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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 Digest::HMAC_SHA1; | |
13 | use URI::Escape; | |
14 | use LWP::UserAgent; | |
15 | use PVE::Tools qw(run_command lock_file file_get_contents split_list safe_print); | |
16 | use PVE::Cluster qw(cfs_register_file cfs_read_file cfs_write_file cfs_lock_file); | |
17 | use PVE::JSONSchema; | |
18 | ||
19 | use PVE::Auth::Plugin; | |
20 | use PVE::Auth::AD; | |
21 | use PVE::Auth::LDAP; | |
22 | use PVE::Auth::PVE; | |
23 | use PVE::Auth::PAM; | |
24 | ||
25 | use Data::Dumper; # fixme: remove | |
26 | ||
27 | # load and initialize all plugins | |
28 | ||
29 | PVE::Auth::AD->register(); | |
30 | PVE::Auth::LDAP->register(); | |
31 | PVE::Auth::PVE->register(); | |
32 | PVE::Auth::PAM->register(); | |
33 | PVE::Auth::Plugin->init(); | |
34 | ||
35 | # $authdir must be writable by root only! | |
36 | my $confdir = "/etc/pve"; | |
37 | my $authdir = "$confdir/priv"; | |
38 | my $authprivkeyfn = "$authdir/authkey.key"; | |
39 | my $authpubkeyfn = "$confdir/authkey.pub"; | |
40 | my $pve_www_key_fn = "$confdir/pve-www.key"; | |
41 | ||
42 | my $ticket_lifetime = 3600*2; # 2 hours | |
43 | ||
44 | Crypt::OpenSSL::RSA->import_random_seed(); | |
45 | ||
46 | cfs_register_file('user.cfg', | |
47 | \&parse_user_config, | |
48 | \&write_user_config); | |
49 | ||
50 | ||
51 | sub verify_username { | |
52 | PVE::Auth::Plugin::verify_username(@_); | |
53 | } | |
54 | ||
55 | sub pve_verify_realm { | |
56 | PVE::Auth::Plugin::pve_verify_realm(@_); | |
57 | } | |
58 | ||
59 | sub lock_user_config { | |
60 | my ($code, $errmsg) = @_; | |
61 | ||
62 | cfs_lock_file("user.cfg", undef, $code); | |
63 | if (my $err = $@) { | |
64 | $errmsg ? die "$errmsg: $err" : die $err; | |
65 | } | |
66 | } | |
67 | ||
68 | my $pve_auth_pub_key; | |
69 | sub get_pubkey { | |
70 | ||
71 | return $pve_auth_pub_key if $pve_auth_pub_key; | |
72 | ||
73 | my $input = PVE::Tools::file_get_contents($authpubkeyfn); | |
74 | ||
75 | $pve_auth_pub_key = Crypt::OpenSSL::RSA->new_public_key($input); | |
76 | ||
77 | return $pve_auth_pub_key; | |
78 | } | |
79 | ||
80 | my $csrf_prevention_secret; | |
81 | my $get_csrfr_secret = sub { | |
82 | if (!$csrf_prevention_secret) { | |
83 | my $input = PVE::Tools::file_get_contents($pve_www_key_fn); | |
84 | $csrf_prevention_secret = Digest::SHA::sha1_base64($input); | |
85 | } | |
86 | return $csrf_prevention_secret; | |
87 | }; | |
88 | ||
89 | sub assemble_csrf_prevention_token { | |
90 | my ($username) = @_; | |
91 | ||
92 | my $timestamp = sprintf("%08X", time()); | |
93 | ||
94 | my $digest = Digest::SHA::sha1_base64("$timestamp:$username", &$get_csrfr_secret()); | |
95 | ||
96 | return "$timestamp:$digest"; | |
97 | } | |
98 | ||
99 | sub verify_csrf_prevention_token { | |
100 | my ($username, $token, $noerr) = @_; | |
101 | ||
102 | if ($token =~ m/^([A-Z0-9]{8}):(\S+)$/) { | |
103 | my $sig = $2; | |
104 | my $timestamp = $1; | |
105 | my $ttime = hex($timestamp); | |
106 | ||
107 | my $digest = Digest::SHA::sha1_base64("$timestamp:$username", &$get_csrfr_secret()); | |
108 | ||
109 | my $age = time() - $ttime; | |
110 | return if ($digest eq $sig) && ($age > -300) && ($age < $ticket_lifetime); | |
111 | } | |
112 | ||
113 | die "Permission denied - invalid csrf token\n" if !$noerr; | |
114 | ||
115 | return undef; | |
116 | } | |
117 | ||
118 | my $pve_auth_priv_key; | |
119 | sub get_privkey { | |
120 | ||
121 | return $pve_auth_priv_key if $pve_auth_priv_key; | |
122 | ||
123 | my $input = PVE::Tools::file_get_contents($authprivkeyfn); | |
124 | ||
125 | $pve_auth_priv_key = Crypt::OpenSSL::RSA->new_private_key($input); | |
126 | ||
127 | return $pve_auth_priv_key; | |
128 | } | |
129 | ||
130 | sub assemble_ticket { | |
131 | my ($username) = @_; | |
132 | ||
133 | my $rsa_priv = get_privkey(); | |
134 | ||
135 | my $timestamp = sprintf("%08X", time()); | |
136 | ||
137 | my $plain = "PVE:$username:$timestamp"; | |
138 | ||
139 | my $ticket = $plain . "::" . encode_base64($rsa_priv->sign($plain), ''); | |
140 | ||
141 | return $ticket; | |
142 | } | |
143 | ||
144 | sub verify_ticket { | |
145 | my ($ticket, $noerr) = @_; | |
146 | ||
147 | if ($ticket && $ticket =~ m/^(PVE:\S+)::([^:\s]+)$/) { | |
148 | my $plain = $1; | |
149 | my $sig = $2; | |
150 | ||
151 | my $rsa_pub = get_pubkey(); | |
152 | if ($rsa_pub->verify($plain, decode_base64($sig))) { | |
153 | if ($plain =~ m/^PVE:(\S+):([A-Z0-9]{8})$/) { | |
154 | my $username = $1; | |
155 | my $timestamp = $2; | |
156 | my $ttime = hex($timestamp); | |
157 | ||
158 | my $age = time() - $ttime; | |
159 | ||
160 | if (PVE::Auth::Plugin::verify_username($username, 1) && | |
161 | ($age > -300) && ($age < $ticket_lifetime)) { | |
162 | return wantarray ? ($username, $age) : $username; | |
163 | } | |
164 | } | |
165 | } | |
166 | } | |
167 | ||
168 | die "permission denied - invalid ticket\n" if !$noerr; | |
169 | ||
170 | return undef; | |
171 | } | |
172 | ||
173 | # VNC tickets | |
174 | # - they do not contain the username in plain text | |
175 | # - they are restricted to a specific resource path (example: '/vms/100') | |
176 | sub assemble_vnc_ticket { | |
177 | my ($username, $path) = @_; | |
178 | ||
179 | my $rsa_priv = get_privkey(); | |
180 | ||
181 | my $timestamp = sprintf("%08X", time()); | |
182 | ||
183 | my $plain = "PVEVNC:$timestamp"; | |
184 | ||
185 | $path = normalize_path($path); | |
186 | ||
187 | my $full = "$plain:$username:$path"; | |
188 | ||
189 | my $ticket = $plain . "::" . encode_base64($rsa_priv->sign($full), ''); | |
190 | ||
191 | return $ticket; | |
192 | } | |
193 | ||
194 | sub verify_vnc_ticket { | |
195 | my ($ticket, $username, $path, $noerr) = @_; | |
196 | ||
197 | if ($ticket && $ticket =~ m/^(PVEVNC:\S+)::([^:\s]+)$/) { | |
198 | my $plain = $1; | |
199 | my $sig = $2; | |
200 | my $full = "$plain:$username:$path"; | |
201 | ||
202 | my $rsa_pub = get_pubkey(); | |
203 | # Note: sign only match if $username and $path is correct | |
204 | if ($rsa_pub->verify($full, decode_base64($sig))) { | |
205 | if ($plain =~ m/^PVEVNC:([A-Z0-9]{8})$/) { | |
206 | my $ttime = hex($1); | |
207 | ||
208 | my $age = time() - $ttime; | |
209 | ||
210 | if (($age > -20) && ($age < 40)) { | |
211 | return 1; | |
212 | } | |
213 | } | |
214 | } | |
215 | } | |
216 | ||
217 | die "permission denied - invalid vnc ticket\n" if !$noerr; | |
218 | ||
219 | return undef; | |
220 | } | |
221 | ||
222 | sub assemble_spice_ticket { | |
223 | my ($username, $vmid, $node) = @_; | |
224 | ||
225 | my $rsa_priv = get_privkey(); | |
226 | ||
227 | my $timestamp = sprintf("%08x", time()); | |
228 | ||
229 | my $randomstr = "PVESPICE:$timestamp:$vmid:$node:" . rand(10); | |
230 | ||
231 | # this should be uses as one-time password | |
232 | # max length is 60 chars (spice limit) | |
233 | # we pass this to qemu set_pasword and limit lifetime there | |
234 | # keep this secret | |
235 | my $ticket = Digest::SHA::sha1_hex($rsa_priv->sign($randomstr)); | |
236 | ||
237 | # Note: spice proxy connects with HTTP, so $proxyticket is exposed to public | |
238 | # we use a signature/timestamp to make sure nobody can fake such ticket | |
239 | # an attacker can use this $proxyticket, but he will fail because $ticket is | |
240 | # private. | |
241 | # The proxy need to be able to extract/verify the ticket | |
242 | # Note: data needs to be lower case only, because virt-viewer needs that | |
243 | # Note: RSA signature are too long (>=256 charaters) and makes problems with remote-viewer | |
244 | ||
245 | my $secret = &$get_csrfr_secret(); | |
246 | my $plain = "pvespiceproxy:$timestamp:$vmid:" . lc($node); | |
247 | ||
248 | # produces 40 characters | |
249 | my $sig = unpack("H*", Digest::SHA::sha1($plain, &$get_csrfr_secret())); | |
250 | ||
251 | #my $sig = unpack("H*", $rsa_priv->sign($plain)); # this produce too long strings (512) | |
252 | ||
253 | my $proxyticket = $plain . "::" . $sig; | |
254 | ||
255 | return ($ticket, $proxyticket); | |
256 | } | |
257 | ||
258 | sub verify_spice_connect_url { | |
259 | my ($connect_str) = @_; | |
260 | ||
261 | # Note: we pass the spice ticket as 'host', so the | |
262 | # spice viewer connects with "$ticket:$port" | |
263 | ||
264 | return undef if !$connect_str; | |
265 | ||
266 | if ($connect_str =~m/^pvespiceproxy:([a-z0-9]{8}):(\d+):(\S+)::([a-z0-9]{40}):(\d+)$/) { | |
267 | my ($timestamp, $vmid, $node, $hexsig, $port) = ($1, $2, $3, $4, $5, $6); | |
268 | my $ttime = hex($timestamp); | |
269 | my $age = time() - $ttime; | |
270 | ||
271 | # use very limited lifetime - is this enough? | |
272 | return undef if !(($age > -20) && ($age < 40)); | |
273 | ||
274 | my $plain = "pvespiceproxy:$timestamp:$vmid:$node"; | |
275 | my $sig = unpack("H*", Digest::SHA::sha1($plain, &$get_csrfr_secret())); | |
276 | ||
277 | if ($sig eq $hexsig) { | |
278 | return ($vmid, $node, $port); | |
279 | } | |
280 | } | |
281 | ||
282 | return undef; | |
283 | } | |
284 | ||
285 | sub read_x509_subject_spice { | |
286 | my ($filename) = @_; | |
287 | ||
288 | # read x509 subject | |
289 | my $bio = Net::SSLeay::BIO_new_file($filename, 'r'); | |
290 | my $x509 = Net::SSLeay::PEM_read_bio_X509($bio); | |
291 | Net::SSLeay::BIO_free($bio); | |
292 | my $nameobj = Net::SSLeay::X509_get_subject_name($x509); | |
293 | my $subject = Net::SSLeay::X509_NAME_oneline($nameobj); | |
294 | Net::SSLeay::X509_free($x509); | |
295 | ||
296 | # remote-viewer wants comma as seperator (not '/') | |
297 | $subject =~ s!^/!!; | |
298 | $subject =~ s!/(\w+=)!,$1!g; | |
299 | ||
300 | return $subject; | |
301 | } | |
302 | ||
303 | # helper to generate SPICE remote-viewer configuration | |
304 | sub remote_viewer_config { | |
305 | my ($authuser, $vmid, $node, $proxy, $title, $port) = @_; | |
306 | ||
307 | if (!$proxy) { | |
308 | my $host = `hostname -f` || PVE::INotify::nodename(); | |
309 | chomp $host; | |
310 | $proxy = $host; | |
311 | } | |
312 | ||
313 | my ($ticket, $proxyticket) = assemble_spice_ticket($authuser, $vmid, $node); | |
314 | ||
315 | my $filename = "/etc/pve/local/pve-ssl.pem"; | |
316 | my $subject = read_x509_subject_spice($filename); | |
317 | ||
318 | my $cacert = PVE::Tools::file_get_contents("/etc/pve/pve-root-ca.pem", 8192); | |
319 | $cacert =~ s/\n/\\n/g; | |
320 | ||
321 | $proxy = "[$proxy]" if Net::IP::ip_is_ipv6($proxy); | |
322 | my $config = { | |
323 | 'secure-attention' => "Ctrl+Alt+Ins", | |
324 | 'toggle-fullscreen' => "Shift+F11", | |
325 | 'release-cursor' => "Ctrl+Alt+R", | |
326 | type => 'spice', | |
327 | title => $title, | |
328 | host => $proxyticket, # this break tls hostname verification, so we need to use 'host-subject' | |
329 | proxy => "http://$proxy:3128", | |
330 | 'tls-port' => $port, | |
331 | 'host-subject' => $subject, | |
332 | ca => $cacert, | |
333 | password => $ticket, | |
334 | 'delete-this-file' => 1, | |
335 | }; | |
336 | ||
337 | return ($ticket, $proxyticket, $config); | |
338 | } | |
339 | ||
340 | sub check_user_exist { | |
341 | my ($usercfg, $username, $noerr) = @_; | |
342 | ||
343 | $username = PVE::Auth::Plugin::verify_username($username, $noerr); | |
344 | return undef if !$username; | |
345 | ||
346 | return $usercfg->{users}->{$username} if $usercfg && $usercfg->{users}->{$username}; | |
347 | ||
348 | die "no such user ('$username')\n" if !$noerr; | |
349 | ||
350 | return undef; | |
351 | } | |
352 | ||
353 | sub check_user_enabled { | |
354 | my ($usercfg, $username, $noerr) = @_; | |
355 | ||
356 | my $data = check_user_exist($usercfg, $username, $noerr); | |
357 | return undef if !$data; | |
358 | ||
359 | return 1 if $data->{enable}; | |
360 | ||
361 | die "user '$username' is disabled\n" if !$noerr; | |
362 | ||
363 | return undef; | |
364 | } | |
365 | ||
366 | sub verify_one_time_pw { | |
367 | my ($usercfg, $username, $tfa_cfg, $otp) = @_; | |
368 | ||
369 | my $type = $tfa_cfg->{type}; | |
370 | ||
371 | die "missing one time password for Factor-two authentication '$type'\n" if !$otp; | |
372 | ||
373 | # fixme: proxy support? | |
374 | my $proxy; | |
375 | ||
376 | if ($type eq 'yubico') { | |
377 | my $keys = $usercfg->{users}->{$username}->{keys}; | |
378 | yubico_verify_otp($otp, $keys, $tfa_cfg->{url}, $tfa_cfg->{id}, $tfa_cfg->{key}, $proxy); | |
379 | } elsif ($type eq 'oath') { | |
380 | my $keys = $usercfg->{users}->{$username}->{keys}; | |
381 | oath_verify_otp($otp, $keys, $tfa_cfg->{step}, $tfa_cfg->{digits}); | |
382 | } else { | |
383 | die "unknown tfa type '$type'\n"; | |
384 | } | |
385 | } | |
386 | ||
387 | # password should be utf8 encoded | |
388 | # Note: some pluging delay/sleep if auth fails | |
389 | sub authenticate_user { | |
390 | my ($username, $password, $otp) = @_; | |
391 | ||
392 | die "no username specified\n" if !$username; | |
393 | ||
394 | my ($ruid, $realm); | |
395 | ||
396 | ($username, $ruid, $realm) = PVE::Auth::Plugin::verify_username($username); | |
397 | ||
398 | my $usercfg = cfs_read_file('user.cfg'); | |
399 | ||
400 | check_user_enabled($usercfg, $username); | |
401 | ||
402 | my $ctime = time(); | |
403 | my $expire = $usercfg->{users}->{$username}->{expire}; | |
404 | ||
405 | die "account expired\n" if $expire && ($expire < $ctime); | |
406 | ||
407 | my $domain_cfg = cfs_read_file('domains.cfg'); | |
408 | ||
409 | my $cfg = $domain_cfg->{ids}->{$realm}; | |
410 | die "auth domain '$realm' does not exists\n" if !$cfg; | |
411 | my $plugin = PVE::Auth::Plugin->lookup($cfg->{type}); | |
412 | $plugin->authenticate_user($cfg, $realm, $ruid, $password); | |
413 | ||
414 | if ($cfg->{tfa}) { | |
415 | my $tfa_cfg = PVE::Auth::Plugin::parse_tfa_config($cfg->{tfa}); | |
416 | verify_one_time_pw($usercfg, $username, $tfa_cfg, $otp); | |
417 | } | |
418 | ||
419 | return $username; | |
420 | } | |
421 | ||
422 | sub domain_set_password { | |
423 | my ($realm, $username, $password) = @_; | |
424 | ||
425 | die "no auth domain specified" if !$realm; | |
426 | ||
427 | my $domain_cfg = cfs_read_file('domains.cfg'); | |
428 | ||
429 | my $cfg = $domain_cfg->{ids}->{$realm}; | |
430 | die "auth domain '$realm' does not exists\n" if !$cfg; | |
431 | my $plugin = PVE::Auth::Plugin->lookup($cfg->{type}); | |
432 | $plugin->store_password($cfg, $realm, $username, $password); | |
433 | } | |
434 | ||
435 | sub add_user_group { | |
436 | my ($username, $usercfg, $group) = @_; | |
437 | ||
438 | $usercfg->{users}->{$username}->{groups}->{$group} = 1; | |
439 | $usercfg->{groups}->{$group}->{users}->{$username} = 1; | |
440 | } | |
441 | ||
442 | sub delete_user_group { | |
443 | my ($username, $usercfg) = @_; | |
444 | ||
445 | foreach my $group (keys %{$usercfg->{groups}}) { | |
446 | ||
447 | delete ($usercfg->{groups}->{$group}->{users}->{$username}) | |
448 | if $usercfg->{groups}->{$group}->{users}->{$username}; | |
449 | } | |
450 | } | |
451 | ||
452 | sub delete_user_acl { | |
453 | my ($username, $usercfg) = @_; | |
454 | ||
455 | foreach my $acl (keys %{$usercfg->{acl}}) { | |
456 | ||
457 | delete ($usercfg->{acl}->{$acl}->{users}->{$username}) | |
458 | if $usercfg->{acl}->{$acl}->{users}->{$username}; | |
459 | } | |
460 | } | |
461 | ||
462 | sub delete_group_acl { | |
463 | my ($group, $usercfg) = @_; | |
464 | ||
465 | foreach my $acl (keys %{$usercfg->{acl}}) { | |
466 | ||
467 | delete ($usercfg->{acl}->{$acl}->{groups}->{$group}) | |
468 | if $usercfg->{acl}->{$acl}->{groups}->{$group}; | |
469 | } | |
470 | } | |
471 | ||
472 | sub delete_pool_acl { | |
473 | my ($pool, $usercfg) = @_; | |
474 | ||
475 | my $path = "/pool/$pool"; | |
476 | ||
477 | delete ($usercfg->{acl}->{$path}) | |
478 | } | |
479 | ||
480 | # we automatically create some predefined roles by splitting privs | |
481 | # into 3 groups (per category) | |
482 | # root: only root is allowed to do that | |
483 | # admin: an administrator can to that | |
484 | # user: a normak user/customer can to that | |
485 | my $privgroups = { | |
486 | VM => { | |
487 | root => [], | |
488 | admin => [ | |
489 | 'VM.Config.Disk', | |
490 | 'VM.Config.CPU', | |
491 | 'VM.Config.Memory', | |
492 | 'VM.Config.Network', | |
493 | 'VM.Config.HWType', | |
494 | 'VM.Config.Options', # covers all other things | |
495 | 'VM.Allocate', | |
496 | 'VM.Clone', | |
497 | 'VM.Migrate', | |
498 | 'VM.Monitor', | |
499 | 'VM.Snapshot', | |
500 | ], | |
501 | user => [ | |
502 | 'VM.Config.CDROM', # change CDROM media | |
503 | 'VM.Console', | |
504 | 'VM.Backup', | |
505 | 'VM.PowerMgmt', | |
506 | ], | |
507 | audit => [ | |
508 | 'VM.Audit', | |
509 | ], | |
510 | }, | |
511 | Sys => { | |
512 | root => [ | |
513 | 'Sys.PowerMgmt', | |
514 | 'Sys.Modify', # edit/change node settings | |
515 | ], | |
516 | admin => [ | |
517 | 'Permissions.Modify', | |
518 | 'Sys.Console', | |
519 | 'Sys.Syslog', | |
520 | ], | |
521 | user => [], | |
522 | audit => [ | |
523 | 'Sys.Audit', | |
524 | ], | |
525 | }, | |
526 | Datastore => { | |
527 | root => [], | |
528 | admin => [ | |
529 | 'Datastore.Allocate', | |
530 | 'Datastore.AllocateTemplate', | |
531 | ], | |
532 | user => [ | |
533 | 'Datastore.AllocateSpace', | |
534 | ], | |
535 | audit => [ | |
536 | 'Datastore.Audit', | |
537 | ], | |
538 | }, | |
539 | User => { | |
540 | root => [ | |
541 | 'Realm.Allocate', | |
542 | ], | |
543 | admin => [ | |
544 | 'User.Modify', | |
545 | 'Group.Allocate', # edit/change group settings | |
546 | 'Realm.AllocateUser', | |
547 | ], | |
548 | user => [], | |
549 | audit => [], | |
550 | }, | |
551 | Pool => { | |
552 | root => [], | |
553 | admin => [ | |
554 | 'Pool.Allocate', # create/delete pools | |
555 | ], | |
556 | user => [], | |
557 | audit => [], | |
558 | }, | |
559 | }; | |
560 | ||
561 | my $valid_privs = {}; | |
562 | ||
563 | my $special_roles = { | |
564 | 'NoAccess' => {}, # no priviledges | |
565 | 'Administrator' => $valid_privs, # all priviledges | |
566 | }; | |
567 | ||
568 | sub create_roles { | |
569 | ||
570 | foreach my $cat (keys %$privgroups) { | |
571 | my $cd = $privgroups->{$cat}; | |
572 | foreach my $p (@{$cd->{root}}, @{$cd->{admin}}, | |
573 | @{$cd->{user}}, @{$cd->{audit}}) { | |
574 | $valid_privs->{$p} = 1; | |
575 | } | |
576 | foreach my $p (@{$cd->{admin}}, @{$cd->{user}}, @{$cd->{audit}}) { | |
577 | ||
578 | $special_roles->{"PVE${cat}Admin"}->{$p} = 1; | |
579 | $special_roles->{"PVEAdmin"}->{$p} = 1; | |
580 | } | |
581 | if (scalar(@{$cd->{user}})) { | |
582 | foreach my $p (@{$cd->{user}}, @{$cd->{audit}}) { | |
583 | $special_roles->{"PVE${cat}User"}->{$p} = 1; | |
584 | } | |
585 | } | |
586 | foreach my $p (@{$cd->{audit}}) { | |
587 | $special_roles->{"PVEAuditor"}->{$p} = 1; | |
588 | } | |
589 | } | |
590 | ||
591 | $special_roles->{"PVETemplateUser"} = { 'VM.Clone' => 1, 'VM.Audit' => 1 }; | |
592 | }; | |
593 | ||
594 | create_roles(); | |
595 | ||
596 | sub add_role_privs { | |
597 | my ($role, $usercfg, $privs) = @_; | |
598 | ||
599 | return if !$privs; | |
600 | ||
601 | die "role '$role' does not exist\n" if !$usercfg->{roles}->{$role}; | |
602 | ||
603 | foreach my $priv (split_list($privs)) { | |
604 | if (defined ($valid_privs->{$priv})) { | |
605 | $usercfg->{roles}->{$role}->{$priv} = 1; | |
606 | } else { | |
607 | die "invalid priviledge '$priv'\n"; | |
608 | } | |
609 | } | |
610 | } | |
611 | ||
612 | sub normalize_path { | |
613 | my $path = shift; | |
614 | ||
615 | $path =~ s|/+|/|g; | |
616 | ||
617 | $path =~ s|/$||; | |
618 | ||
619 | $path = '/' if !$path; | |
620 | ||
621 | $path = "/$path" if $path !~ m|^/|; | |
622 | ||
623 | return undef if $path !~ m|^[[:alnum:]\.\-\_\/]+$|; | |
624 | ||
625 | return $path; | |
626 | } | |
627 | ||
628 | ||
629 | PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname); | |
630 | sub verify_groupname { | |
631 | my ($groupname, $noerr) = @_; | |
632 | ||
633 | if ($groupname !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
634 | ||
635 | die "group name '$groupname' contains invalid characters\n" if !$noerr; | |
636 | ||
637 | return undef; | |
638 | } | |
639 | ||
640 | return $groupname; | |
641 | } | |
642 | ||
643 | PVE::JSONSchema::register_format('pve-roleid', \&verify_rolename); | |
644 | sub verify_rolename { | |
645 | my ($rolename, $noerr) = @_; | |
646 | ||
647 | if ($rolename !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
648 | ||
649 | die "role name '$rolename' contains invalid characters\n" if !$noerr; | |
650 | ||
651 | return undef; | |
652 | } | |
653 | ||
654 | return $rolename; | |
655 | } | |
656 | ||
657 | PVE::JSONSchema::register_format('pve-poolid', \&verify_groupname); | |
658 | sub verify_poolname { | |
659 | my ($poolname, $noerr) = @_; | |
660 | ||
661 | if ($poolname !~ m/^[A-Za-z0-9\.\-_]+$/) { | |
662 | ||
663 | die "pool name '$poolname' contains invalid characters\n" if !$noerr; | |
664 | ||
665 | return undef; | |
666 | } | |
667 | ||
668 | return $poolname; | |
669 | } | |
670 | ||
671 | PVE::JSONSchema::register_format('pve-priv', \&verify_privname); | |
672 | sub verify_privname { | |
673 | my ($priv, $noerr) = @_; | |
674 | ||
675 | if (!$valid_privs->{$priv}) { | |
676 | die "invalid priviledge '$priv'\n" if !$noerr; | |
677 | ||
678 | return undef; | |
679 | } | |
680 | ||
681 | return $priv; | |
682 | } | |
683 | ||
684 | sub userconfig_force_defaults { | |
685 | my ($cfg) = @_; | |
686 | ||
687 | foreach my $r (keys %$special_roles) { | |
688 | $cfg->{roles}->{$r} = $special_roles->{$r}; | |
689 | } | |
690 | ||
691 | # add root user if not exists | |
692 | if (!$cfg->{users}->{'root@pam'}) { | |
693 | $cfg->{users}->{'root@pam'}->{enable} = 1; | |
694 | } | |
695 | } | |
696 | ||
697 | sub parse_user_config { | |
698 | my ($filename, $raw) = @_; | |
699 | ||
700 | my $cfg = {}; | |
701 | ||
702 | userconfig_force_defaults($cfg); | |
703 | ||
704 | $raw = '' if !defined($raw); | |
705 | while ($raw =~ /^\s*(.+?)\s*$/gm) { | |
706 | my $line = $1; | |
707 | my @data; | |
708 | ||
709 | foreach my $d (split (/:/, $line)) { | |
710 | $d =~ s/^\s+//; | |
711 | $d =~ s/\s+$//; | |
712 | push @data, $d | |
713 | } | |
714 | ||
715 | my $et = shift @data; | |
716 | ||
717 | if ($et eq 'user') { | |
718 | my ($user, $enable, $expire, $firstname, $lastname, $email, $comment, $keys) = @data; | |
719 | ||
720 | my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1); | |
721 | if (!$realm) { | |
722 | warn "user config - ignore user '$user' - invalid user name\n"; | |
723 | next; | |
724 | } | |
725 | ||
726 | $enable = $enable ? 1 : 0; | |
727 | ||
728 | $expire = 0 if !$expire; | |
729 | ||
730 | if ($expire !~ m/^\d+$/) { | |
731 | warn "user config - ignore user '$user' - (illegal characters in expire '$expire')\n"; | |
732 | next; | |
733 | } | |
734 | $expire = int($expire); | |
735 | ||
736 | #if (!verify_groupname ($group, 1)) { | |
737 | # warn "user config - ignore user '$user' - invalid characters in group name\n"; | |
738 | # next; | |
739 | #} | |
740 | ||
741 | $cfg->{users}->{$user} = { | |
742 | enable => $enable, | |
743 | # group => $group, | |
744 | }; | |
745 | $cfg->{users}->{$user}->{firstname} = PVE::Tools::decode_text($firstname) if $firstname; | |
746 | $cfg->{users}->{$user}->{lastname} = PVE::Tools::decode_text($lastname) if $lastname; | |
747 | $cfg->{users}->{$user}->{email} = $email; | |
748 | $cfg->{users}->{$user}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
749 | $cfg->{users}->{$user}->{expire} = $expire; | |
750 | # keys: allowed yubico key ids or oath secrets (base32 encoded) | |
751 | $cfg->{users}->{$user}->{keys} = $keys if $keys; | |
752 | ||
753 | #$cfg->{users}->{$user}->{groups}->{$group} = 1; | |
754 | #$cfg->{groups}->{$group}->{$user} = 1; | |
755 | ||
756 | } elsif ($et eq 'group') { | |
757 | my ($group, $userlist, $comment) = @data; | |
758 | ||
759 | if (!verify_groupname($group, 1)) { | |
760 | warn "user config - ignore group '$group' - invalid characters in group name\n"; | |
761 | next; | |
762 | } | |
763 | ||
764 | # make sure to add the group (even if there are no members) | |
765 | $cfg->{groups}->{$group} = { users => {} } if !$cfg->{groups}->{$group}; | |
766 | ||
767 | $cfg->{groups}->{$group}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
768 | ||
769 | foreach my $user (split_list($userlist)) { | |
770 | ||
771 | if (!PVE::Auth::Plugin::verify_username($user, 1)) { | |
772 | warn "user config - ignore invalid group member '$user'\n"; | |
773 | next; | |
774 | } | |
775 | ||
776 | if ($cfg->{users}->{$user}) { # user exists | |
777 | $cfg->{users}->{$user}->{groups}->{$group} = 1; | |
778 | $cfg->{groups}->{$group}->{users}->{$user} = 1; | |
779 | } else { | |
780 | warn "user config - ignore invalid group member '$user'\n"; | |
781 | } | |
782 | } | |
783 | ||
784 | } elsif ($et eq 'role') { | |
785 | my ($role, $privlist) = @data; | |
786 | ||
787 | if (!verify_rolename($role, 1)) { | |
788 | warn "user config - ignore role '$role' - invalid characters in role name\n"; | |
789 | next; | |
790 | } | |
791 | ||
792 | # make sure to add the role (even if there are no privileges) | |
793 | $cfg->{roles}->{$role} = {} if !$cfg->{roles}->{$role}; | |
794 | ||
795 | foreach my $priv (split_list($privlist)) { | |
796 | if (defined ($valid_privs->{$priv})) { | |
797 | $cfg->{roles}->{$role}->{$priv} = 1; | |
798 | } else { | |
799 | warn "user config - ignore invalid priviledge '$priv'\n"; | |
800 | } | |
801 | } | |
802 | ||
803 | } elsif ($et eq 'acl') { | |
804 | my ($propagate, $pathtxt, $uglist, $rolelist) = @data; | |
805 | ||
806 | if (my $path = normalize_path($pathtxt)) { | |
807 | foreach my $role (split_list($rolelist)) { | |
808 | ||
809 | if (!verify_rolename($role, 1)) { | |
810 | warn "user config - ignore invalid role name '$role' in acl\n"; | |
811 | next; | |
812 | } | |
813 | ||
814 | foreach my $ug (split_list($uglist)) { | |
815 | if ($ug =~ m/^@(\S+)$/) { | |
816 | my $group = $1; | |
817 | if ($cfg->{groups}->{$group}) { # group exists | |
818 | $cfg->{acl}->{$path}->{groups}->{$group}->{$role} = $propagate; | |
819 | } else { | |
820 | warn "user config - ignore invalid acl group '$group'\n"; | |
821 | } | |
822 | } elsif (PVE::Auth::Plugin::verify_username($ug, 1)) { | |
823 | if ($cfg->{users}->{$ug}) { # user exists | |
824 | $cfg->{acl}->{$path}->{users}->{$ug}->{$role} = $propagate; | |
825 | } else { | |
826 | warn "user config - ignore invalid acl member '$ug'\n"; | |
827 | } | |
828 | } else { | |
829 | warn "user config - invalid user/group '$ug' in acl\n"; | |
830 | } | |
831 | } | |
832 | } | |
833 | } else { | |
834 | warn "user config - ignore invalid path in acl '$pathtxt'\n"; | |
835 | } | |
836 | } elsif ($et eq 'pool') { | |
837 | my ($pool, $comment, $vmlist, $storelist) = @data; | |
838 | ||
839 | if (!verify_poolname($pool, 1)) { | |
840 | warn "user config - ignore pool '$pool' - invalid characters in pool name\n"; | |
841 | next; | |
842 | } | |
843 | ||
844 | # make sure to add the pool (even if there are no members) | |
845 | $cfg->{pools}->{$pool} = { vms => {}, storage => {} } if !$cfg->{pools}->{$pool}; | |
846 | ||
847 | $cfg->{pools}->{$pool}->{comment} = PVE::Tools::decode_text($comment) if $comment; | |
848 | ||
849 | foreach my $vmid (split_list($vmlist)) { | |
850 | if ($vmid !~ m/^\d+$/) { | |
851 | warn "user config - ignore invalid vmid '$vmid' in pool '$pool'\n"; | |
852 | next; | |
853 | } | |
854 | $vmid = int($vmid); | |
855 | ||
856 | if ($cfg->{vms}->{$vmid}) { | |
857 | warn "user config - ignore duplicate vmid '$vmid' in pool '$pool'\n"; | |
858 | next; | |
859 | } | |
860 | ||
861 | $cfg->{pools}->{$pool}->{vms}->{$vmid} = 1; | |
862 | ||
863 | # record vmid ==> pool relation | |
864 | $cfg->{vms}->{$vmid} = $pool; | |
865 | } | |
866 | ||
867 | foreach my $storeid (split_list($storelist)) { | |
868 | if ($storeid !~ m/^[a-z][a-z0-9\-\_\.]*[a-z0-9]$/i) { | |
869 | warn "user config - ignore invalid storage '$storeid' in pool '$pool'\n"; | |
870 | next; | |
871 | } | |
872 | $cfg->{pools}->{$pool}->{storage}->{$storeid} = 1; | |
873 | } | |
874 | } else { | |
875 | warn "user config - ignore config line: $line\n"; | |
876 | } | |
877 | } | |
878 | ||
879 | userconfig_force_defaults($cfg); | |
880 | ||
881 | return $cfg; | |
882 | } | |
883 | ||
884 | sub write_user_config { | |
885 | my ($filename, $cfg) = @_; | |
886 | ||
887 | my $data = ''; | |
888 | ||
889 | foreach my $user (keys %{$cfg->{users}}) { | |
890 | my $d = $cfg->{users}->{$user}; | |
891 | my $firstname = $d->{firstname} ? PVE::Tools::encode_text($d->{firstname}) : ''; | |
892 | my $lastname = $d->{lastname} ? PVE::Tools::encode_text($d->{lastname}) : ''; | |
893 | my $email = $d->{email} || ''; | |
894 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
895 | my $expire = int($d->{expire} || 0); | |
896 | my $enable = $d->{enable} ? 1 : 0; | |
897 | my $keys = $d->{keys} ? $d->{keys} : ''; | |
898 | $data .= "user:$user:$enable:$expire:$firstname:$lastname:$email:$comment:$keys:\n"; | |
899 | } | |
900 | ||
901 | $data .= "\n"; | |
902 | ||
903 | foreach my $group (keys %{$cfg->{groups}}) { | |
904 | my $d = $cfg->{groups}->{$group}; | |
905 | my $list = join (',', keys %{$d->{users}}); | |
906 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
907 | $data .= "group:$group:$list:$comment:\n"; | |
908 | } | |
909 | ||
910 | $data .= "\n"; | |
911 | ||
912 | foreach my $pool (keys %{$cfg->{pools}}) { | |
913 | my $d = $cfg->{pools}->{$pool}; | |
914 | my $vmlist = join (',', keys %{$d->{vms}}); | |
915 | my $storelist = join (',', keys %{$d->{storage}}); | |
916 | my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; | |
917 | $data .= "pool:$pool:$comment:$vmlist:$storelist:\n"; | |
918 | } | |
919 | ||
920 | $data .= "\n"; | |
921 | ||
922 | foreach my $role (keys %{$cfg->{roles}}) { | |
923 | next if $special_roles->{$role}; | |
924 | ||
925 | my $d = $cfg->{roles}->{$role}; | |
926 | my $list = join (',', keys %$d); | |
927 | $data .= "role:$role:$list:\n"; | |
928 | } | |
929 | ||
930 | $data .= "\n"; | |
931 | ||
932 | foreach my $path (sort keys %{$cfg->{acl}}) { | |
933 | my $d = $cfg->{acl}->{$path}; | |
934 | ||
935 | my $ra = {}; | |
936 | ||
937 | foreach my $group (keys %{$d->{groups}}) { | |
938 | my $l0 = ''; | |
939 | my $l1 = ''; | |
940 | foreach my $role (sort keys %{$d->{groups}->{$group}}) { | |
941 | my $propagate = $d->{groups}->{$group}->{$role}; | |
942 | if ($propagate) { | |
943 | $l1 .= ',' if $l1; | |
944 | $l1 .= $role; | |
945 | } else { | |
946 | $l0 .= ',' if $l0; | |
947 | $l0 .= $role; | |
948 | } | |
949 | } | |
950 | $ra->{0}->{$l0}->{"\@$group"} = 1 if $l0; | |
951 | $ra->{1}->{$l1}->{"\@$group"} = 1 if $l1; | |
952 | } | |
953 | ||
954 | foreach my $user (keys %{$d->{users}}) { | |
955 | # no need to save, because root is always 'Administartor' | |
956 | next if $user eq 'root@pam'; | |
957 | ||
958 | my $l0 = ''; | |
959 | my $l1 = ''; | |
960 | foreach my $role (sort keys %{$d->{users}->{$user}}) { | |
961 | my $propagate = $d->{users}->{$user}->{$role}; | |
962 | if ($propagate) { | |
963 | $l1 .= ',' if $l1; | |
964 | $l1 .= $role; | |
965 | } else { | |
966 | $l0 .= ',' if $l0; | |
967 | $l0 .= $role; | |
968 | } | |
969 | } | |
970 | $ra->{0}->{$l0}->{$user} = 1 if $l0; | |
971 | $ra->{1}->{$l1}->{$user} = 1 if $l1; | |
972 | } | |
973 | ||
974 | foreach my $rolelist (sort keys %{$ra->{0}}) { | |
975 | my $uglist = join (',', keys %{$ra->{0}->{$rolelist}}); | |
976 | $data .= "acl:0:$path:$uglist:$rolelist:\n"; | |
977 | } | |
978 | foreach my $rolelist (sort keys %{$ra->{1}}) { | |
979 | my $uglist = join (',', keys %{$ra->{1}->{$rolelist}}); | |
980 | $data .= "acl:1:$path:$uglist:$rolelist:\n"; | |
981 | } | |
982 | } | |
983 | ||
984 | return $data; | |
985 | } | |
986 | ||
987 | sub roles { | |
988 | my ($cfg, $user, $path) = @_; | |
989 | ||
990 | # NOTE: we do not consider pools here. | |
991 | # You need to use $rpcenv->roles() instead if you want that. | |
992 | ||
993 | return 'Administrator' if $user eq 'root@pam'; # root can do anything | |
994 | ||
995 | my $perm = {}; | |
996 | ||
997 | foreach my $p (sort keys %{$cfg->{acl}}) { | |
998 | my $final = ($path eq $p); | |
999 | ||
1000 | next if !(($p eq '/') || $final || ($path =~ m|^$p/|)); | |
1001 | ||
1002 | my $acl = $cfg->{acl}->{$p}; | |
1003 | ||
1004 | #print "CHECKACL $path $p\n"; | |
1005 | #print "ACL $path = " . Dumper ($acl); | |
1006 | ||
1007 | if (my $ri = $acl->{users}->{$user}) { | |
1008 | my $new; | |
1009 | foreach my $role (keys %$ri) { | |
1010 | my $propagate = $ri->{$role}; | |
1011 | if ($final || $propagate) { | |
1012 | #print "APPLY ROLE $p $user $role\n"; | |
1013 | $new = {} if !$new; | |
1014 | $new->{$role} = 1; | |
1015 | } | |
1016 | } | |
1017 | if ($new) { | |
1018 | $perm = $new; # overwrite previous settings | |
1019 | next; # user privs always override group privs | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | my $new; | |
1024 | foreach my $g (keys %{$acl->{groups}}) { | |
1025 | next if !$cfg->{groups}->{$g}->{users}->{$user}; | |
1026 | if (my $ri = $acl->{groups}->{$g}) { | |
1027 | foreach my $role (keys %$ri) { | |
1028 | my $propagate = $ri->{$role}; | |
1029 | if ($final || $propagate) { | |
1030 | #print "APPLY ROLE $p \@$g $role\n"; | |
1031 | $new = {} if !$new; | |
1032 | $new->{$role} = 1; | |
1033 | } | |
1034 | } | |
1035 | } | |
1036 | } | |
1037 | if ($new) { | |
1038 | $perm = $new; # overwrite previous settings | |
1039 | next; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | return ('NoAccess') if defined ($perm->{NoAccess}); | |
1044 | #return () if defined ($perm->{NoAccess}); | |
1045 | ||
1046 | #print "permission $user $path = " . Dumper ($perm); | |
1047 | ||
1048 | my @ra = keys %$perm; | |
1049 | ||
1050 | #print "roles $user $path = " . join (',', @ra) . "\n"; | |
1051 | ||
1052 | return @ra; | |
1053 | } | |
1054 | ||
1055 | sub permission { | |
1056 | my ($cfg, $user, $path) = @_; | |
1057 | ||
1058 | $user = PVE::Auth::Plugin::verify_username($user, 1); | |
1059 | return {} if !$user; | |
1060 | ||
1061 | my @ra = roles($cfg, $user, $path); | |
1062 | ||
1063 | my $privs = {}; | |
1064 | ||
1065 | foreach my $role (@ra) { | |
1066 | if (my $privset = $cfg->{roles}->{$role}) { | |
1067 | foreach my $p (keys %$privset) { | |
1068 | $privs->{$p} = 1; | |
1069 | } | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | #print "priviledges $user $path = " . Dumper ($privs); | |
1074 | ||
1075 | return $privs; | |
1076 | } | |
1077 | ||
1078 | sub check_permissions { | |
1079 | my ($username, $path, $privlist) = @_; | |
1080 | ||
1081 | $path = normalize_path($path); | |
1082 | my $usercfg = cfs_read_file('user.cfg'); | |
1083 | my $perm = permission($usercfg, $username, $path); | |
1084 | ||
1085 | foreach my $priv (split_list($privlist)) { | |
1086 | return undef if !$perm->{$priv}; | |
1087 | }; | |
1088 | ||
1089 | return 1; | |
1090 | } | |
1091 | ||
1092 | sub remove_vm_access { | |
1093 | my ($vmid) = @_; | |
1094 | my $delVMaccessFn = sub { | |
1095 | my $usercfg = cfs_read_file("user.cfg"); | |
1096 | my $modified; | |
1097 | ||
1098 | if (my $acl = $usercfg->{acl}->{"/vms/$vmid"}) { | |
1099 | delete $usercfg->{acl}->{"/vms/$vmid"}; | |
1100 | $modified = 1; | |
1101 | } | |
1102 | if (my $pool = $usercfg->{vms}->{$vmid}) { | |
1103 | if (my $data = $usercfg->{pools}->{$pool}) { | |
1104 | delete $data->{vms}->{$vmid}; | |
1105 | delete $usercfg->{vms}->{$vmid}; | |
1106 | $modified = 1; | |
1107 | } | |
1108 | } | |
1109 | cfs_write_file("user.cfg", $usercfg) if $modified; | |
1110 | }; | |
1111 | ||
1112 | lock_user_config($delVMaccessFn, "access permissions cleanup for VM $vmid failed"); | |
1113 | } | |
1114 | ||
1115 | sub add_vm_to_pool { | |
1116 | my ($vmid, $pool) = @_; | |
1117 | ||
1118 | my $addVMtoPoolFn = sub { | |
1119 | my $usercfg = cfs_read_file("user.cfg"); | |
1120 | if (my $data = $usercfg->{pools}->{$pool}) { | |
1121 | $data->{vms}->{$vmid} = 1; | |
1122 | $usercfg->{vms}->{$vmid} = $pool; | |
1123 | cfs_write_file("user.cfg", $usercfg); | |
1124 | } | |
1125 | }; | |
1126 | ||
1127 | lock_user_config($addVMtoPoolFn, "can't add VM $vmid to pool '$pool'"); | |
1128 | } | |
1129 | ||
1130 | sub remove_vm_from_pool { | |
1131 | my ($vmid) = @_; | |
1132 | ||
1133 | my $delVMfromPoolFn = sub { | |
1134 | my $usercfg = cfs_read_file("user.cfg"); | |
1135 | if (my $pool = $usercfg->{vms}->{$vmid}) { | |
1136 | if (my $data = $usercfg->{pools}->{$pool}) { | |
1137 | delete $data->{vms}->{$vmid}; | |
1138 | delete $usercfg->{vms}->{$vmid}; | |
1139 | cfs_write_file("user.cfg", $usercfg); | |
1140 | } | |
1141 | } | |
1142 | }; | |
1143 | ||
1144 | lock_user_config($delVMfromPoolFn, "pool cleanup for VM $vmid failed"); | |
1145 | } | |
1146 | ||
1147 | # experimental code for yubico OTP verification | |
1148 | ||
1149 | sub yubico_compute_param_sig { | |
1150 | my ($param, $api_key) = @_; | |
1151 | ||
1152 | my $paramstr = ''; | |
1153 | foreach my $key (sort keys %$param) { | |
1154 | $paramstr .= '&' if $paramstr; | |
1155 | $paramstr .= "$key=$param->{$key}"; | |
1156 | } | |
1157 | ||
1158 | my $sig = uri_escape(encode_base64(Digest::HMAC_SHA1::hmac_sha1($paramstr, decode_base64($api_key || '')), '')); | |
1159 | ||
1160 | return ($paramstr, $sig); | |
1161 | } | |
1162 | ||
1163 | sub yubico_verify_otp { | |
1164 | my ($otp, $keys, $url, $api_id, $api_key, $proxy) = @_; | |
1165 | ||
1166 | die "yubico: missing password\n" if !defined($otp); | |
1167 | die "yubico: missing API ID\n" if !defined($api_id); | |
1168 | die "yubico: missing API KEY\n" if !defined($api_key); | |
1169 | die "yubico: no associated yubico keys\n" if $keys =~ m/^\s+$/; | |
1170 | ||
1171 | die "yubico: wrong OTP lenght\n" if (length($otp) < 32) || (length($otp) > 48); | |
1172 | ||
1173 | # we always use http, because https cert verification always make problem, and | |
1174 | # some proxies does not work with https. | |
1175 | ||
1176 | $url = 'http://api2.yubico.com/wsapi/2.0/verify' if !defined($url); | |
1177 | ||
1178 | my $params = { | |
1179 | nonce => Digest::HMAC_SHA1::hmac_sha1_hex(time(), rand()), | |
1180 | id => $api_id, | |
1181 | otp => uri_escape($otp), | |
1182 | timestamp => 1, | |
1183 | }; | |
1184 | ||
1185 | my ($paramstr, $sig) = yubico_compute_param_sig($params, $api_key); | |
1186 | ||
1187 | $paramstr .= "&h=$sig" if $api_key; | |
1188 | ||
1189 | my $req = HTTP::Request->new('GET' => "$url?$paramstr"); | |
1190 | ||
1191 | my $ua = LWP::UserAgent->new(protocols_allowed => ['http'], timeout => 30); | |
1192 | ||
1193 | if ($proxy) { | |
1194 | $ua->proxy(['http'], $proxy); | |
1195 | } else { | |
1196 | $ua->env_proxy; | |
1197 | } | |
1198 | ||
1199 | my $response = $ua->request($req); | |
1200 | my $code = $response->code; | |
1201 | ||
1202 | if ($code != 200) { | |
1203 | my $msg = $response->message || 'unknown'; | |
1204 | die "Invalid response from server: $code $msg\n"; | |
1205 | } | |
1206 | ||
1207 | my $raw = $response->decoded_content; | |
1208 | ||
1209 | my $result = {}; | |
1210 | foreach my $kvpair (split(/\n/, $raw)) { | |
1211 | chomp $kvpair; | |
1212 | if($kvpair =~ /^\S+=/) { | |
1213 | my ($k, $v) = split(/=/, $kvpair, 2); | |
1214 | $v =~ s/\s//g; | |
1215 | $result->{$k} = $v; | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | my $rsig = $result->{h}; | |
1220 | delete $result->{h}; | |
1221 | ||
1222 | if ($api_key) { | |
1223 | my ($datastr, $vsig) = yubico_compute_param_sig($result, $api_key); | |
1224 | $vsig = uri_unescape($vsig); | |
1225 | die "yubico: result signature verification failed\n" if $rsig ne $vsig; | |
1226 | } | |
1227 | ||
1228 | die "yubico auth failed: $result->{status}\n" if $result->{status} ne 'OK'; | |
1229 | ||
1230 | my $publicid = $result->{publicid} = substr(lc($result->{otp}), 0, 12); | |
1231 | ||
1232 | my $found; | |
1233 | foreach my $k (PVE::Tools::split_list($keys)) { | |
1234 | if ($k eq $publicid) { | |
1235 | $found = 1; | |
1236 | last; | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | die "yubico auth failed: key does not belong to user\n" if !$found; | |
1241 | ||
1242 | return $result; | |
1243 | } | |
1244 | ||
1245 | sub oath_verify_otp { | |
1246 | my ($otp, $keys, $step, $digits) = @_; | |
1247 | ||
1248 | die "oath: missing password\n" if !defined($otp); | |
1249 | die "oath: no associated oath keys\n" if $keys =~ m/^\s+$/; | |
1250 | ||
1251 | $step = 30 if !$step; | |
1252 | $digits = 6 if !$digits; | |
1253 | ||
1254 | my $found; | |
1255 | ||
1256 | my $parser = sub { | |
1257 | my $line = shift; | |
1258 | ||
1259 | if ($line =~ m/^\d{6}$/) { | |
1260 | $found = 1 if $otp eq $line; | |
1261 | } | |
1262 | }; | |
1263 | ||
1264 | foreach my $k (PVE::Tools::split_list($keys)) { | |
1265 | # Note: we generate 3 values to allow small time drift | |
1266 | my $now = localtime(time() - $step); | |
1267 | my $cmd = ['oathtool', '--totp', '--digits', $digits, '-N', $now, '-s', $step, '-w', '2', '-b', $k]; | |
1268 | eval { run_command($cmd, outfunc => $parser, errfunc => sub {}); }; | |
1269 | last if $found; | |
1270 | } | |
1271 | ||
1272 | die "oath auth failed\n" if !$found; | |
1273 | } | |
1274 | ||
1275 | 1; |