X-Git-Url: https://git.proxmox.com/?p=pve-access-control.git;a=blobdiff_plain;f=PVE%2FAccessControl.pm;h=e3c5fa9ed84ead591333a989c599ac8624346863;hp=8305117c500b2dca9fe5f5345d4078154c89c99a;hb=dc7573bf85d074c091e9cc193d0e1ff6cb776585;hpb=373cb3839470e2d5783c7778473013a45ad53ca9

diff --git a/PVE/AccessControl.pm b/PVE/AccessControl.pm
index 8305117..e3c5fa9 100644
--- a/PVE/AccessControl.pm
+++ b/PVE/AccessControl.pm
@@ -1,27 +1,38 @@
 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 Authen::PAM qw(:constants);
-use Net::LDAP;
 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 Encode;
+
+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 $shadowconfigfile = "priv/shadow.cfg";
-my $domainconfigfile = "domains.cfg";
 my $pve_www_key_fn = "$confdir/pve-www.key";
 
 my $ticket_lifetime = 3600*2; # 2 hours
@@ -32,41 +43,20 @@ cfs_register_file('user.cfg',
 		  \&parse_user_config,  
 		  \&write_user_config);
 
-cfs_register_file($shadowconfigfile, 
-		  \&parse_shadow_passwd, 
-		  \&write_shadow_config);
 
-cfs_register_file($domainconfigfile, 
-		  \&parse_domains,
-		  \&write_domains);
-
-
-sub lock_user_config {
-    my ($code, $errmsg) = @_;
-
-    cfs_lock_file("user.cfg", undef, $code);
-    my $err = $@;
-    if ($err) {
-	$errmsg ? die "$errmsg: $err" : die $err;
-    }
+sub verify_username {
+    PVE::Auth::Plugin::verify_username(@_);
 }
 
-sub lock_domain_config {
-    my ($code, $errmsg) = @_;
-
-    cfs_lock_file($domainconfigfile, undef, $code);
-    my $err = $@;
-    if ($err) {
-	$errmsg ? die "$errmsg: $err" : die $err;
-    }
+sub pve_verify_realm {
+    PVE::Auth::Plugin::pve_verify_realm(@_);
 }
 
-sub lock_shadow_config {
+sub lock_user_config {
     my ($code, $errmsg) = @_;
 
-    cfs_lock_file($shadowconfigfile, undef, $code);
-    my $err = $@;
-    if ($err) {
+    cfs_lock_file("user.cfg", undef, $code);
+    if (my $err = $@) {
 	$errmsg ? die "$errmsg: $err" : die $err;
     }
 }
@@ -156,14 +146,15 @@ sub verify_ticket {
 
 	my $rsa_pub = get_pubkey();
 	if ($rsa_pub->verify($plain, decode_base64($sig))) {
-	    if ($plain =~ m/^PVE:(([A-Za-z0-9\.\-_]+)(\@([A-Za-z0-9\.\-_]+))?):([A-Z0-9]{8})$/) {
+	    if ($plain =~ m/^PVE:(\S+):([A-Z0-9]{8})$/) {
 		my $username = $1;
-		my $timestamp = $5;
+		my $timestamp = $2;
 		my $ttime = hex($timestamp);
 
 		my $age = time() - $ttime;
 
-		if (($age > -300) && ($age < $ticket_lifetime)) {
+		if (PVE::Auth::Plugin::verify_username($username, 1) &&
+		    ($age > -300) && ($age < $ticket_lifetime)) {
 		    return wantarray ? ($username, $age) : $username;
 		}
 	    }
@@ -224,159 +215,127 @@ sub verify_vnc_ticket {
     return undef;
 }
 
+sub assemble_spice_ticket {
+    my ($username, $vmid, $node) = @_;
 
-sub authenticate_user_shadow {
-    my ($userid, $password) = @_;
-
-    die "no password\n" if !$password;
-
-    my $shadow_cfg = cfs_read_file($shadowconfigfile);
-    
-    if ($shadow_cfg->{users}->{$userid}) {
-	my $encpw = crypt($password, $shadow_cfg->{users}->{$userid}->{shadow});
-        die "invalid credentials\n" if ($encpw ne $shadow_cfg->{users}->{$userid}->{shadow});
-    } else {
-	die "no password set\n";
-    }
-}
+    my $rsa_priv = get_privkey();
 
-sub authenticate_user_pam {
-    my ($userid, $password) = @_;
+    my $timestamp = sprintf("%08x", time());
 
-    # user (www-data) need to be able to read /etc/passwd /etc/shadow
+    my $randomstr = "PVESPICE:$timestamp:$vmid:$node:" . rand(10);
 
-    die "no password\n" if !$password;
+    # 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));
 
-    my $pamh = new Authen::PAM ('common-auth', $userid, sub {
-	my @res;
-	while(@_) {
-	    my $msg_type = shift;
-	    my $msg = shift;
-	    push @res, (0, $password);
-	}
-	push @res, 0;
-	return @res;
-    });
+    # 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
 
-    if (!ref ($pamh)) {
-	my $err = $pamh->pam_strerror($pamh);
-	die "error during PAM init: $err";
-    }
+    my $secret = &$get_csrfr_secret();
+    my $plain = "pvespiceproxy:$timestamp:$vmid:" . lc($node);
 
-    my $res;
+    # produces 40 characters
+    my $sig = unpack("H*", Digest::SHA::sha1($plain, &$get_csrfr_secret()));
 
-    if (($res = $pamh->pam_authenticate(0)) != PAM_SUCCESS) {
-	my $err = $pamh->pam_strerror($res);
-	die "$err\n";
-    }
+    #my $sig =  unpack("H*", $rsa_priv->sign($plain)); # this produce too long strings (512)
 
-    if (($res = $pamh->pam_acct_mgmt (0)) != PAM_SUCCESS) {
-	my $err = $pamh->pam_strerror($res);
-	die "$err\n";
-    }
+    my $proxyticket = $plain . "::" . $sig;
 
-    $pamh = 0; # call destructor
+    return ($ticket, $proxyticket);
 }
 
-sub authenticate_user_ad {
+sub verify_spice_connect_url {
+    my ($connect_str) = @_;
 
-    my ($entry, $server, $userid, $password) = @_;
+    # Note: we pass the spice ticket as 'host', so the
+    # spice viewer connects with "$ticket:$port"
 
-    my $default_port = $entry->{secure} ? 636: 389;
-    my $port = $entry->{port} ? $entry->{port} : $default_port;
-    my $scheme = $entry->{secure} ? 'ldaps' : 'ldap';
-    my $conn_string = "$scheme://${server}:$port";
-    
-    my $ldap = Net::LDAP->new($server) || die "$@\n";
+    return undef if !$connect_str;
 
-    $userid = "$userid\@$entry->{domain}" 
-	if $userid !~ m/@/ && $entry->{domain};
+    if ($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;
 
-    my $res = $ldap->bind($userid, password => $password);
+	# use very limited lifetime - is this enough?
+	return undef if !(($age > -20) && ($age < 40));
 
-    my $code = $res->code();
-    my $err = $res->error;
+	my $plain = "pvespiceproxy:$timestamp:$vmid:$node";
+	my $sig = unpack("H*", Digest::SHA::sha1($plain, &$get_csrfr_secret()));
 
-    $ldap->unbind();
+	if ($sig eq $hexsig) {
+	    return ($vmid, $node, $port);
+	} 
+    }
 
-    die "$err\n" if ($code);
+    return undef;
 }
 
-sub authenticate_user_ldap {
+sub read_x509_subject_spice {
+    my ($filename) = @_;
 
-    my ($entry, $server, $userid, $password) = @_;
-
-    my $default_port = $entry->{secure} ? 636: 389;
-    my $port = $entry->{port} ? $entry->{port} : $default_port;
-    my $scheme = $entry->{secure} ? 'ldaps' : 'ldap';
-    my $conn_string = "$scheme://${server}:$port";
-
-    my $ldap = Net::LDAP->new($conn_string, verify => 'none') || die "$@\n";
-    my $search = $entry->{user_attr} . "=" . $userid;
-    my $result = $ldap->search( base    => "$entry->{base_dn}",
-				scope   => "sub",
-				filter  => "$search",
-				attrs   => ['dn']
-				);
-    die "no entries returned\n" if !$result->entries;
-    my @entries = $result->entries;
-    my $res = $ldap->bind($entries[0]->dn, password => $password);
-
-    my $code = $res->code();
-    my $err = $res->error;
-
-    $ldap->unbind();
+    # 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;
 
-    die "$err\n" if ($code);
+    return $subject;
 }
 
-sub authenticate_user_domain {
-    my ($realm, $userid, $password) = @_;
- 
-    my $domain_cfg = cfs_read_file($domainconfigfile);
+# helper to generate SPICE remote-viewer configuration
+sub remote_viewer_config {
+    my ($authuser, $vmid, $node, $proxy, $title, $port) = @_;
 
-    die "no auth domain specified" if !$realm;
+    if (!$proxy) {
+	my $host = `hostname -f` || PVE::INotify::nodename();
+	chomp $host;
+	$proxy = $host;
+    }
 
-    if ($realm eq 'pam') {
-	authenticate_user_pam($userid, $password);
-	return;
-    } 
+    my ($ticket, $proxyticket) = assemble_spice_ticket($authuser, $vmid, $node);
 
-    eval {
-	if ($realm eq 'pve') {
-	    authenticate_user_shadow($userid, $password);
-	} else { 
+    my $filename = "/etc/pve/local/pve-ssl.pem";
+    my $subject = read_x509_subject_spice($filename);
 
-	    my $cfg = $domain_cfg->{$realm};
-	    die "auth domain '$realm' does not exists\n" if !$cfg;
+    my $cacert = PVE::Tools::file_get_contents("/etc/pve/pve-root-ca.pem", 8192);
+    $cacert =~ s/\n/\\n/g;
     
-	    if ($cfg->{type} eq 'ad') {
-		eval { authenticate_user_ad($cfg, $cfg->{server1}, $userid, $password); };
-		my $err = $@;
-		return if !$err;
-		die $err if !$cfg->{server2};
-		authenticate_user_ad($cfg, $cfg->{server2}, $userid, $password); 
-	    } elsif ($cfg->{type} eq 'ldap') {
-		eval { authenticate_user_ldap($cfg, $cfg->{server1}, $userid, $password); };
-		my $err = $@;
-		return if !$err;
-		die $err if !$cfg->{server2};
-		authenticate_user_ldap($cfg, $cfg->{server2}, $userid, $password); 
-	    } else {
-		die "unknown auth type '$cfg->{type}'\n";
-	    }
-	}
+    my $config = {
+    'secure-attention' => "Ctrl+Alt+Ins",
+    'toggle-fullscreen' => "Shift+F11",
+    'release-cursor' => "Ctrl+Alt+R",
+	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,
     };
-    if (my $err = $@) {
-	sleep(2); # timeout after failed auth
-	die $err;
-    }
+
+    return ($ticket, $proxyticket, $config);
 }
 
 sub check_user_exist {
     my ($usercfg, $username, $noerr) = @_;
 
-    $username = verify_username($username, $noerr);
+    $username = PVE::Auth::Plugin::verify_username($username, $noerr);
     return undef if !$username;
  
     return $usercfg->{users}->{$username} if $usercfg && $usercfg->{users}->{$username};
@@ -402,89 +361,46 @@ sub check_user_enabled {
 }
 
 # 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 ($userid, $realm);
+    my ($ruid, $realm);
 
-    ($username, $userid, $realm) = verify_username($username);
+    ($username, $ruid, $realm) = PVE::Auth::Plugin::verify_username($username);
 
     my $usercfg = cfs_read_file('user.cfg');
 
-    eval { check_user_enabled($usercfg, $username); };
-    if (my $err = $@) {
-	sleep(2);
-	die $err;
-    }
+    check_user_enabled($usercfg, $username);
 
     my $ctime = time();
     my $expire = $usercfg->{users}->{$username}->{expire};
 
-    if ($expire && ($expire < $ctime)) {
-	sleep(2);
-	die "account expired\n"
-    }
+    die "account expired\n" if $expire && ($expire < $ctime);
 
-    authenticate_user_domain($realm, $userid, $password);
+    my $domain_cfg = cfs_read_file('domains.cfg');
 
-    return $username;
-}
-
-sub delete_shadow_password {
-    my ($userid) = @_;
- 
-    lock_shadow_config(sub {
-	my $shadow_cfg = cfs_read_file($shadowconfigfile);
-	delete ($shadow_cfg->{users}->{$userid})
-	    if $shadow_cfg->{users}->{$userid};
-	cfs_write_file($shadowconfigfile, $shadow_cfg);
-    });
-}
-
-sub store_shadow_password {
-    my ($userid, $password) = @_;
-  
-    lock_shadow_config(sub {
-	my $shadow_cfg = cfs_read_file($shadowconfigfile);
-	$shadow_cfg->{users}->{$userid}->{shadow} = encrypt_pw($password);
-	cfs_write_file($shadowconfigfile, $shadow_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);
 
-sub encrypt_pw {
-    my ($pw) = @_;
-
-    my $time = substr (Digest::SHA::sha1_base64 (time), 0, 8);
-    return crypt (encode("utf8", $pw), "\$5\$$time\$");
-}
-
-sub store_pam_password {
-    my ($userid, $password) = @_;
-
-    my $cmd = ['/usr/sbin/usermod'];
-
-    my $epw = encrypt_pw($password);
-    push @$cmd, '-p', $epw;
-
-    push @$cmd, $userid;
-
-    run_command($cmd);
+    return $username;
 }
 
 sub domain_set_password {
-    my ($realm, $userid, $password) = @_;
+    my ($realm, $username, $password) = @_;
 
     die "no auth domain specified" if !$realm;
 
-    if ($realm eq 'pam') {
-	store_pam_password($userid, $password);
-    } elsif ($realm eq 'pve') {
-	store_shadow_password($userid, $password);
-    } else {
-	die "can't set password on auth domain '$realm'\n";
-    }
+    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 {
@@ -549,18 +465,21 @@ my $privgroups = {
 	root => [],
 	admin => [	     
 	    'VM.Config.Disk', 
-	    'VM.Config.CDROM', # change CDROM media
 	    '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 => [ 
@@ -646,30 +565,12 @@ sub create_roles {
 	    $special_roles->{"PVEAuditor"}->{$p} = 1;
 	}
     }
+
+    $special_roles->{"PVETemplateUser"} = { 'VM.Clone' => 1, 'VM.Audit' => 1 };
 };
 
 create_roles();
 
-my $valid_attributes = {
-    ad => {
-	server1 => '[\w\d]+(.[\w\d]+)*',
-	server2 => '[\w\d]+(.[\w\d]+)*',
-	domain => '\S+',
-	port => '\d+',
-	secure => '',
-	comment => '.*',
-    },
-    ldap => {
-	server1 => '[\w\d]+(.[\w\d]+)*',
-	server2 => '[\w\d]+(.[\w\d]+)*',
-	base_dn => '\w+=[\w\s]+(,\s*\w+=[\w\s]+)*',
-	user_attr => '\S{2,}',
-	secure => '',
-	port => '\d+',
-	comment => '.*',
-    }
-};
-
 sub add_role_privs {
     my ($role, $usercfg, $privs) = @_;
 
@@ -697,59 +598,11 @@ sub normalize_path {
 
     $path = "/$path" if $path !~ m|^/|;
 
-    return undef if $path !~ m|^[[:alnum:]\-\_\/]+$|;
+    return undef if $path !~ m|^[[:alnum:]\.\-\_\/]+$|;
 
     return $path;
 } 
 
-my $realm_regex = qr/[A-Za-z][A-Za-z0-9\.\-_]+/;
-
-sub pve_verify_realm {
-    my ($realm, $noerr) = @_;
- 
-    if ($realm !~ m/^${realm_regex}$/) {
-	return undef if $noerr;
-	die "value does not look like a valid realm\n"; 
-    }
-    return $realm;
-}
-
-PVE::JSONSchema::register_format('pve-userid', \&verify_username);
-sub verify_username {
-    my ($username, $noerr) = @_;
-
-    $username = '' if !$username;
-    my $len = length($username);
-    if ($len < 3) {
-	die "user name '$username' is too short\n" if !$noerr;
-	return undef;
-    }
-    if ($len > 64) {
-	die "user name '$username' is too long ($len > 64)\n" if !$noerr;
-	return undef;
-    }
-
-    # we only allow a limited set of characters (colon is not allowed,
-    # because we store usernames in colon separated lists)!
-    if ($username =~ m/^([^\s:]+)\@(${realm_regex})$/) {
-	return wantarray ? ($username, $1, $2) : $username;
-    }
-
-    die "value '$username' does not look like a valid user name\n" if !$noerr;
-
-    return undef;
-}
-PVE::JSONSchema::register_standard_option('userid', {
-    description => "User ID",
-    type => 'string', format => 'pve-userid',
-    maxLength => 64,
-});
-
-PVE::JSONSchema::register_standard_option('realm', {
-    description => "Authentication domain ID",
-    type => 'string', format => 'pve-configid',
-    maxLength => 32,
-});
 
 PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname);
 sub verify_groupname {
@@ -844,7 +697,7 @@ sub parse_user_config {
 	if ($et eq 'user') {
 	    my ($user, $enable, $expire, $firstname, $lastname, $email, $comment) = @data;
 
-	    my (undef, undef, $realm) = verify_username($user, 1);
+	    my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1);
 	    if (!$realm) {
 		warn "user config - ignore user '$user' - invalid user name\n";
 		next;
@@ -893,7 +746,7 @@ sub parse_user_config {
 
 	    foreach my $user (split_list($userlist)) {
 
-		if (!verify_username($user, 1)) {
+		if (!PVE::Auth::Plugin::verify_username($user, 1)) {
 		    warn "user config - ignore invalid group member '$user'\n";
 		    next;
 		}
@@ -937,14 +790,14 @@ sub parse_user_config {
 		    }
 
 		    foreach my $ug (split_list($uglist)) {
-			if ($ug =~ m/^@(\w+)$/) {
+			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 (verify_username($ug, 1)) {
+			} elsif (PVE::Auth::Plugin::verify_username($ug, 1)) {
 			    if ($cfg->{users}->{$ug}) { # user exists 
 				$cfg->{acl}->{$path}->{users}->{$ug}->{$role} = $propagate;
 			    } else {
@@ -1006,191 +859,6 @@ sub parse_user_config {
     return $cfg;
 }
 
-sub parse_shadow_passwd {
-    my ($filename, $raw) = @_;
-
-    my $shadow = {};
-
-    while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
-	my $line = $1;
-
-	next if $line =~ m/^\s*$/; # skip empty lines
-
-	if ($line !~ m/^\S+:\S+:$/) {
-	    warn "pve shadow password: ignore invalid line $.\n";
-	    next;
-	}
-
-	my ($userid, $crypt_pass) = split (/:/, $line);
-	$shadow->{users}->{$userid}->{shadow} = $crypt_pass;
-    }
-
-    return $shadow;
-}
-
-sub write_domains {
-    my ($filename, $cfg) = @_;
-
-    my $data = '';
-
-    my $wrote_default;
-
-    foreach my $realm (sort keys %$cfg) {
-	my $entry = $cfg->{$realm};
-	my $type = lc($entry->{type});
-
-	next if !$type;
-
-	next if ($type eq 'pam') || ($type eq 'pve');
-
-	my $formats = $valid_attributes->{$type};
-	next if !$formats;
-
-	$data .= "$type: $realm\n";
-
-	foreach my $k (sort keys %$entry) {
-	    next if $k eq 'type';
-	    my $v = $entry->{$k};
-	    if ($k eq 'default') {
-		    $data .= "\t$k\n" if $v && !$wrote_default;
-		    $wrote_default = 1;
-	    } elsif (defined($formats->{$k})) {
-		if (!$formats->{$k}) {
-		    $data .= "\t$k\n" if $v;
-		} elsif ($v =~ m/^$formats->{$k}$/) {
-		    $v = PVE::Tools::encode_text($v) if $k eq 'comment';
-		    $data .= "\t$k $v\n";
-		} else {
-		    die "invalid value '$v' for attribute '$k'\n";
-		}
-	    } else {
-		die "invalid attribute '$k' - not supported\n";
-	    }
-	}
-
-	$data .= "\n";
-    }
-
-    return $data;
-}
-
-sub parse_domains {
-    my ($filename, $raw) = @_;
-
-    my $cfg = {};
-
-    my $default;
-
-    while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
-	my $line = $1;
- 
-	next if $line =~ m/^\#/; # skip comment lines
-	next if $line =~ m/^\s*$/; # skip empty lines
-
-	if ($line =~ m/^(\S+):\s*(\S+)\s*$/) {
-	    my $realm = $2;
-	    my $type = lc($1);
-
-	    my $ignore = 0;
-	    my $entry;
-
-	    my $formats = $valid_attributes->{$type};
-	    if (!$formats) {
-		$ignore = 1;
-		warn "ignoring domain '$realm' - (unsupported authentication type '$type')\n";
-	    } elsif (!pve_verify_realm($realm, 1)) {
-		$ignore = 1;
-		warn "ignoring domain '$realm' - (illegal characters)\n";
-	    } else {
-		$entry = { type => $type };
-	    }
-
-	    while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
-		$line = $1;
-
-		next if $line =~ m/^\#/; #skip comment lines
-		last if $line =~ m/^\s*$/;
-		    
-		next if $ignore; # skip
-
-		if ($line =~ m/^\s+(default)\s*$/) {
-		    $default = $realm if !$default;
-		} elsif ($line =~ m/^\s+(\S+)(\s+(.*\S))?\s*$/) {
-		    my ($k, $v) = (lc($1), $3);
-		    if (defined($formats->{$k})) {
-			if (!$formats->{$k} && !defined($v)) {
-				$entry->{$k} = 1;			    
-			} elsif ($formats->{$k} && $v =~ m/^$formats->{$k}$/) {
-			    if (!defined($entry->{$k})) {
-				$v = PVE::Tools::decode_text($v) if $k eq 'comment';
-				$entry->{$k} = $v;
-			    } else {
-				warn "ignoring duplicate attribute '$k $v'\n";
-			    }
-			} else {
-			    warn "ignoring value '$v' for attribute '$k' - invalid format\n";
-			}
-		    } else {
-			warn "ignoring attribute '$k' - not supported\n";
-		    }
-		} else {
-		    warn "ignore config line: $line\n";
-		}
-	    }
-
-	    if ($entry->{server2} && !$entry->{server1}) {
-		$entry->{server1} = $entry->{server2};
-		delete $entry->{server2};
-	    }
-
-	    if ($ignore) {
-		# do nothing
-	    } elsif (!$entry->{server1}) {
-		warn "ignoring domain '$realm' - missing server attribute\n";
-	    } elsif (($entry->{type} eq "ldap") && !$entry->{user_attr}) {
-		warn "ignoring domain '$realm' - missing user attribute\n";
-	    } elsif (($entry->{type} eq "ldap") && !$entry->{base_dn}) {
-		warn "ignoring domain '$realm' - missing base_dn attribute\n";
-	    } elsif (($entry->{type} eq "ad") && !$entry->{domain}) {
-		warn "ignoring domain '$realm' - missing domain attribute\n";
-	    } else {
-		$cfg->{$realm} = $entry;
-	    }
-     
-	} else {
-	    warn "ignore config line: $line\n";
-	}
-    }
-
-    $cfg->{$default}->{default} = 1 if $default;
-
-    # add default domains
-
-    $cfg->{pve} = {
-	type => 'builtin',
-	comment => "Proxmox VE authentication server", 
-    };
-
-    $cfg->{pam} = {
-	type => 'builtin',
-	comment => "Linux PAM standard authentication", 
-    };
-	
-    return $cfg;
-}
-
-sub write_shadow_config {
-    my ($filename, $cfg) = @_;
-
-    my $data = '';
-    foreach my $userid (keys %{$cfg->{users}}) {
-	my $crypt_pass = $cfg->{users}->{$userid}->{shadow};
-	$data .= "$userid:$crypt_pass:\n";
-    }
-
-    return $data
-}
-
 sub write_user_config {
     my ($filename, $cfg) = @_;
 
@@ -1364,7 +1032,7 @@ sub roles {
 sub permission {
     my ($cfg, $user, $path) = @_;
 
-    $user = verify_username($user, 1);
+    $user = PVE::Auth::Plugin::verify_username($user, 1);
     return {} if !$user;
 
     my @ra = roles($cfg, $user, $path);
@@ -1398,4 +1066,36 @@ sub check_permissions {
     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;