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 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;
Crypt::OpenSSL::RSA->import_random_seed();
-cfs_register_file('user.cfg',
- \&parse_user_config,
+cfs_register_file('user.cfg',
+ \&parse_user_config,
\&write_user_config);
}
my $pve_auth_pub_key;
-sub get_pubkey {
+sub get_pubkey {
return $pve_auth_pub_key if $pve_auth_pub_key;
- my $input = PVE::Tools::file_get_contents($authpubkeyfn);
+ my $input = PVE::Tools::file_get_contents($authpubkeyfn);
$pve_auth_pub_key = Crypt::OpenSSL::RSA->new_public_key($input);
my $csrf_prevention_secret;
my $get_csrfr_secret = sub {
if (!$csrf_prevention_secret) {
- my $input = PVE::Tools::file_get_contents($pve_www_key_fn);
+ my $input = PVE::Tools::file_get_contents($pve_www_key_fn);
$csrf_prevention_secret = Digest::SHA::sha1_base64($input);
}
return $csrf_prevention_secret;
my $digest = Digest::SHA::sha1_base64("$timestamp:$username", &$get_csrfr_secret());
- return "$timestamp:$digest";
+ return "$timestamp:$digest";
}
sub verify_csrf_prevention_token {
return $pve_auth_priv_key if $pve_auth_priv_key;
- my $input = PVE::Tools::file_get_contents($authprivkeyfn);
+ my $input = PVE::Tools::file_get_contents($authprivkeyfn);
$pve_auth_priv_key = Crypt::OpenSSL::RSA->new_private_key($input);
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 used 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 a ticket
+ # an attacker can use this $proxyticket, but he will fail because $ticket is
+ # private.
+ # The proxy needs 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 make 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');
+ die "Could not open $filename using OpenSSL\n"
+ if !$bio;
+
+ my $x509 = Net::SSLeay::PEM_read_bio_X509($bio);
+ Net::SSLeay::BIO_free($bio);
+
+ die "Could not parse X509 certificate in $filename\n"
+ if !$x509;
+
+ 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 => $proxyticket, # this breaks tls hostname verification, so we need to use 'host-subject'
+ proxy => "http://$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;
}
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 = $tfa_cfg->{type};
+
+ die "missing one time password for two-factor authentication '$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 plugins delay/sleep if auth fails
sub authenticate_user {
- my ($username, $password) = @_;
+ my ($username, $password, $otp) = @_;
die "no username specified\n" if !$username;
-
+
my ($ruid, $realm);
($username, $ruid, $realm) = PVE::Auth::Plugin::verify_username($username);
my $usercfg = cfs_read_file('user.cfg');
- eval { check_user_enabled($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);
my $domain_cfg = cfs_read_file('domains.cfg');
- eval {
- 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 (my $err = $@) {
- sleep(2); # timeout after failed auth
- die $err;
+ 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;
my $domain_cfg = cfs_read_file('domains.cfg');
my $cfg = $domain_cfg->{ids}->{$realm};
- die "auth domain '$realm' does not exists\n" if !$cfg;
+ die "auth domain '$realm' does not exist\n" if !$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}->{$username})
+ delete ($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}->{$username})
+ delete ($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}->{$group})
+ delete ($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';
- }
+ delete ($usercfg->{acl}->{$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
+# user: a normal user/customer can to that
my $privgroups = {
VM => {
root => [],
- admin => [
- 'VM.Config.Disk',
- 'VM.Config.CPU',
- 'VM.Config.Memory',
- 'VM.Config.Network',
+ 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.Config.Options', # covers all other things
+ 'VM.Allocate',
+ 'VM.Clone',
'VM.Migrate',
- 'VM.Monitor',
+ 'VM.Monitor',
+ 'VM.Snapshot',
],
user => [
'VM.Config.CDROM', # change CDROM media
- 'VM.Console',
+ 'VM.Console',
'VM.Backup',
'VM.PowerMgmt',
],
- audit => [
+ audit => [
'VM.Audit',
],
},
Sys => {
root => [
- 'Sys.PowerMgmt',
+ 'Sys.PowerMgmt',
'Sys.Modify', # edit/change node settings
],
admin => [
'Permissions.Modify',
- 'Sys.Console',
+ 'Sys.Console',
'Sys.Syslog',
],
user => [],
admin => [
'User.Modify',
'Group.Allocate', # edit/change group settings
- 'Realm.AllocateUser',
+ 'Realm.AllocateUser',
],
user => [],
audit => [],
my $valid_privs = {};
my $special_roles = {
- 'NoAccess' => {}, # no priviledges
- 'Administrator' => $valid_privs, # all priviledges
+ 'NoAccess' => {}, # no privileges
+ 'Administrator' => $valid_privs, # all privileges
};
sub create_roles {
foreach my $cat (keys %$privgroups) {
my $cd = $privgroups->{$cat};
- foreach my $p (@{$cd->{root}}, @{$cd->{admin}},
+ foreach my $p (@{$cd->{root}}, @{$cd->{admin}},
@{$cd->{user}}, @{$cd->{audit}}) {
$valid_privs->{$p} = 1;
}
$special_roles->{"PVEAuditor"}->{$p} = 1;
}
}
+
+ $special_roles->{"PVETemplateUser"} = { 'VM.Clone' => 1, 'VM.Audit' => 1 };
};
create_roles();
if (defined ($valid_privs->{$priv})) {
$usercfg->{roles}->{$role}->{$priv} = 1;
} else {
- die "invalid priviledge '$priv'\n";
- }
- }
+ die "invalid privilege '$priv'\n";
+ }
+ }
}
sub normalize_path {
$path = "/$path" if $path !~ m|^/|;
- return undef if $path !~ m|^[[:alnum:]\-\_\/]+$|;
+ return undef if $path !~ m|^[[:alnum:]\.\-\_\/]+$|;
return $path;
-}
+}
PVE::JSONSchema::register_format('pve-groupid', \&verify_groupname);
return undef;
}
-
+
return $groupname;
}
return undef;
}
-
+
return $rolename;
}
return undef;
}
-
+
return $poolname;
}
my ($priv, $noerr) = @_;
if (!$valid_privs->{$priv}) {
- die "invalid priviledge '$priv'\n" if !$noerr;
+ die "invalid privilege '$priv'\n" if !$noerr;
return undef;
}
-
+
return $priv;
}
$cfg->{roles}->{$r} = $special_roles->{$r};
}
- # fixme: remove 'root' group (not required)?
-
- # add root user
- $cfg->{users}->{'root@pam'}->{enable} = 1;
+ # add root user if not exists
+ if (!$cfg->{users}->{'root@pam'}) {
+ $cfg->{users}->{'root@pam'}->{enable} = 1;
+ }
}
sub parse_user_config {
userconfig_force_defaults($cfg);
- while ($raw && $raw =~ s/^(.*?)(\n|$)//) {
+ $raw = '' if !defined($raw);
+ while ($raw =~ /^\s*(.+?)\s*$/gm) {
my $line = $1;
-
- next if $line =~ m/^\s*$/; # skip empty lines
-
my @data;
foreach my $d (split (/:/, $line)) {
- $d =~ s/^\s+//;
+ $d =~ s/^\s+//;
$d =~ s/\s+$//;
push @data, $d
}
my $et = shift @data;
if ($et eq 'user') {
- my ($user, $enable, $expire, $firstname, $lastname, $email, $comment) = @data;
+ my ($user, $enable, $expire, $firstname, $lastname, $email, $comment, $keys) = @data;
my (undef, undef, $realm) = PVE::Auth::Plugin::verify_username($user, 1);
if (!$realm) {
$cfg->{users}->{$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}->{$user} = 1;
next;
}
- if ($cfg->{users}->{$user}) { # user exists
+ if ($cfg->{users}->{$user}) { # user exists
$cfg->{users}->{$user}->{groups}->{$group} = 1;
$cfg->{groups}->{$group}->{users}->{$user} = 1;
} else {
} elsif ($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;
$cfg->{roles}->{$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}->{$group}) { # group exists
+ if ($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}->{$ug}) { # user exists
+ if ($cfg->{users}->{$ug}) { # user exists
$cfg->{acl}->{$path}->{users}->{$ug}->{$role} = $propagate;
} else {
warn "user config - ignore invalid acl member '$ug'\n";
}
$cfg->{pools}->{$pool}->{vms}->{$vmid} = 1;
-
+
# record vmid ==> pool relation
$cfg->{vms}->{$vmid} = $pool;
}
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";
+ 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}) : '';
+ my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : '';
$data .= "group:$group:$list:$comment:\n";
}
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}) : '';
+ my $comment = $d->{comment} ? PVE::Tools::encode_text($d->{comment}) : '';
$data .= "pool:$pool:$comment:$vmlist:$storelist:\n";
}
}
foreach my $user (keys %{$d->{users}}) {
- # no need to save, because root is always 'Administartor'
- next if $user eq 'root@pam';
+ # no need to save, because root is always 'Administrator'
+ next if $user eq 'root@pam';
my $l0 = '';
my $l1 = '';
sub roles {
my ($cfg, $user, $path) = @_;
- # NOTE: we do not consider pools here.
+ # NOTE: we do not consider pools here.
# You need to use $rpcenv->roles() instead if you want that.
return 'Administrator' if $user eq 'root@pam'; # root can do anything
return ('NoAccess') if defined ($perm->{NoAccess});
#return () if defined ($perm->{NoAccess});
-
+
#print "permission $user $path = " . Dumper ($perm);
my @ra = keys %$perm;
return @ra;
}
-
+
sub permission {
my ($cfg, $user, $path) = @_;
return {} if !$user;
my @ra = roles($cfg, $user, $path);
-
+
my $privs = {};
foreach my $role (@ra) {
return 1;
}
+sub remove_vm_access {
+ my ($vmid) = @_;
+ my $delVMaccessFn = sub {
+ my $usercfg = cfs_read_file("user.cfg");
+ my $modified;
+
+ if (my $acl = $usercfg->{acl}->{"/vms/$vmid"}) {
+ delete $usercfg->{acl}->{"/vms/$vmid"};
+ $modified = 1;
+ }
+ if (my $pool = $usercfg->{vms}->{$vmid}) {
+ if (my $data = $usercfg->{pools}->{$pool}) {
+ delete $data->{vms}->{$vmid};
+ delete $usercfg->{vms}->{$vmid};
+ $modified = 1;
+ }
+ }
+ cfs_write_file("user.cfg", $usercfg) if $modified;
+ };
+
+ lock_user_config($delVMaccessFn, "access permissions cleanup for VM $vmid failed");
+}
+
+sub remove_storage_access {
+ my ($storeid) = @_;
+
+ my $deleteStorageAccessFn = sub {
+ my $usercfg = cfs_read_file("user.cfg");
+ my $modified;
+
+ if (my $storage = $usercfg->{acl}->{"/storage/$storeid"}) {
+ delete $usercfg->{acl}->{"/storage/$storeid"};
+ $modified = 1;
+ }
+ foreach my $pool (keys %{$usercfg->{pools}}) {
+ delete $usercfg->{pools}->{$pool}->{storage}->{$storeid};
+ $modified = 1;
+ }
+ cfs_write_file("user.cfg", $usercfg) if $modified;
+ };
+
+ lock_user_config($deleteStorageAccessFn,
+ "access permissions cleanup for storage $storeid failed");
+}
+
+sub add_vm_to_pool {
+ my ($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}";
+ }
+
+ # hmac_sha1_base64 does not add '=' padding characters, so we use encode_base64
+ my $sig = uri_escape(encode_base64(Digest::SHA::hmac_sha1($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 length\n" if (length($otp) < 32) || (length($otp) > 48);
+
+ $url = 'http://api2.yubico.com/wsapi/2.0/verify' if !defined($url);
+
+ my $params = {
+ nonce => Digest::SHA::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 $ua = LWP::UserAgent->new(protocols_allowed => ['http', 'https'], timeout => 30);
+
+ if ($proxy) {
+ $ua->proxy(['http', 'https'], $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;
+}
+
+# bash completion helpers
+
+sub complete_username {
+
+ my $user_cfg = cfs_read_file('user.cfg');
+
+ return [ keys %{$user_cfg->{users}} ];
+}
+
+sub complete_group {
+
+ my $user_cfg = cfs_read_file('user.cfg');
+
+ return [ keys %{$user_cfg->{groups}} ];
+}
+
+sub complete_realm {
+
+ my $domain_cfg = cfs_read_file('domains.cfg');
+
+ return [ keys %{$domain_cfg->{ids}} ];
+}
+
1;