X-Git-Url: https://git.proxmox.com/?p=pve-access-control.git;a=blobdiff_plain;f=PVE%2FAccessControl.pm;h=6a85c1a20b21722bf6cad45a231721919d807a19;hp=4ba612cbfdf0829df3a5f1a1ac588a83f068aa7f;hb=HEAD;hpb=86cd805b635299fd810ff80a79cac8a37f7e6a63 diff --git a/PVE/AccessControl.pm b/PVE/AccessControl.pm deleted file mode 100644 index 4ba612c..0000000 --- a/PVE/AccessControl.pm +++ /dev/null @@ -1,1262 +0,0 @@ -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 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; - - 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}; - - return 1 if $username eq 'root@pam'; # root is always enabled - - die "user '$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}; - } - - # 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, $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}$/) { - print "GOT:$line\n"; - $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;