+++ /dev/null
-package PVE::AccessControl;
-
-use strict;
-use warnings;
-use Encode;
-use Crypt::OpenSSL::Random;
-use Crypt::OpenSSL::RSA;
-use Net::SSLeay;
-use Net::IP;
-use MIME::Base64;
-use Digest::SHA;
-use Digest::HMAC_SHA1;
-use URI::Escape;
-use LWP::UserAgent;
-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;
-
- $proxy = "[$proxy]" if Net::IP::ip_is_ipv6($proxy);
- 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 => $ticket,
- 'delete-this-file' => 1,
- };
-
- return ($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 $data->{enable};
-
- die "user '$username' is disabled\n" if !$noerr;
-
- return undef;
-}
-
-sub verify_one_time_pw {
- my ($usercfg, $username, $tfa_cfg, $otp) = @_;
-
- my $type = $tfa_cfg->{type};
-
- die "missing one time password for Factor-two authentication '$type'\n" if !$otp;
-
- # fixme: proxy support?
- my $proxy;
-
- if ($type eq 'yubico') {
- my $keys = $usercfg->{users}->{$username}->{keys};
- yubico_verify_otp($otp, $keys, $tfa_cfg->{url}, $tfa_cfg->{id}, $tfa_cfg->{key}, $proxy);
- } elsif ($type eq 'oath') {
- my $keys = $usercfg->{users}->{$username}->{keys};
- oath_verify_otp($otp, $keys, $tfa_cfg->{step}, $tfa_cfg->{digits});
- } else {
- die "unknown tfa type '$type'\n";
- }
-}
-
-# password should be utf8 encoded
-# Note: some pluging delay/sleep if auth fails
-sub authenticate_user {
- my ($username, $password, $otp) = @_;
-
- die "no username specified\n" if !$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, $password);
-
- if ($cfg->{tfa}) {
- my $tfa_cfg = PVE::Auth::Plugin::parse_tfa_config($cfg->{tfa});
- verify_one_time_pw($usercfg, $username, $tfa_cfg, $otp);
- }
-
- 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};
- }
-
- # add root user if not exists
- if (!$cfg->{users}->{'root@pam'}) {
- $cfg->{users}->{'root@pam'}->{enable} = 1;
- }
-}
-
-sub parse_user_config {
- my ($filename, $raw) = @_;
-
- my $cfg = {};
-
- userconfig_force_defaults($cfg);
-
- $raw = '' if !defined($raw);
- while ($raw =~ /^\s*(.+?)\s*$/gm) {
- my $line = $1;
- 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, $keys) = @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;
- # keys: allowed yubico key ids or oath secrets (base32 encoded)
- $cfg->{users}->{$user}->{keys} = $keys if $keys;
-
- #$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;
- my $keys = $d->{keys} ? $d->{keys} : '';
- $data .= "user:$user:$enable:$expire:$firstname:$lastname:$email:$comment:$keys:\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 $vmid failed");
-}
-
-# experimental code for yubico OTP verification
-
-sub yubico_compute_param_sig {
- my ($param, $api_key) = @_;
-
- my $paramstr = '';
- foreach my $key (sort keys %$param) {
- $paramstr .= '&' if $paramstr;
- $paramstr .= "$key=$param->{$key}";
- }
-
- my $sig = uri_escape(encode_base64(Digest::HMAC_SHA1::hmac_sha1($paramstr, decode_base64($api_key || '')), ''));
-
- return ($paramstr, $sig);
-}
-
-sub yubico_verify_otp {
- my ($otp, $keys, $url, $api_id, $api_key, $proxy) = @_;
-
- die "yubico: missing password\n" if !defined($otp);
- die "yubico: missing API ID\n" if !defined($api_id);
- die "yubico: missing API KEY\n" if !defined($api_key);
- die "yubico: no associated yubico keys\n" if $keys =~ m/^\s+$/;
-
- die "yubico: wrong OTP lenght\n" if (length($otp) < 32) || (length($otp) > 48);
-
- # we always use http, because https cert verification always make problem, and
- # some proxies does not work with https.
-
- $url = 'http://api2.yubico.com/wsapi/2.0/verify' if !defined($url);
-
- my $params = {
- nonce => Digest::HMAC_SHA1::hmac_sha1_hex(time(), rand()),
- id => $api_id,
- otp => uri_escape($otp),
- timestamp => 1,
- };
-
- my ($paramstr, $sig) = yubico_compute_param_sig($params, $api_key);
-
- $paramstr .= "&h=$sig" if $api_key;
-
- my $req = HTTP::Request->new('GET' => "$url?$paramstr");
-
- my $ua = LWP::UserAgent->new(protocols_allowed => ['http'], timeout => 30);
-
- if ($proxy) {
- $ua->proxy(['http'], $proxy);
- } else {
- $ua->env_proxy;
- }
-
- my $response = $ua->request($req);
- my $code = $response->code;
-
- if ($code != 200) {
- my $msg = $response->message || 'unknown';
- die "Invalid response from server: $code $msg\n";
- }
-
- my $raw = $response->decoded_content;
-
- my $result = {};
- foreach my $kvpair (split(/\n/, $raw)) {
- chomp $kvpair;
- if($kvpair =~ /^\S+=/) {
- my ($k, $v) = split(/=/, $kvpair, 2);
- $v =~ s/\s//g;
- $result->{$k} = $v;
- }
- }
-
- my $rsig = $result->{h};
- delete $result->{h};
-
- if ($api_key) {
- my ($datastr, $vsig) = yubico_compute_param_sig($result, $api_key);
- $vsig = uri_unescape($vsig);
- die "yubico: result signature verification failed\n" if $rsig ne $vsig;
- }
-
- die "yubico auth failed: $result->{status}\n" if $result->{status} ne 'OK';
-
- my $publicid = $result->{publicid} = substr(lc($result->{otp}), 0, 12);
-
- my $found;
- foreach my $k (PVE::Tools::split_list($keys)) {
- if ($k eq $publicid) {
- $found = 1;
- last;
- }
- }
-
- die "yubico auth failed: key does not belong to user\n" if !$found;
-
- return $result;
-}
-
-sub oath_verify_otp {
- my ($otp, $keys, $step, $digits) = @_;
-
- die "oath: missing password\n" if !defined($otp);
- die "oath: no associated oath keys\n" if $keys =~ m/^\s+$/;
-
- $step = 30 if !$step;
- $digits = 6 if !$digits;
-
- my $found;
-
- my $parser = sub {
- my $line = shift;
-
- if ($line =~ m/^\d{6}$/) {
- $found = 1 if $otp eq $line;
- }
- };
-
- foreach my $k (PVE::Tools::split_list($keys)) {
- # Note: we generate 3 values to allow small time drift
- my $now = localtime(time() - $step);
- my $cmd = ['oathtool', '--totp', '--digits', $digits, '-N', $now, '-s', $step, '-w', '2', '-b', $k];
- eval { run_command($cmd, outfunc => $parser, errfunc => sub {}); };
- last if $found;
- }
-
- die "oath auth failed\n" if !$found;
-}
-
-1;
projects / pve-access-control.git / blobdiff