root can do anything | |
1203 | ||
1204 | my $perm = {}; | |
1205 | ||
1206 | foreach my $p (sort keys %{$cfg->{acl}}) { | |
1207 | my $final = ($path eq $p); | |
1208 | ||
1209 | next if !(($p eq '/') || $final || ($path =~ m|^$p/|)); | |
1210 | ||
1211 | my $acl = $cfg->{acl}->{$p}; | |
1212 | ||
1213 | #print "CHECKACL $path $p\n"; | |
1214 | #print "ACL $path = " . Dumper ($acl); | |
1215 | ||
1216 | if (my $ri = $acl->{users}->{$user}) { | |
1217 | my $new; | |
1218 | foreach my $role (keys %$ri) { | |
1219 | my $propagate = $ri->{$role}; | |
1220 | if ($final || $propagate) { | |
1221 | #print "APPLY ROLE $p $user $role\n"; | |
1222 | $new = {} if !$new; | |
1223 | $new->{$role} = 1; | |
1224 | } | |
1225 | } | |
1226 | if ($new) { | |
1227 | $perm = $new; # overwrite previous settings | |
1228 | next; # user privs always override group privs | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | my $new; | |
1233 | foreach my $g (keys %{$acl->{groups}}) { | |
1234 | next if !$cfg->{groups}->{$g}->{users}->{$user}; | |
1235 | if (my $ri = $acl->{groups}->{$g}) { | |
1236 | foreach my $role (keys %$ri) { | |
1237 | my $propagate = $ri->{$role}; | |
1238 | if ($final || $propagate) { | |
1239 | #print "APPLY ROLE $p \@$g $role\n"; | |
1240 | $new = {} if !$new; | |
1241 | $new->{$role} = 1; | |
1242 | } | |
1243 | } | |
1244 | } | |
1245 | } | |
1246 | if ($new) { | |
1247 | $perm = $new; # overwrite previous settings | |
1248 | next; | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | return ('NoAccess') if defined ($perm->{NoAccess}); | |
1253 | #return () if defined ($perm->{NoAccess}); | |
1254 | ||
1255 | #print "permission $user $path = " . Dumper ($perm); | |
1256 | ||
1257 | my @ra = keys %$perm; | |
1258 | ||
1259 | #print "roles $user $path = " . join (',', @ra) . "\n"; | |
1260 | ||
1261 | return @ra; | |
1262 | } | |
1263 | ||
1264 | sub permission { | |
1265 | my ($cfg, $user, $path) = @_; | |
1266 | ||
1267 | $user = PVE::Auth::Plugin::verify_username($user, 1); | |
1268 | return {} if !$user; | |
1269 | ||
1270 | my @ra = roles($cfg, $user, $path); | |
1271 | ||
1272 | my $privs = {}; | |
1273 | ||
1274 | foreach my $role (@ra) { | |
1275 | if (my $privset = $cfg->{roles}->{$role}) { | |
1276 | foreach my $p (keys %$privset) { | |
1277 | $privs->{$p} = 1; | |
1278 | } | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | #print "priviledges $user $path = " . Dumper ($privs); | |
1283 | ||
1284 | return $privs; | |
1285 | } | |
1286 | ||
1287 | sub check_permissions { | |
1288 | my ($username, $path, $privlist) = @_; | |
1289 | ||
1290 | $path = normalize_path($path); | |
1291 | my $usercfg = cfs_read_file('user.cfg'); | |
1292 | my $perm = permission($usercfg, $username, $path); | |
1293 | ||
1294 | foreach my $priv (split_list($privlist)) { | |
1295 | return undef if !$perm->{$priv}; | |
1296 | }; | |
1297 | ||
1298 | return 1; | |
1299 | } | |
1300 | ||
1301 | sub remove_vm_access { | |
1302 | my ($vmid) = @_; | |
1303 | my $delVMaccessFn = sub { | |
1304 | my $usercfg = cfs_read_file("user.cfg"); | |
1305 | my $modified; | |
1306 | ||
1307 | if (my $acl = $usercfg->{acl}->{"/vms/$vmid"}) { | |
1308 | delete $usercfg->{acl}->{"/vms/$vmid"}; | |
1309 | $modified = 1; | |
1310 | } | |
1311 | if (my $pool = $usercfg->{vms}->{$vmid}) { | |
1312 | if (my $data = $usercfg->{pools}->{$pool}) { | |
1313 | delete $data->{vms}->{$vmid}; | |
1314 | delete $usercfg->{vms}->{$vmid}; | |
1315 | $modified = 1; | |
1316 | } | |
1317 | } | |
1318 | cfs_write_file("user.cfg", $usercfg) if $modified; | |
1319 | }; | |
1320 | ||
1321 | lock_user_config($delVMaccessFn, "access permissions cleanup for VM $vmid failed"); | |
1322 | } | |
1323 | ||
1324 | sub remove_storage_access { | |
1325 | my ($storeid) = @_; | |
1326 | ||
1327 | my $deleteStorageAccessFn = sub { | |
1328 | my $usercfg = cfs_read_file("user.cfg"); | |
1329 | my $modified; | |
1330 | ||
1331 | if (my $storage = $usercfg->{acl}->{"/storage/$storeid"}) { | |
1332 | delete $usercfg->{acl}->{"/storage/$storeid"}; | |
1333 | $modified = 1; | |
1334 | } | |
1335 | foreach my $pool (keys %{$usercfg->{pools}}) { | |
1336 | delete $usercfg->{pools}->{$pool}->{storage}->{$storeid}; | |
1337 | $modified = 1; | |
1338 | } | |
1339 | cfs_write_file("user.cfg", $usercfg) if $modified; | |
1340 | }; | |
1341 | ||
1342 | lock_user_config($deleteStorageAccessFn, | |
1343 | "access permissions cleanup for storage $storeid failed"); | |
1344 | } | |
1345 | ||
1346 | sub add_vm_to_pool { | |
1347 | my ($vmid, $pool) = @_; | |
1348 | ||
1349 | my $addVMtoPoolFn = sub { | |
1350 | my $usercfg = cfs_read_file("user.cfg"); | |
1351 | if (my $data = $usercfg->{pools}->{$pool}) { | |
1352 | $data->{vms}->{$vmid} = 1; | |
1353 | $usercfg->{vms}->{$vmid} = $pool; | |
1354 | cfs_write_file("user.cfg", $usercfg); | |
1355 | } | |
1356 | }; | |
1357 | ||
1358 | lock_user_config($addVMtoPoolFn, "can't add VM $vmid to pool '$pool'"); | |
1359 | } | |
1360 | ||
1361 | sub remove_vm_from_pool { | |
1362 | my ($vmid) = @_; | |
1363 | ||
1364 | my $delVMfromPoolFn = sub { | |
1365 | my $usercfg = cfs_read_file("user.cfg"); | |
1366 | if (my $pool = $usercfg->{vms}->{$vmid}) { | |
1367 | if (my $data = $usercfg->{pools}->{$pool}) { | |
1368 | delete $data->{vms}->{$vmid}; | |
1369 | delete $usercfg->{vms}->{$vmid}; | |
1370 | cfs_write_file("user.cfg", $usercfg); | |
1371 | } | |
1372 | } | |
1373 | }; | |
1374 | ||
1375 | lock_user_config($delVMfromPoolFn, "pool cleanup for VM $vmid failed"); | |
1376 | } | |
1377 | ||
1378 | my $USER_CONTROLLED_TFA_TYPES = { | |
1379 | u2f => 1, | |
1380 | oath => 1, | |
1381 | }; | |
1382 | ||
1383 | # Delete an entry by setting $data=undef in which case $type is ignored. | |
1384 | # Otherwise both must be valid. | |
1385 | sub user_set_tfa { | |
1386 | my ($userid, $realm, $type, $data, $cached_usercfg, $cached_domaincfg) = @_; | |
1387 | ||
1388 | if (defined($data) && !defined($type)) { | |
1389 | # This is an internal usage error and should not happen | |
1390 | die "cannot set tfa data without a type\n"; | |
1391 | } | |
1392 | ||
1393 | my $user_cfg = $cached_usercfg || cfs_read_file('user.cfg'); | |
1394 | my $user = $user_cfg->{users}->{$userid} | |
1395 | or die "user '$userid' not found\n"; | |
1396 | ||
1397 | my $domain_cfg = $cached_domaincfg || cfs_read_file('domains.cfg'); | |
1398 | my $realm_cfg = $domain_cfg->{ids}->{$realm}; | |
1399 | die "auth domain '$realm' does not exist\n" if !$realm_cfg; | |
1400 | ||
1401 | my $realm_tfa = $realm_cfg->{tfa}; | |
1402 | if (defined($realm_tfa)) { | |
1403 | $realm_tfa = PVE::Auth::Plugin::parse_tfa_config($realm_tfa); | |
1404 | # If the realm has a TFA setting, we're only allowed to use that. | |
1405 | if (defined($data)) { | |
1406 | my $required_type = $realm_tfa->{type}; | |
1407 | if ($required_type ne $type) { | |
1408 | die "realm '$realm' only allows TFA of type '$required_type\n"; | |
1409 | } | |
1410 | ||
1411 | if (defined($data->{config})) { | |
1412 | # XXX: Is it enough if the type matches? Or should the configuration also match? | |
1413 | } | |
1414 | ||
1415 | # realm-configured tfa always uses a simple key list, so use the user.cfg | |
1416 | $user->{keys} = $data->{keys}; | |
1417 | } else { | |
1418 | die "realm '$realm' does not allow removing the 2nd factor\n"; | |
1419 | } | |
1420 | } else { | |
1421 | # Without a realm-enforced TFA setting the user can add a u2f or totp entry by themselves. | |
1422 | # The 'yubico' type requires yubico server settings, which have to be configured on the | |
1423 | # realm, so this is not supported here: | |
1424 | die "domain '$realm' does not support TFA type '$type'\n" | |
1425 | if defined($data) && !$USER_CONTROLLED_TFA_TYPES->{$type}; | |
1426 | } | |
1427 | ||
1428 | # Custom TFA entries are stored in priv/tfa.cfg as they can be more complet: u2f uses a | |
1429 | # public key and a key handle, TOTP requires the usual totp settings... | |
1430 | ||
1431 | my $tfa_cfg = cfs_read_file('priv/tfa.cfg'); | |
1432 | my $tfa = ($tfa_cfg->{users}->{$userid} //= {}); | |
1433 | ||
1434 | if (defined($data)) { | |
1435 | $tfa->{type} = $type; | |
1436 | $tfa->{data} = $data; | |
1437 | cfs_write_file('priv/tfa.cfg', $tfa_cfg); | |
1438 | ||
1439 | $user->{keys} = "x!$type"; | |
1440 | } else { | |
1441 | delete $tfa_cfg->{users}->{$userid}; | |
1442 | cfs_write_file('priv/tfa.cfg', $tfa_cfg); | |
1443 | ||
1444 | delete $user->{keys}; | |
1445 | } | |
1446 | ||
1447 | cfs_write_file('user.cfg', $user_cfg); | |
1448 | } | |
1449 | ||
1450 | sub user_get_tfa { | |
1451 | my ($username, $realm) = @_; | |
1452 | ||
1453 | my $user_cfg = cfs_read_file('user.cfg'); | |
1454 | my $user = $user_cfg->{users}->{$username} | |
1455 | or die "user '$username' not found\n"; | |
1456 | ||
1457 | my $keys = $user->{keys}; | |
1458 | ||
1459 | my $domain_cfg = cfs_read_file('domains.cfg'); | |
1460 | my $realm_cfg = $domain_cfg->{ids}->{$realm}; | |
1461 | die "auth domain '$realm' does not exist\n" if !$realm_cfg; | |
1462 | ||
1463 | my $realm_tfa = $realm_cfg->{tfa}; | |
1464 | $realm_tfa = PVE::Auth::Plugin::parse_tfa_config($realm_tfa) | |
1465 | if $realm_tfa; | |
1466 | ||
1467 | if (!$keys) { | |
1468 | return if !$realm_tfa; | |
1469 | die "missing required 2nd keys\n"; | |
1470 | } | |
1471 | ||
1472 | # new style config starts with an 'x' and optionally contains a !<type> suffix | |
1473 | if ($keys !~ /^x(?:!.*)?$/) { | |
1474 | # old style config, find the type via the realm | |
1475 | return if !$realm_tfa; | |
1476 | return ($realm_tfa->{type}, { | |
1477 | keys => $keys, | |
1478 | config => $realm_tfa, | |
1479 | }); | |
1480 | } else { | |
1481 | my $tfa_cfg = cfs_read_file('priv/tfa.cfg'); | |
1482 | my $tfa = $tfa_cfg->{users}->{$username}; | |
1483 | return if !$tfa; # should not happen (user.cfg wasn't cleaned up?) | |
1484 | ||
1485 | if ($realm_tfa) { | |
1486 | # if the realm has a tfa setting we need to verify the type: | |
1487 | die "auth domain '$realm' and user have mismatching TFA settings\n" | |
1488 | if $realm_tfa && $realm_tfa->{type} ne $tfa->{type}; | |
1489 | } | |
1490 | ||
1491 | return ($tfa->{type}, $tfa->{data}); | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | # bash completion helpers | |
1496 | ||
1497 | register_standard_option('userid-completed', | |
1498 | get_standard_option('userid', { completion => \&complete_username}), | |
1499 | ); | |
1500 | ||
1501 | sub complete_username { | |
1502 | ||
1503 | my $user_cfg = cfs_read_file('user.cfg'); | |
1504 | ||
1505 | return [ keys %{$user_cfg->{users}} ]; | |
1506 | } | |
1507 | ||
1508 | sub complete_group { | |
1509 | ||
1510 | my $user_cfg = cfs_read_file('user.cfg'); | |
1511 | ||
1512 | return [ keys %{$user_cfg->{groups}} ]; | |
1513 | } | |
1514 | ||
1515 | sub complete_realm { | |
1516 | ||
1517 | my $domain_cfg = cfs_read_file('domains.cfg'); | |
1518 | ||
1519 | return [ keys %{$domain_cfg->{ids}} ]; | |
1520 | } | |
1521 | ||
1522 | 1; |