PVE/AccessControl.pm

   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
  13 use PVE::OTP;
  14 use PVE::Ticket;
  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 $secret =  &$get_csrfr_secret();
  93
  94     return PVE::Ticket::assemble_csrf_prevention_token ($secret, $username);
  95 }
  96
  97 sub verify_csrf_prevention_token {
  98     my ($username, $token, $noerr) = @_;
  99
 100     my $secret =  &$get_csrfr_secret();
 101
 102     return PVE::Ticket::verify_csrf_prevention_token(
 103         $secret, $username, $token, -300, $ticket_lifetime, $noerr);
 104 }
 105
 106 my $pve_auth_priv_key;
 107 sub get_privkey {
 108
 109     return $pve_auth_priv_key if $pve_auth_priv_key;
 110
 111     my $input = PVE::Tools::file_get_contents($authprivkeyfn);
 112
 113     $pve_auth_priv_key = Crypt::OpenSSL::RSA->new_private_key($input);
 114
 115     return $pve_auth_priv_key;
 116 }
 117
 118 sub assemble_ticket {
 119     my ($username) = @_;
 120
 121     my $rsa_priv = get_privkey();
 122
 123     return PVE::Ticket::assemble_rsa_ticket($rsa_priv, 'PVE', $username);
 124 }
 125
 126 sub verify_ticket {
 127     my ($ticket, $noerr) = @_;
 128
 129     my $rsa_pub = get_pubkey();
 130
 131     my ($username, $age) = PVE::Ticket::verify_rsa_ticket(
 132         $rsa_pub, 'PVE', $ticket, undef, -300, $ticket_lifetime, $noerr);
 133
 134     return undef if $noerr && !defined($username);
 135
 136     return undef if !PVE::Auth::Plugin::verify_username($username, $noerr);
 137
 138     return wantarray ? ($username, $age) : $username;
 139 }
 140
 141 # VNC tickets
 142 # - they do not contain the username in plain text
 143 # - they are restricted to a specific resource path (example: '/vms/100')
 144 sub assemble_vnc_ticket {
 145     my ($username, $path) = @_;
 146
 147     my $rsa_priv = get_privkey();
 148
 149     $path = normalize_path($path);
 150
 151     my $secret_data = "$username:$path";
 152
 153     return PVE::Ticket::assemble_rsa_ticket(
 154         $rsa_priv, 'PVEVNC', undef, $secret_data);
 155 }
 156
 157 sub verify_vnc_ticket {
 158     my ($ticket, $username, $path, $noerr) = @_;
 159
 160     my $rsa_pub = get_pubkey();
 161
 162     my $secret_data = "$username:$path";
 163
 164     return PVE::Ticket::verify_rsa_ticket(
 165         $rsa_pub, 'PVEVNC', $ticket, $secret_data, -20, 40, $noerr);
 166 }
 167
 168 sub assemble_spice_ticket {
 169     my ($username, $vmid, $node) = @_;
 170
 171     my $secret = &$get_csrfr_secret();
 172
 173     return PVE::Ticket::assemble_spice_ticket(
 174         $secret, $username, $vmid, $node);
 175 }
 176
 177
 178 sub verify_spice_connect_url {
 179     my ($connect_str) = @_;
 180
 181     my $secret = &$get_csrfr_secret();
 182
 183     return PVE::Ticket::verify_spice_connect_url($secret, $connect_str);
 184 }
 185
 186 sub read_x509_subject_spice {
 187     my ($filename) = @_;
 188
 189     # read x509 subject
 190     my $bio = Net::SSLeay::BIO_new_file($filename, 'r');
 191     die "Could not open $filename using OpenSSL\n"
 192         if !$bio;
 193
 194     my $x509 = Net::SSLeay::PEM_read_bio_X509($bio);
 195     Net::SSLeay::BIO_free($bio);
 196
 197     die "Could not parse X509 certificate in $filename\n"
 198         if !$x509;
 199
 200     my $nameobj = Net::SSLeay::X509_get_subject_name($x509);
 201     my $subject = Net::SSLeay::X509_NAME_oneline($nameobj);
 202     Net::SSLeay::X509_free($x509);
 203
 204     # remote-viewer wants comma as seperator (not '/')
 205     $subject =~ s!^/!!;
 206     $subject =~ s!/(\w+=)!,$1!g;
 207
 208     return $subject;
 209 }
 210
 211 # helper to generate SPICE remote-viewer configuration
 212 sub remote_viewer_config {
 213     my ($authuser, $vmid, $node, $proxy, $title, $port) = @_;
 214
 215     if (!$proxy) {
 216         my $host = `hostname -f` || PVE::INotify::nodename();
 217         chomp $host;
 218         $proxy = $host;
 219     }
 220
 221     my ($ticket, $proxyticket) = assemble_spice_ticket($authuser, $vmid, $node);
 222
 223     my $filename = "/etc/pve/local/pve-ssl.pem";
 224     my $subject = read_x509_subject_spice($filename);
 225
 226     my $cacert = PVE::Tools::file_get_contents("/etc/pve/pve-root-ca.pem", 8192);
 227     $cacert =~ s/\n/\\n/g;
 228
 229     $proxy = "[$proxy]" if Net::IP::ip_is_ipv6($proxy);
 230     my $config = {
 231         'secure-attention' => "Ctrl+Alt+Ins",
 232         'toggle-fullscreen' => "Shift+F11",
 233         'release-cursor' => "Ctrl+Alt+R",
 234         type => 'spice',
 235         title => $title,
 236         host => $proxyticket, # this breaks tls hostname verification, so we need to use 'host-subject'
 237         proxy => "http://$proxy:3128",
 238         'tls-port' => $port,
 239         'host-subject' => $subject,
 240         ca => $cacert,
 241         password => $ticket,
 242         'delete-this-file' => 1,
 243     };
 244
 245     return ($ticket, $proxyticket, $config);
 246 }
 247
 248 sub check_user_exist {
 249     my ($usercfg, $username, $noerr) = @_;
 250
 251     $username = PVE::Auth::Plugin::verify_username($username, $noerr);
 252     return undef if !$username;
 253
 254     return $usercfg->{users}->{$username} if $usercfg && $usercfg->{users}->{$username};
 255
 256     die "no such user ('$username')\n" if !$noerr;
 257
 258     return undef;
 259 }
 260
 261 sub check_user_enabled {
 262     my ($usercfg, $username, $noerr) = @_;
 263
 264     my $data = check_user_exist($usercfg, $username, $noerr);
 265     return undef if !$data;
 266
 267     return 1 if $data->{enable};
 268
 269     die "user '$username' is disabled\n" if !$noerr;
 270
 271     return undef;
 272 }
 273
 274 sub verify_one_time_pw {
 275     my ($usercfg, $username, $tfa_cfg, $otp) = @_;
 276
 277     my $type = $tfa_cfg->{type};
 278
 279     die "missing one time password for two-factor authentication '$type'\n" if !$otp;
 280
 281     # fixme: proxy support?
 282     my $proxy;
 283
 284     if ($type eq 'yubico') {
 285         my $keys = $usercfg->{users}->{$username}->{keys};
 286         PVE::OTP::yubico_verify_otp($otp, $keys, $tfa_cfg->{url},
 287                                     $tfa_cfg->{id}, $tfa_cfg->{key}, $proxy);
 288     } elsif ($type eq 'oath') {
 289         my $keys = $usercfg->{users}->{$username}->{keys};
 290         PVE::OTP::oath_verify_otp($otp, $keys, $tfa_cfg->{step}, $tfa_cfg->{digits});
 291     } else {
 292         die "unknown tfa type '$type'\n";
 293     }
 294 }
 295
 296 # password should be utf8 encoded
 297 # Note: some plugins delay/sleep if auth fails
 298 sub authenticate_user {
 299     my ($username, $password, $otp) = @_;
 300
 301     die "no username specified\n" if !$username;
 302
 303     my ($ruid, $realm);
 304
 305     ($username, $ruid, $realm) = PVE::Auth::Plugin::verify_username($username);
 306
 307     my $usercfg = cfs_read_file('user.cfg');
 308
 309     check_user_enabled($usercfg, $username);
 310
 311     my $ctime = time();
 312     my $expire = $usercfg->{users}->{$username}->{expire};
 313
 314     die "account expired\n" if $expire && ($expire < $ctime);
 315
 316     my $domain_cfg = cfs_read_file('domains.cfg');
 317
 318     my $cfg = $domain_cfg->{ids}->{$realm};
 319     die "auth domain '$realm' does not exists\n" if !$cfg;
 320     my $plugin = PVE::Auth::Plugin->lookup($cfg->{type});
 321     $plugin->authenticate_user($cfg, $realm, $ruid, $password);
 322
 323     if ($cfg->{tfa}) {
 324         my $tfa_cfg = PVE::Auth::Plugin::parse_tfa_config($cfg->{tfa});
 325         verify_one_time_pw($usercfg, $username, $tfa_cfg, $otp);
 326     }
 327
 328     return $username;
 329 }
 330
 331 sub domain_set_password {
 332     my ($realm, $username, $password) = @_;
 333
 334     die "no auth domain specified" if !$realm;
 335
 336     my $domain_cfg = cfs_read_file('domains.cfg');
 337
 338     my $cfg = $domain_cfg->{ids}->{$realm};
 339     die "auth domain '$realm' does not exist\n" if !$cfg;
 340     my $plugin = PVE::Auth::Plugin->lookup($cfg->{type});
 341     $plugin->store_password($cfg, $realm, $username, $password);
 342 }
 343
 344 sub add_user_group {
 345     my ($username, $usercfg, $group) = @_;
 346
 347     $usercfg->{users}->{$username}->{groups}->{$group} = 1;
 348     $usercfg->{groups}->{$group}->{users}->{$username} = 1;
 349 }
 350
 351 sub delete_user_group {
 352     my ($username, $usercfg) = @_;
 353
 354     foreach my $group (keys %{$usercfg->{groups}}) {
 355
 356         delete ($usercfg->{groups}->{$group}->{users}->{$username})
 357             if $usercfg->{groups}->{$group}->{users}->{$username};
 358     }
 359 }
 360
 361 sub delete_user_acl {
 362     my ($username, $usercfg) = @_;
 363
 364     foreach my $acl (keys %{$usercfg->{acl}}) {
 365
 366         delete ($usercfg->{acl}->{$acl}->{users}->{$username})
 367             if $usercfg->{acl}->{$acl}->{users}->{$username};
 368     }
 369 }
 370
 371 sub delete_group_acl {
 372     my ($group, $usercfg) = @_;
 373
 374     foreach my $acl (keys %{$usercfg->{acl}}) {
 375
 376         delete ($usercfg->{acl}->{$acl}->{groups}->{$group})
 377             if $usercfg->{acl}->{$acl}->{groups}->{$group};
 378     }
 379 }
 380
 381 sub delete_pool_acl {
 382     my ($pool, $usercfg) = @_;
 383
 384     my $path = "/pool/$pool";
 385
 386     delete ($usercfg->{acl}->{$path})
 387 }
 388
 389 # we automatically create some predefined roles by splitting privs
 390 # into 3 groups (per category)
 391 # root: only root is allowed to do that
 392 # admin: an administrator can to that
 393 # user: a normal user/customer can to that
 394 my $privgroups = {
 395     VM => {
 396         root => [],
 397         admin => [
 398             'VM.Config.Disk',
 399             'VM.Config.CPU',
 400             'VM.Config.Memory',
 401             'VM.Config.Network',
 402             'VM.Config.HWType',
 403             'VM.Config.Options', # covers all other things
 404             'VM.Allocate',
 405             'VM.Clone',
 406             'VM.Migrate',
 407             'VM.Monitor',
 408             'VM.Snapshot',
 409         ],
 410         user => [
 411             'VM.Config.CDROM', # change CDROM media
 412             'VM.Console',
 413             'VM.Backup',
 414             'VM.PowerMgmt',
 415         ],
 416         audit => [
 417             'VM.Audit',
 418         ],
 419     },
 420     Sys => {
 421         root => [
 422             'Sys.PowerMgmt',
 423             'Sys.Modify', # edit/change node settings
 424         ],
 425         admin => [
 426             'Permissions.Modify',
 427             'Sys.Console',
 428             'Sys.Syslog',
 429         ],
 430         user => [],
 431         audit => [
 432             'Sys.Audit',
 433         ],
 434     },
 435     Datastore => {
 436         root => [],
 437         admin => [
 438             'Datastore.Allocate',
 439             'Datastore.AllocateTemplate',
 440         ],
 441         user => [
 442             'Datastore.AllocateSpace',
 443         ],
 444         audit => [
 445             'Datastore.Audit',
 446         ],
 447     },
 448     User => {
 449         root => [
 450             'Realm.Allocate',
 451         ],
 452         admin => [
 453             'User.Modify',
 454             'Group.Allocate', # edit/change group settings
 455             'Realm.AllocateUser',
 456         ],
 457         user => [],
 458         audit => [],
 459     },
 460     Pool => {
 461         root => [],
 462         admin => [
 463             'Pool.Allocate', # create/delete pools
 464         ],
 465         user => [],
 466         audit => [],
 467     },
 468 };
 469
 470 my $valid_privs = {};
 471
 472 my $special_roles = {
 473     'NoAccess' => {}, # no privileges
 474     'Administrator' => $valid_privs, # all privileges
 475 };
 476
 477 sub create_roles {
 478
 479     foreach my $cat (keys %$privgroups) {
 480         my $cd = $privgroups->{$cat};
 481         foreach my $p (@{$cd->{root}}, @{$cd->{admin}},
 482                        @{$cd->{user}}, @{$cd->{audit}}) {
 483             $valid_privs->{$p} = 1;
 484         }
 485         foreach my $p (@{$cd->{admin}}, @{$cd->{user}}, @{$cd->{audit}}) {
 486
 487             $special_roles->{"PVE${cat}Admin"}->{$p} = 1;
 488             $special_roles->{"PVEAdmin"}->{$p} = 1;
 489         }
 490         if (scalar(@{$cd->{user}})) {
 491             foreach my $p (@{$cd->{user}}, @{$cd->{audit}}) {
 492                 $special_roles->{"PVE${cat}User"}->{$p} = 1;
 493             }
 494         }
 495         foreach my $p (@{$cd->{audit}}) {
 496             $special_roles->{"PVEAuditor"}->{$p} = 1;
 497         }
 498     }
 499
 500     $special_roles->{"PVETemplateUser"} = { 'VM.Clone' => 1, 'VM.Audit' => 1 };
 501 };
 502
 503 create_roles();
 504
 505 sub add_role_privs {
 506     my ($role, $usercfg, $privs) = @_;
 507
 508     return if !$privs;
 509
 510     die "role '$role' does not exist\n" if !$usercfg->{roles}->{$role};
 511
 512     foreach my $priv (split_list($privs)) {
 513         if (defined ($valid_privs->{$priv})) {
 514             $usercfg->{roles}->{$role}->{$priv} = 1;
 515         } else {
 516             die "invalid privilege '$priv'\n";
 517         }
 518     }
 519 }
 520
 521 sub normalize_path {
 522     my $path = shift;
 523
 524     $path =~ s|/+|/|g;
 525
 526     $path =~ s|/$||;
 527
 528     $path = '/' if !$path;
 529
 530     $path = "/$path" if $path !~ m|^/|;
 531
 532     return undef if $path !~ m|^[[:alnum:]\.\-\_\/]+$|;
 533
 534     return $path;
 535 }
 536
 537
 538 PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname);
 539 sub verify_groupname {
 540     my ($groupname, $noerr) = @_;
 541
 542     if ($groupname !~ m/^[A-Za-z0-9\.\-_]+$/) {
 543
 544         die "group name '$groupname' contains invalid characters\n" if !$noerr;
 545
 546         return undef;
 547     }
 548
 549     return $groupname;
 550 }
 551
 552 PVE::JSONSchema::register_format('pve-roleid', \&verify_rolename);
 553 sub verify_rolename {
 554     my ($rolename, $noerr) = @_;
 555
 556     if ($rolename !~ m/^[A-Za-z0-9\.\-_]+$/) {
 557
 558         die "role name '$rolename' contains invalid characters\n" if !$noerr;
 559
 560         return undef;
 561     }
 562
 563     return $rolename;
 564 }
 565
 566 PVE::JSONSchema::register_format('pve-poolid', \&verify_groupname);
 567 sub verify_poolname {
 568     my ($poolname, $noerr) = @_;
 569
 570     if ($poolname !~ m/^[A-Za-z0-9\.\-_]+$/) {
 571
 572         die "pool name '$poolname' contains invalid characters\n" if !$noerr;
 573
 574         return undef;
 575     }
 576
 577     return $poolname;
 578 }
 579
 580 PVE::JSONSchema::register_format('pve-priv', \&verify_privname);
 581 sub verify_privname {
 582     my ($priv, $noerr) = @_;
 583
 584     if (!$valid_privs->{$priv}) {
 585         die "invalid privilege '$priv'\n" if !$noerr;
 586
 587         return undef;
 588     }
 589
 590     return $priv;
 591 }
 592
 593 sub userconfig_force_defaults {
 594     my ($cfg) = @_;
 595
 596     foreach my $r (keys %$special_roles) {
 597         $cfg->{roles}->{$r} = $special_roles->{$r};
 598     }
 599
 600     # add root user if not exists
 601     if (!$cfg->{users}->{'root@pam'}) {
 602         $cfg->{users}->{'root@pam'}->{enable} = 1;
 603     }
 604 }
 605
 606 sub parse_user_config {
 607     my ($filename, $raw) = @_;
 608
 609     my $cfg = {};
 610
 611     userconfig_force_defaults($cfg);
 612
 613     $raw = '' if !defined($raw);
 614     while ($raw =~ /^\s*(.+?)\s*$/gm) {
 615         my $line = $1;
 616         my @data;
 617
 618         foreach my $d (split (/:/, $line)) {
 619             $d =~ s/^\s+//;
 620             $d =~ s/\s+$//;
 621             push @data, $d
 622         }
 623
 624         my $et = shift @data;
 625
 626         if ($et eq 'user') {
 627             my ($user, $enable, $expire, $firstname, $lastname, $email, $comment, $keys) = @data;
 628
 629             my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1);
 630             if (!$realm) {
 631                 warn "user config - ignore user '$user' - invalid user name\n";
 632                 next;
 633             }
 634
 635             $enable = $enable ? 1 : 0;
 636
 637             $expire = 0 if !$expire;
 638
 639             if ($expire !~ m/^\d+$/) {
 640                 warn "user config - ignore user '$user' - (illegal characters in expire '$expire')\n";
 641                 next;
 642             }
 643             $expire = int($expire);
 644
 645             #if (!verify_groupname ($group, 1)) {
 646             #    warn "user config - ignore user '$user' - invalid characters in group name\n";
 647             #    next;
 648             #}
 649
 650             $cfg->{users}->{$user} = {
 651                 enable => $enable,
 652                 # group => $group,
 653             };
 654             $cfg->{users}->{$user}->{firstname} = PVE::Tools::decode_text($firstname) if $firstname;
 655             $cfg->{users}->{$user}->{lastname} = PVE::Tools::decode_text($lastname) if $lastname;
 656             $cfg->{users}->{$user}->{email} = $email;
 657             $cfg->{users}->{$user}->{comment} = PVE::Tools::decode_text($comment) if $comment;
 658             $cfg->{users}->{$user}->{expire} = $expire;
 659             # keys: allowed yubico key ids or oath secrets (base32 encoded)
 660             $cfg->{users}->{$user}->{keys} = $keys if $keys;
 661
 662             #$cfg->{users}->{$user}->{groups}->{$group} = 1;
 663             #$cfg->{groups}->{$group}->{$user} = 1;
 664
 665         } elsif ($et eq 'group') {
 666             my ($group, $userlist, $comment) = @data;
 667
 668             if (!verify_groupname($group, 1)) {
 669                 warn "user config - ignore group '$group' - invalid characters in group name\n";
 670                 next;
 671             }
 672
 673             # make sure to add the group (even if there are no members)
 674             $cfg->{groups}->{$group} = { users => {} } if !$cfg->{groups}->{$group};
 675
 676             $cfg->{groups}->{$group}->{comment} = PVE::Tools::decode_text($comment) if $comment;
 677
 678             foreach my $user (split_list($userlist)) {
 679
 680                 if (!PVE::Auth::Plugin::verify_username($user, 1)) {
 681                     warn "user config - ignore invalid group member '$user'\n";
 682                     next;
 683                 }
 684
 685                 if ($cfg->{users}->{$user}) { # user exists
 686                     $cfg->{users}->{$user}->{groups}->{$group} = 1;
 687                     $cfg->{groups}->{$group}->{users}->{$user} = 1;
 688                 } else {
 689                     warn "user config - ignore invalid group member '$user'\n";
 690                 }
 691             }
 692
 693         } elsif ($et eq 'role') {
 694             my ($role, $privlist) = @data;
 695
 696             if (!verify_rolename($role, 1)) {
 697                 warn "user config - ignore role '$role' - invalid characters in role name\n";
 698                 next;
 699             }
 700
 701             # make sure to add the role (even if there are no privileges)
 702             $cfg->{roles}->{$role} = {} if !$cfg->{roles}->{$role};
 703
 704             foreach my $priv (split_list($privlist)) {
 705                 if (defined ($valid_privs->{$priv})) {
 706                     $cfg->{roles}->{$role}->{$priv} = 1;
 707                 } else {
 708                     warn "user config - ignore invalid priviledge '$priv'\n";
 709                 }
 710             }
 711
 712         } elsif ($et eq 'acl') {
 713             my ($propagate, $pathtxt, $uglist, $rolelist) = @data;
 714
 715             if (my $path = normalize_path($pathtxt)) {
 716                 foreach my $role (split_list($rolelist)) {
 717
 718                     if (!verify_rolename($role, 1)) {
 719                         warn "user config - ignore invalid role name '$role' in acl\n";
 720                         next;
 721                     }
 722
 723                     foreach my $ug (split_list($uglist)) {
 724                         if ($ug =~ m/^@(\S+)$/) {
 725                             my $group = $1;
 726                             if ($cfg->{groups}->{$group}) { # group exists
 727                                 $cfg->{acl}->{$path}->{groups}->{$group}->{$role} = $propagate;
 728                             } else {
 729                                 warn "user config - ignore invalid acl group '$group'\n";
 730                             }
 731                         } elsif (PVE::Auth::Plugin::verify_username($ug, 1)) {
 732                             if ($cfg->{users}->{$ug}) { # user exists
 733                                 $cfg->{acl}->{$path}->{users}->{$ug}->{$role} = $propagate;
 734                             } else {
 735                                 warn "user config - ignore invalid acl member '$ug'\n";
 736                             }
 737                         } else {
 738                             warn "user config - invalid user/group '$ug' in acl\n";
 739                         }
 740                     }
 741                 }
 742             } else {
 743                 warn "user config - ignore invalid path in acl '$pathtxt'\n";
 744             }
 745         } elsif ($et eq 'pool') {
 746             my ($pool, $comment, $vmlist, $storelist) = @data;
 747
 748             if (!verify_poolname($pool, 1)) {
 749                 warn "user config - ignore pool '$pool' - invalid characters in pool name\n";
 750                 next;
 751             }
 752
 753             # make sure to add the pool (even if there are no members)
 754             $cfg->{pools}->{$pool} = { vms => {}, storage => {} } if !$cfg->{pools}->{$pool};
 755
 756             $cfg->{pools}->{$pool}->{comment} = PVE::Tools::decode_text($comment) if $comment;
 757
 758             foreach my $vmid (split_list($vmlist)) {
 759                 if ($vmid !~ m/^\d+$/) {
 760                     warn "user config - ignore invalid vmid '$vmid' in pool '$pool'\n";
 761                     next;
 762                 }
 763                 $vmid = int($vmid);
 764
 765                 if ($cfg->{vms}->{$vmid}) {
 766                     warn "user config - ignore duplicate vmid '$vmid' in pool '$pool'\n";
 767                     next;
 768                 }
 769
 770                 $cfg->{pools}->{$pool}->{vms}->{$vmid} = 1;
 771
 772                 # record vmid ==> pool relation
 773                 $cfg->{vms}->{$vmid} = $pool;
 774             }
 775
 776             foreach my $storeid (split_list($storelist)) {
 777                 if ($storeid !~ m/^[a-z][a-z0-9\-\_\.]*[a-z0-9]$/i) {
 778                     warn "user config - ignore invalid storage '$storeid' in pool '$pool'\n";
 779                     next;
 780                 }
 781                 $cfg->{pools}->{$pool}->{storage}->{$storeid} = 1;
 782             }
 783         } else {
 784             warn "user config - ignore config line: $line\n";
 785         }
 786     }
 787
 788     userconfig_force_defaults($cfg);
 789
 790     return $cfg;
 791 }
 792
 793 sub write_user_config {
 794     my ($filename, $cfg) = @_;
 795
 796     my $data = '';
 797
 798     foreach my $user (keys %{$cfg->{users}}) {
 799         my $d = $cfg->{users}->{$user};
 800         my $firstname = $d->{firstname} ? PVE::Tools::encode_text($d->{firstname}) : '';
 801         my $lastname = $d->{lastname} ? PVE::Tools::encode_text($d->{lastname}) : '';
 802         my $email = $d->{email} || '';
 803         my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : '';
 804         my $expire = int($d->{expire} || 0);
 805         my $enable = $d->{enable} ? 1 : 0;
 806         my $keys = $d->{keys} ? $d->{keys} : '';
 807         $data .= "user:$user:$enable:$expire:$firstname:$lastname:$email:$comment:$keys:\n";
 808     }
 809
 810     $data .= "\n";
 811
 812     foreach my $group (keys %{$cfg->{groups}}) {
 813         my $d = $cfg->{groups}->{$group};
 814         my $list = join (',', keys %{$d->{users}});
 815         my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : '';
 816         $data .= "group:$group:$list:$comment:\n";
 817     }
 818
 819     $data .= "\n";
 820
 821     foreach my $pool (keys %{$cfg->{pools}}) {
 822         my $d = $cfg->{pools}->{$pool};
 823         my $vmlist = join (',', keys %{$d->{vms}});
 824         my $storelist = join (',', keys %{$d->{storage}});
 825         my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : '';
 826         $data .= "pool:$pool:$comment:$vmlist:$storelist:\n";
 827     }
 828
 829     $data .= "\n";
 830
 831     foreach my $role (keys %{$cfg->{roles}}) {
 832         next if $special_roles->{$role};
 833
 834         my $d = $cfg->{roles}->{$role};
 835         my $list = join (',', keys %$d);
 836         $data .= "role:$role:$list:\n";
 837     }
 838
 839     $data .= "\n";
 840
 841     foreach my $path (sort keys %{$cfg->{acl}}) {
 842         my $d = $cfg->{acl}->{$path};
 843
 844         my $ra = {};
 845
 846         foreach my $group (keys %{$d->{groups}}) {
 847             my $l0 = '';
 848             my $l1 = '';
 849             foreach my $role (sort keys %{$d->{groups}->{$group}}) {
 850                 my $propagate = $d->{groups}->{$group}->{$role};
 851                 if ($propagate) {
 852                     $l1 .= ',' if $l1;
 853                     $l1 .= $role;
 854                 } else {
 855                     $l0 .= ',' if $l0;
 856                     $l0 .= $role;
 857                 }
 858             }
 859             $ra->{0}->{$l0}->{"\@$group"} = 1 if $l0;
 860             $ra->{1}->{$l1}->{"\@$group"} = 1 if $l1;
 861         }
 862
 863         foreach my $user (keys %{$d->{users}}) {
 864             # no need to save, because root is always 'Administrator'
 865             next if $user eq 'root@pam';
 866
 867             my $l0 = '';
 868             my $l1 = '';
 869             foreach my $role (sort keys %{$d->{users}->{$user}}) {
 870                 my $propagate = $d->{users}->{$user}->{$role};
 871                 if ($propagate) {
 872                     $l1 .= ',' if $l1;
 873                     $l1 .= $role;
 874                 } else {
 875                     $l0 .= ',' if $l0;
 876                     $l0 .= $role;
 877                 }
 878             }
 879             $ra->{0}->{$l0}->{$user} = 1 if $l0;
 880             $ra->{1}->{$l1}->{$user} = 1 if $l1;
 881         }
 882
 883         foreach my $rolelist (sort keys %{$ra->{0}}) {
 884             my $uglist = join (',', keys %{$ra->{0}->{$rolelist}});
 885             $data .= "acl:0:$path:$uglist:$rolelist:\n";
 886         }
 887         foreach my $rolelist (sort keys %{$ra->{1}}) {
 888             my $uglist = join (',', keys %{$ra->{1}->{$rolelist}});
 889             $data .= "acl:1:$path:$uglist:$rolelist:\n";
 890         }
 891     }
 892
 893     return $data;
 894 }
 895
 896 sub roles {
 897     my ($cfg, $user, $path) = @_;
 898
 899     # NOTE: we do not consider pools here.
 900     # You need to use $rpcenv->roles() instead if you want that.
 901
 902     return 'Administrator' if $user eq 'root@pam'; # root can do anything
 903
 904     my $perm = {};
 905
 906     foreach my $p (sort keys %{$cfg->{acl}}) {
 907         my $final = ($path eq $p);
 908
 909         next if !(($p eq '/') || $final || ($path =~ m|^$p/|));
 910
 911         my $acl = $cfg->{acl}->{$p};
 912
 913         #print "CHECKACL $path $p\n";
 914         #print "ACL $path = " . Dumper ($acl);
 915
 916         if (my $ri = $acl->{users}->{$user}) {
 917             my $new;
 918             foreach my $role (keys %$ri) {
 919                 my $propagate = $ri->{$role};
 920                 if ($final || $propagate) {
 921                     #print "APPLY ROLE $p $user $role\n";
 922                     $new = {} if !$new;
 923                     $new->{$role} = 1;
 924                 }
 925             }
 926             if ($new) {
 927                 $perm = $new; # overwrite previous settings
 928                 next; # user privs always override group privs
 929             }
 930         }
 931
 932         my $new;
 933         foreach my $g (keys %{$acl->{groups}}) {
 934             next if !$cfg->{groups}->{$g}->{users}->{$user};
 935             if (my $ri = $acl->{groups}->{$g}) {
 936                 foreach my $role (keys %$ri) {
 937                     my $propagate = $ri->{$role};
 938                     if ($final || $propagate) {
 939                         #print "APPLY ROLE $p \@$g $role\n";
 940                         $new = {} if !$new;
 941                         $new->{$role} = 1;
 942                     }
 943                 }
 944             }
 945         }
 946         if ($new) {
 947             $perm = $new; # overwrite previous settings
 948             next;
 949         }
 950     }
 951
 952     return ('NoAccess') if defined ($perm->{NoAccess});
 953     #return () if defined ($perm->{NoAccess});
 954
 955     #print "permission $user $path = " . Dumper ($perm);
 956
 957     my @ra = keys %$perm;
 958
 959     #print "roles $user $path = " . join (',', @ra) . "\n";
 960
 961     return @ra;
 962 }
 963
 964 sub permission {
 965     my ($cfg, $user, $path) = @_;
 966
 967     $user = PVE::Auth::Plugin::verify_username($user, 1);
 968     return {} if !$user;
 969
 970     my @ra = roles($cfg, $user, $path);
 971
 972     my $privs = {};
 973
 974     foreach my $role (@ra) {
 975         if (my $privset = $cfg->{roles}->{$role}) {
 976             foreach my $p (keys %$privset) {
 977                 $privs->{$p} = 1;
 978             }
 979         }
 980     }
 981
 982     #print "priviledges $user $path = " . Dumper ($privs);
 983
 984     return $privs;
 985 }
 986
 987 sub check_permissions {
 988     my ($username, $path, $privlist) = @_;
 989
 990     $path = normalize_path($path);
 991     my $usercfg = cfs_read_file('user.cfg');
 992     my $perm = permission($usercfg, $username, $path);
 993
 994     foreach my $priv (split_list($privlist)) {
 995         return undef if !$perm->{$priv};
 996     };
 997
 998     return 1;
 999 }
1000
1001 sub remove_vm_access {
1002     my ($vmid) = @_;
1003     my $delVMaccessFn = sub {
1004         my $usercfg = cfs_read_file("user.cfg");
1005         my $modified;
1006
1007         if (my $acl = $usercfg->{acl}->{"/vms/$vmid"}) {
1008             delete $usercfg->{acl}->{"/vms/$vmid"};
1009             $modified = 1;
1010         }
1011         if (my $pool = $usercfg->{vms}->{$vmid}) {
1012             if (my $data = $usercfg->{pools}->{$pool}) {
1013                 delete $data->{vms}->{$vmid};
1014                 delete $usercfg->{vms}->{$vmid};
1015                 $modified = 1;
1016             }
1017         }
1018         cfs_write_file("user.cfg", $usercfg) if $modified;
1019     };
1020
1021     lock_user_config($delVMaccessFn, "access permissions cleanup for VM $vmid failed");
1022 }
1023
1024 sub remove_storage_access {
1025     my ($storeid) = @_;
1026
1027     my $deleteStorageAccessFn = sub {
1028         my $usercfg = cfs_read_file("user.cfg");
1029         my $modified;
1030
1031         if (my $storage = $usercfg->{acl}->{"/storage/$storeid"}) {
1032             delete $usercfg->{acl}->{"/storage/$storeid"};
1033             $modified = 1;
1034         }
1035         foreach my $pool (keys %{$usercfg->{pools}}) {
1036             delete $usercfg->{pools}->{$pool}->{storage}->{$storeid};
1037             $modified = 1;
1038         }
1039         cfs_write_file("user.cfg", $usercfg) if $modified;
1040     };
1041
1042     lock_user_config($deleteStorageAccessFn,
1043                      "access permissions cleanup for storage $storeid failed");
1044 }
1045
1046 sub add_vm_to_pool {
1047     my ($vmid, $pool) = @_;
1048
1049     my $addVMtoPoolFn = sub {
1050         my $usercfg = cfs_read_file("user.cfg");
1051         if (my $data = $usercfg->{pools}->{$pool}) {
1052             $data->{vms}->{$vmid} = 1;
1053             $usercfg->{vms}->{$vmid} = $pool;
1054             cfs_write_file("user.cfg", $usercfg);
1055         }
1056     };
1057
1058     lock_user_config($addVMtoPoolFn, "can't add VM $vmid to pool '$pool'");
1059 }
1060
1061 sub remove_vm_from_pool {
1062     my ($vmid) = @_;
1063
1064     my $delVMfromPoolFn = sub {
1065         my $usercfg = cfs_read_file("user.cfg");
1066         if (my $pool = $usercfg->{vms}->{$vmid}) {
1067             if (my $data = $usercfg->{pools}->{$pool}) {
1068                 delete $data->{vms}->{$vmid};
1069                 delete $usercfg->{vms}->{$vmid};
1070                 cfs_write_file("user.cfg", $usercfg);
1071             }
1072         }
1073     };
1074
1075     lock_user_config($delVMfromPoolFn, "pool cleanup for VM $vmid failed");
1076 }
1077
1078 # bash completion helpers
1079
1080 sub complete_username {
1081
1082     my $user_cfg = cfs_read_file('user.cfg');
1083
1084     return [ keys %{$user_cfg->{users}} ];
1085 }
1086
1087 sub complete_group {
1088
1089     my $user_cfg = cfs_read_file('user.cfg');
1090
1091     return [ keys %{$user_cfg->{groups}} ];
1092 }
1093
1094 sub complete_realm {
1095
1096     my $domain_cfg = cfs_read_file('domains.cfg');
1097
1098     return [ keys %{$domain_cfg->{ids}} ];
1099 }
1100
1101 1;