package PVE::AccessControl; use strict; use warnings; use Encode; use Crypt::OpenSSL::Random; use Crypt::OpenSSL::RSA; use Net::SSLeay; use MIME::Base64; use Digest::SHA; use PVE::Tools qw(run_command lock_file file_get_contents split_list safe_print); use PVE::Cluster qw(cfs_register_file cfs_read_file cfs_write_file cfs_lock_file); use PVE::JSONSchema; use PVE::Auth::Plugin; use PVE::Auth::AD; use PVE::Auth::LDAP; use PVE::Auth::PVE; use PVE::Auth::PAM; use Data::Dumper; # fixme: remove # load and initialize all plugins PVE::Auth::AD->register(); PVE::Auth::LDAP->register(); PVE::Auth::PVE->register(); PVE::Auth::PAM->register(); PVE::Auth::Plugin->init(); # $authdir must be writable by root only! my $confdir = "/etc/pve"; my $authdir = "$confdir/priv"; my $authprivkeyfn = "$authdir/authkey.key"; my $authpubkeyfn = "$confdir/authkey.pub"; my $pve_www_key_fn = "$confdir/pve-www.key"; my $ticket_lifetime = 3600*2; # 2 hours Crypt::OpenSSL::RSA->import_random_seed(); cfs_register_file('user.cfg', \&parse_user_config, \&write_user_config); sub verify_username { PVE::Auth::Plugin::verify_username(@_); } sub pve_verify_realm { PVE::Auth::Plugin::pve_verify_realm(@_); } sub lock_user_config { my ($code, $errmsg) = @_; cfs_lock_file("user.cfg", undef, $code); if (my $err = $@) { $errmsg ? die "$errmsg: $err" : die $err; } } my $pve_auth_pub_key; sub get_pubkey { return $pve_auth_pub_key if $pve_auth_pub_key; my $input = PVE::Tools::file_get_contents($authpubkeyfn); $pve_auth_pub_key = Crypt::OpenSSL::RSA->new_public_key($input); return $pve_auth_pub_key; } my $csrf_prevention_secret; my $get_csrfr_secret = sub { if (!$csrf_prevention_secret) { my $input = PVE::Tools::file_get_contents($pve_www_key_fn); $csrf_prevention_secret = Digest::SHA::sha1_base64($input); } return $csrf_prevention_secret; }; sub assemble_csrf_prevention_token { my ($username) = @_; my $timestamp = sprintf("%08X", time()); my $digest = Digest::SHA::sha1_base64("$timestamp:$username", &$get_csrfr_secret()); return "$timestamp:$digest"; } sub verify_csrf_prevention_token { my ($username, $token, $noerr) = @_; if ($token =~ m/^([A-Z0-9]{8}):(\S+)$/) { my $sig = $2; my $timestamp = $1; my $ttime = hex($timestamp); my $digest = Digest::SHA::sha1_base64("$timestamp:$username", &$get_csrfr_secret()); my $age = time() - $ttime; return if ($digest eq $sig) && ($age > -300) && ($age < $ticket_lifetime); } die "Permission denied - invalid csrf token\n" if !$noerr; return undef; } my $pve_auth_priv_key; sub get_privkey { return $pve_auth_priv_key if $pve_auth_priv_key; my $input = PVE::Tools::file_get_contents($authprivkeyfn); $pve_auth_priv_key = Crypt::OpenSSL::RSA->new_private_key($input); return $pve_auth_priv_key; } sub assemble_ticket { my ($username) = @_; my $rsa_priv = get_privkey(); my $timestamp = sprintf("%08X", time()); my $plain = "PVE:$username:$timestamp"; my $ticket = $plain . "::" . encode_base64($rsa_priv->sign($plain), ''); return $ticket; } sub verify_ticket { my ($ticket, $noerr) = @_; if ($ticket && $ticket =~ m/^(PVE:\S+)::([^:\s]+)$/) { my $plain = $1; my $sig = $2; my $rsa_pub = get_pubkey(); if ($rsa_pub->verify($plain, decode_base64($sig))) { if ($plain =~ m/^PVE:(\S+):([A-Z0-9]{8})$/) { my $username = $1; my $timestamp = $2; my $ttime = hex($timestamp); my $age = time() - $ttime; if (PVE::Auth::Plugin::verify_username($username, 1) && ($age > -300) && ($age < $ticket_lifetime)) { return wantarray ? ($username, $age) : $username; } } } } die "permission denied - invalid ticket\n" if !$noerr; return undef; } # VNC tickets # - they do not contain the username in plain text # - they are restricted to a specific resource path (example: '/vms/100') sub assemble_vnc_ticket { my ($username, $path) = @_; my $rsa_priv = get_privkey(); my $timestamp = sprintf("%08X", time()); my $plain = "PVEVNC:$timestamp"; $path = normalize_path($path); my $full = "$plain:$username:$path"; my $ticket = $plain . "::" . encode_base64($rsa_priv->sign($full), ''); return $ticket; } sub verify_vnc_ticket { my ($ticket, $username, $path, $noerr) = @_; if ($ticket && $ticket =~ m/^(PVEVNC:\S+)::([^:\s]+)$/) { my $plain = $1; my $sig = $2; my $full = "$plain:$username:$path"; my $rsa_pub = get_pubkey(); # Note: sign only match if $username and $path is correct if ($rsa_pub->verify($full, decode_base64($sig))) { if ($plain =~ m/^PVEVNC:([A-Z0-9]{8})$/) { my $ttime = hex($1); my $age = time() - $ttime; if (($age > -20) && ($age < 40)) { return 1; } } } } die "permission denied - invalid vnc ticket\n" if !$noerr; return undef; } sub assemble_spice_ticket { my ($username, $vmid, $node) = @_; my $rsa_priv = get_privkey(); my $timestamp = sprintf("%08x", time()); my $randomstr = "PVESPICE:$timestamp:$vmid:$node:" . rand(10); # this should be uses as one-time password # max length is 60 chars (spice limit) # we pass this to qemu set_pasword and limit lifetime there # keep this secret my $ticket = Digest::SHA::sha1_hex($rsa_priv->sign($randomstr)); # Note: spice proxy connects with HTTP, so $proxyticket is exposed to public # we use a signature/timestamp to make sure nobody can fake such ticket # an attacker can use this $proxyticket, but he will fail because $ticket is # private. # The proxy need to be able to extract/verify the ticket # Note: data needs to be lower case only, because virt-viewer needs that # Note: RSA signature are too long (>=256 charaters) and makes problems with remote-viewer my $secret = &$get_csrfr_secret(); my $plain = "pvespiceproxy:$timestamp:$vmid:" . lc($node); # produces 40 characters my $sig = unpack("H*", Digest::SHA::sha1($plain, &$get_csrfr_secret())); #my $sig = unpack("H*", $rsa_priv->sign($plain)); # this produce too long strings (512) my $proxyticket = $plain . "::" . $sig; return ($ticket, $proxyticket); } sub verify_spice_connect_url { my ($connect_str) = @_; # Note: we pass the spice ticket as 'host', so the # spice viewer connects with "$ticket:$port" return undef if !$connect_str; if ($connect_str =~m/^pvespiceproxy:([a-z0-9]{8}):(\d+):(\S+)::([a-z0-9]{40}):(\d+)$/) { my ($timestamp, $vmid, $node, $hexsig, $port) = ($1, $2, $3, $4, $5, $6); my $ttime = hex($timestamp); my $age = time() - $ttime; # use very limited lifetime - is this enough? return undef if !(($age > -20) && ($age < 40)); my $plain = "pvespiceproxy:$timestamp:$vmid:$node"; my $sig = unpack("H*", Digest::SHA::sha1($plain, &$get_csrfr_secret())); if ($sig eq $hexsig) { return ($vmid, $node, $port); } } return undef; } sub read_x509_subject_spice { my ($filename) = @_; # read x509 subject my $bio = Net::SSLeay::BIO_new_file($filename, 'r'); my $x509 = Net::SSLeay::PEM_read_bio_X509($bio); Net::SSLeay::BIO_free($bio); my $nameobj = Net::SSLeay::X509_get_subject_name($x509); my $subject = Net::SSLeay::X509_NAME_oneline($nameobj); Net::SSLeay::X509_free($x509); # remote-viewer wants comma as seperator (not '/') $subject =~ s!^/!!; $subject =~ s!/(\w+=)!,$1!g; return $subject; } # helper to generate SPICE remote-viewer configuration sub remote_viewer_config { my ($authuser, $vmid, $node, $proxy, $title, $port) = @_; if (!$proxy) { my $host = `hostname -f` || PVE::INotify::nodename(); chomp $host; $proxy = $host; } my ($ticket, $proxyticket) = assemble_spice_ticket($authuser, $vmid, $node); my $filename = "/etc/pve/local/pve-ssl.pem"; my $subject = read_x509_subject_spice($filename); my $cacert = PVE::Tools::file_get_contents("/etc/pve/pve-root-ca.pem", 8192); $cacert =~ s/\n/\\n/g; my $config = { type => 'spice', title => $title, host => $proxyticket, # this break tls hostname verification, so we need to use 'host-subject' proxy => "http://$proxy:3128", 'tls-port' => $port, 'host-subject' => $subject, ca => $cacert, password => $ticket, 'delete-this-file' => 1, }; return ($ticket, $proxyticket, $config); } sub check_user_exist { my ($usercfg, $username, $noerr) = @_; $username = PVE::Auth::Plugin::verify_username($username, $noerr); return undef if !$username; return $usercfg->{users}->{$username} if $usercfg && $usercfg->{users}->{$username}; die "no such user ('$username')\n" if !$noerr; return undef; } sub check_user_enabled { my ($usercfg, $username, $noerr) = @_; my $data = check_user_exist($usercfg, $username, $noerr); return undef if !$data; return 1 if $data->{enable}; return 1 if $username eq 'root@pam'; # root is always enabled die "user '$username' is disabled\n" if !$noerr; return undef; } # password should be utf8 encoded # Note: some pluging delay/sleep if auth fails sub authenticate_user { my ($username, $password) = @_; die "no username specified\n" if !$username; my ($ruid, $realm); ($username, $ruid, $realm) = PVE::Auth::Plugin::verify_username($username); my $usercfg = cfs_read_file('user.cfg'); check_user_enabled($usercfg, $username); my $ctime = time(); my $expire = $usercfg->{users}->{$username}->{expire}; die "account expired\n" if $expire && ($expire < $ctime); my $domain_cfg = cfs_read_file('domains.cfg'); my $cfg = $domain_cfg->{ids}->{$realm}; die "auth domain '$realm' does not exists\n" if !$cfg; my $plugin = PVE::Auth::Plugin->lookup($cfg->{type}); $plugin->authenticate_user($cfg, $realm, $ruid, $password); return $username; } sub domain_set_password { my ($realm, $username, $password) = @_; die "no auth domain specified" if !$realm; my $domain_cfg = cfs_read_file('domains.cfg'); my $cfg = $domain_cfg->{ids}->{$realm}; die "auth domain '$realm' does not exists\n" if !$cfg; my $plugin = PVE::Auth::Plugin->lookup($cfg->{type}); $plugin->store_password($cfg, $realm, $username, $password); } sub add_user_group { my ($username, $usercfg, $group) = @_; $usercfg->{users}->{$username}->{groups}->{$group} = 1; $usercfg->{groups}->{$group}->{users}->{$username} = 1; } sub delete_user_group { my ($username, $usercfg) = @_; foreach my $group (keys %{$usercfg->{groups}}) { delete ($usercfg->{groups}->{$group}->{users}->{$username}) if $usercfg->{groups}->{$group}->{users}->{$username}; } } sub delete_user_acl { my ($username, $usercfg) = @_; foreach my $acl (keys %{$usercfg->{acl}}) { delete ($usercfg->{acl}->{$acl}->{users}->{$username}) if $usercfg->{acl}->{$acl}->{users}->{$username}; } } sub delete_group_acl { my ($group, $usercfg) = @_; foreach my $acl (keys %{$usercfg->{acl}}) { delete ($usercfg->{acl}->{$acl}->{groups}->{$group}) if $usercfg->{acl}->{$acl}->{groups}->{$group}; } } sub delete_pool_acl { my ($pool, $usercfg) = @_; my $path = "/pool/$pool"; foreach my $aclpath (keys %{$usercfg->{acl}}) { delete ($usercfg->{acl}->{$aclpath}) if $usercfg->{acl}->{$aclpath} eq 'path'; } } # we automatically create some predefined roles by splitting privs # into 3 groups (per category) # root: only root is allowed to do that # admin: an administrator can to that # user: a normak user/customer can to that my $privgroups = { VM => { root => [], admin => [ 'VM.Config.Disk', 'VM.Config.CPU', 'VM.Config.Memory', 'VM.Config.Network', 'VM.Config.HWType', 'VM.Config.Options', # covers all other things 'VM.Allocate', 'VM.Clone', 'VM.Migrate', 'VM.Monitor', 'VM.Snapshot', ], user => [ 'VM.Config.CDROM', # change CDROM media 'VM.Console', 'VM.Backup', 'VM.PowerMgmt', ], audit => [ 'VM.Audit', ], }, Sys => { root => [ 'Sys.PowerMgmt', 'Sys.Modify', # edit/change node settings ], admin => [ 'Permissions.Modify', 'Sys.Console', 'Sys.Syslog', ], user => [], audit => [ 'Sys.Audit', ], }, Datastore => { root => [], admin => [ 'Datastore.Allocate', 'Datastore.AllocateTemplate', ], user => [ 'Datastore.AllocateSpace', ], audit => [ 'Datastore.Audit', ], }, User => { root => [ 'Realm.Allocate', ], admin => [ 'User.Modify', 'Group.Allocate', # edit/change group settings 'Realm.AllocateUser', ], user => [], audit => [], }, Pool => { root => [], admin => [ 'Pool.Allocate', # create/delete pools ], user => [], audit => [], }, }; my $valid_privs = {}; my $special_roles = { 'NoAccess' => {}, # no priviledges 'Administrator' => $valid_privs, # all priviledges }; sub create_roles { foreach my $cat (keys %$privgroups) { my $cd = $privgroups->{$cat}; foreach my $p (@{$cd->{root}}, @{$cd->{admin}}, @{$cd->{user}}, @{$cd->{audit}}) { $valid_privs->{$p} = 1; } foreach my $p (@{$cd->{admin}}, @{$cd->{user}}, @{$cd->{audit}}) { $special_roles->{"PVE${cat}Admin"}->{$p} = 1; $special_roles->{"PVEAdmin"}->{$p} = 1; } if (scalar(@{$cd->{user}})) { foreach my $p (@{$cd->{user}}, @{$cd->{audit}}) { $special_roles->{"PVE${cat}User"}->{$p} = 1; } } foreach my $p (@{$cd->{audit}}) { $special_roles->{"PVEAuditor"}->{$p} = 1; } } $special_roles->{"PVETemplateUser"} = { 'VM.Clone' => 1, 'VM.Audit' => 1 }; }; create_roles(); sub add_role_privs { my ($role, $usercfg, $privs) = @_; return if !$privs; die "role '$role' does not exist\n" if !$usercfg->{roles}->{$role}; foreach my $priv (split_list($privs)) { if (defined ($valid_privs->{$priv})) { $usercfg->{roles}->{$role}->{$priv} = 1; } else { die "invalid priviledge '$priv'\n"; } } } sub normalize_path { my $path = shift; $path =~ s|/+|/|g; $path =~ s|/$||; $path = '/' if !$path; $path = "/$path" if $path !~ m|^/|; return undef if $path !~ m|^[[:alnum:]\.\-\_\/]+$|; return $path; } PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname); sub verify_groupname { my ($groupname, $noerr) = @_; if ($groupname !~ m/^[A-Za-z0-9\.\-_]+$/) { die "group name '$groupname' contains invalid characters\n" if !$noerr; return undef; } return $groupname; } PVE::JSONSchema::register_format('pve-roleid', \&verify_rolename); sub verify_rolename { my ($rolename, $noerr) = @_; if ($rolename !~ m/^[A-Za-z0-9\.\-_]+$/) { die "role name '$rolename' contains invalid characters\n" if !$noerr; return undef; } return $rolename; } PVE::JSONSchema::register_format('pve-poolid', \&verify_groupname); sub verify_poolname { my ($poolname, $noerr) = @_; if ($poolname !~ m/^[A-Za-z0-9\.\-_]+$/) { die "pool name '$poolname' contains invalid characters\n" if !$noerr; return undef; } return $poolname; } PVE::JSONSchema::register_format('pve-priv', \&verify_privname); sub verify_privname { my ($priv, $noerr) = @_; if (!$valid_privs->{$priv}) { die "invalid priviledge '$priv'\n" if !$noerr; return undef; } return $priv; } sub userconfig_force_defaults { my ($cfg) = @_; foreach my $r (keys %$special_roles) { $cfg->{roles}->{$r} = $special_roles->{$r}; } # fixme: remove 'root' group (not required)? # add root user $cfg->{users}->{'root@pam'}->{enable} = 1; } sub parse_user_config { my ($filename, $raw) = @_; my $cfg = {}; userconfig_force_defaults($cfg); while ($raw && $raw =~ s/^(.*?)(\n|$)//) { my $line = $1; next if $line =~ m/^\s*$/; # skip empty lines my @data; foreach my $d (split (/:/, $line)) { $d =~ s/^\s+//; $d =~ s/\s+$//; push @data, $d } my $et = shift @data; if ($et eq 'user') { my ($user, $enable, $expire, $firstname, $lastname, $email, $comment) = @data; my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1); if (!$realm) { warn "user config - ignore user '$user' - invalid user name\n"; next; } $enable = $enable ? 1 : 0; $expire = 0 if !$expire; if ($expire !~ m/^\d+$/) { warn "user config - ignore user '$user' - (illegal characters in expire '$expire')\n"; next; } $expire = int($expire); #if (!verify_groupname ($group, 1)) { # warn "user config - ignore user '$user' - invalid characters in group name\n"; # next; #} $cfg->{users}->{$user} = { enable => $enable, # group => $group, }; $cfg->{users}->{$user}->{firstname} = PVE::Tools::decode_text($firstname) if $firstname; $cfg->{users}->{$user}->{lastname} = PVE::Tools::decode_text($lastname) if $lastname; $cfg->{users}->{$user}->{email} = $email; $cfg->{users}->{$user}->{comment} = PVE::Tools::decode_text($comment) if $comment; $cfg->{users}->{$user}->{expire} = $expire; #$cfg->{users}->{$user}->{groups}->{$group} = 1; #$cfg->{groups}->{$group}->{$user} = 1; } elsif ($et eq 'group') { my ($group, $userlist, $comment) = @data; if (!verify_groupname($group, 1)) { warn "user config - ignore group '$group' - invalid characters in group name\n"; next; } # make sure to add the group (even if there are no members) $cfg->{groups}->{$group} = { users => {} } if !$cfg->{groups}->{$group}; $cfg->{groups}->{$group}->{comment} = PVE::Tools::decode_text($comment) if $comment; foreach my $user (split_list($userlist)) { if (!PVE::Auth::Plugin::verify_username($user, 1)) { warn "user config - ignore invalid group member '$user'\n"; next; } if ($cfg->{users}->{$user}) { # user exists $cfg->{users}->{$user}->{groups}->{$group} = 1; $cfg->{groups}->{$group}->{users}->{$user} = 1; } else { warn "user config - ignore invalid group member '$user'\n"; } } } elsif ($et eq 'role') { my ($role, $privlist) = @data; if (!verify_rolename($role, 1)) { warn "user config - ignore role '$role' - invalid characters in role name\n"; next; } # make sure to add the role (even if there are no privileges) $cfg->{roles}->{$role} = {} if !$cfg->{roles}->{$role}; foreach my $priv (split_list($privlist)) { if (defined ($valid_privs->{$priv})) { $cfg->{roles}->{$role}->{$priv} = 1; } else { warn "user config - ignore invalid priviledge '$priv'\n"; } } } elsif ($et eq 'acl') { my ($propagate, $pathtxt, $uglist, $rolelist) = @data; if (my $path = normalize_path($pathtxt)) { foreach my $role (split_list($rolelist)) { if (!verify_rolename($role, 1)) { warn "user config - ignore invalid role name '$role' in acl\n"; next; } foreach my $ug (split_list($uglist)) { if ($ug =~ m/^@(\S+)$/) { my $group = $1; if ($cfg->{groups}->{$group}) { # group exists $cfg->{acl}->{$path}->{groups}->{$group}->{$role} = $propagate; } else { warn "user config - ignore invalid acl group '$group'\n"; } } elsif (PVE::Auth::Plugin::verify_username($ug, 1)) { if ($cfg->{users}->{$ug}) { # user exists $cfg->{acl}->{$path}->{users}->{$ug}->{$role} = $propagate; } else { warn "user config - ignore invalid acl member '$ug'\n"; } } else { warn "user config - invalid user/group '$ug' in acl\n"; } } } } else { warn "user config - ignore invalid path in acl '$pathtxt'\n"; } } elsif ($et eq 'pool') { my ($pool, $comment, $vmlist, $storelist) = @data; if (!verify_poolname($pool, 1)) { warn "user config - ignore pool '$pool' - invalid characters in pool name\n"; next; } # make sure to add the pool (even if there are no members) $cfg->{pools}->{$pool} = { vms => {}, storage => {} } if !$cfg->{pools}->{$pool}; $cfg->{pools}->{$pool}->{comment} = PVE::Tools::decode_text($comment) if $comment; foreach my $vmid (split_list($vmlist)) { if ($vmid !~ m/^\d+$/) { warn "user config - ignore invalid vmid '$vmid' in pool '$pool'\n"; next; } $vmid = int($vmid); if ($cfg->{vms}->{$vmid}) { warn "user config - ignore duplicate vmid '$vmid' in pool '$pool'\n"; next; } $cfg->{pools}->{$pool}->{vms}->{$vmid} = 1; # record vmid ==> pool relation $cfg->{vms}->{$vmid} = $pool; } foreach my $storeid (split_list($storelist)) { if ($storeid !~ m/^[a-z][a-z0-9\-\_\.]*[a-z0-9]$/i) { warn "user config - ignore invalid storage '$storeid' in pool '$pool'\n"; next; } $cfg->{pools}->{$pool}->{storage}->{$storeid} = 1; } } else { warn "user config - ignore config line: $line\n"; } } userconfig_force_defaults($cfg); return $cfg; } sub write_user_config { my ($filename, $cfg) = @_; my $data = ''; foreach my $user (keys %{$cfg->{users}}) { my $d = $cfg->{users}->{$user}; my $firstname = $d->{firstname} ? PVE::Tools::encode_text($d->{firstname}) : ''; my $lastname = $d->{lastname} ? PVE::Tools::encode_text($d->{lastname}) : ''; my $email = $d->{email} || ''; my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; my $expire = int($d->{expire} || 0); my $enable = $d->{enable} ? 1 : 0; $data .= "user:$user:$enable:$expire:$firstname:$lastname:$email:$comment:\n"; } $data .= "\n"; foreach my $group (keys %{$cfg->{groups}}) { my $d = $cfg->{groups}->{$group}; my $list = join (',', keys %{$d->{users}}); my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; $data .= "group:$group:$list:$comment:\n"; } $data .= "\n"; foreach my $pool (keys %{$cfg->{pools}}) { my $d = $cfg->{pools}->{$pool}; my $vmlist = join (',', keys %{$d->{vms}}); my $storelist = join (',', keys %{$d->{storage}}); my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : ''; $data .= "pool:$pool:$comment:$vmlist:$storelist:\n"; } $data .= "\n"; foreach my $role (keys %{$cfg->{roles}}) { next if $special_roles->{$role}; my $d = $cfg->{roles}->{$role}; my $list = join (',', keys %$d); $data .= "role:$role:$list:\n"; } $data .= "\n"; foreach my $path (sort keys %{$cfg->{acl}}) { my $d = $cfg->{acl}->{$path}; my $ra = {}; foreach my $group (keys %{$d->{groups}}) { my $l0 = ''; my $l1 = ''; foreach my $role (sort keys %{$d->{groups}->{$group}}) { my $propagate = $d->{groups}->{$group}->{$role}; if ($propagate) { $l1 .= ',' if $l1; $l1 .= $role; } else { $l0 .= ',' if $l0; $l0 .= $role; } } $ra->{0}->{$l0}->{"\@$group"} = 1 if $l0; $ra->{1}->{$l1}->{"\@$group"} = 1 if $l1; } foreach my $user (keys %{$d->{users}}) { # no need to save, because root is always 'Administartor' next if $user eq 'root@pam'; my $l0 = ''; my $l1 = ''; foreach my $role (sort keys %{$d->{users}->{$user}}) { my $propagate = $d->{users}->{$user}->{$role}; if ($propagate) { $l1 .= ',' if $l1; $l1 .= $role; } else { $l0 .= ',' if $l0; $l0 .= $role; } } $ra->{0}->{$l0}->{$user} = 1 if $l0; $ra->{1}->{$l1}->{$user} = 1 if $l1; } foreach my $rolelist (sort keys %{$ra->{0}}) { my $uglist = join (',', keys %{$ra->{0}->{$rolelist}}); $data .= "acl:0:$path:$uglist:$rolelist:\n"; } foreach my $rolelist (sort keys %{$ra->{1}}) { my $uglist = join (',', keys %{$ra->{1}->{$rolelist}}); $data .= "acl:1:$path:$uglist:$rolelist:\n"; } } return $data; } sub roles { my ($cfg, $user, $path) = @_; # NOTE: we do not consider pools here. # You need to use $rpcenv->roles() instead if you want that. return 'Administrator' if $user eq 'root@pam'; # root can do anything my $perm = {}; foreach my $p (sort keys %{$cfg->{acl}}) { my $final = ($path eq $p); next if !(($p eq '/') || $final || ($path =~ m|^$p/|)); my $acl = $cfg->{acl}->{$p}; #print "CHECKACL $path $p\n"; #print "ACL $path = " . Dumper ($acl); if (my $ri = $acl->{users}->{$user}) { my $new; foreach my $role (keys %$ri) { my $propagate = $ri->{$role}; if ($final || $propagate) { #print "APPLY ROLE $p $user $role\n"; $new = {} if !$new; $new->{$role} = 1; } } if ($new) { $perm = $new; # overwrite previous settings next; # user privs always override group privs } } my $new; foreach my $g (keys %{$acl->{groups}}) { next if !$cfg->{groups}->{$g}->{users}->{$user}; if (my $ri = $acl->{groups}->{$g}) { foreach my $role (keys %$ri) { my $propagate = $ri->{$role}; if ($final || $propagate) { #print "APPLY ROLE $p \@$g $role\n"; $new = {} if !$new; $new->{$role} = 1; } } } } if ($new) { $perm = $new; # overwrite previous settings next; } } return ('NoAccess') if defined ($perm->{NoAccess}); #return () if defined ($perm->{NoAccess}); #print "permission $user $path = " . Dumper ($perm); my @ra = keys %$perm; #print "roles $user $path = " . join (',', @ra) . "\n"; return @ra; } sub permission { my ($cfg, $user, $path) = @_; $user = PVE::Auth::Plugin::verify_username($user, 1); return {} if !$user; my @ra = roles($cfg, $user, $path); my $privs = {}; foreach my $role (@ra) { if (my $privset = $cfg->{roles}->{$role}) { foreach my $p (keys %$privset) { $privs->{$p} = 1; } } } #print "priviledges $user $path = " . Dumper ($privs); return $privs; } sub check_permissions { my ($username, $path, $privlist) = @_; $path = normalize_path($path); my $usercfg = cfs_read_file('user.cfg'); my $perm = permission($usercfg, $username, $path); foreach my $priv (split_list($privlist)) { return undef if !$perm->{$priv}; }; return 1; } sub add_vm_to_pool { my ($vmid, $pool) = @_; my $addVMtoPoolFn = sub { my $usercfg = cfs_read_file("user.cfg"); if (my $data = $usercfg->{pools}->{$pool}) { $data->{vms}->{$vmid} = 1; $usercfg->{vms}->{$vmid} = $pool; cfs_write_file("user.cfg", $usercfg); } }; lock_user_config($addVMtoPoolFn, "can't add VM $vmid to pool '$pool'"); } sub remove_vm_from_pool { my ($vmid) = @_; my $delVMfromPoolFn = sub { my $usercfg = cfs_read_file("user.cfg"); if (my $pool = $usercfg->{vms}->{$vmid}) { if (my $data = $usercfg->{pools}->{$pool}) { delete $data->{vms}->{$vmid}; delete $usercfg->{vms}->{$vmid}; cfs_write_file("user.cfg", $usercfg); } } }; lock_user_config($delVMfromPoolFn, "pool cleanup for VM $vmid failed"); } 1;