use Net::SSLeay;
use Net::IP;
use MIME::Base64;
+use MIME::Base32; #libmime-base32-perl
use Digest::SHA;
-use Digest::HMAC_SHA1;
+
+use PVE::Ticket;
use URI::Escape;
use LWP::UserAgent;
use PVE::Tools qw(run_command lock_file file_get_contents split_list safe_print);
sub assemble_csrf_prevention_token {
my ($username) = @_;
- my $timestamp = sprintf("%08X", time());
-
- my $digest = Digest::SHA::sha1_base64("$timestamp:$username", &$get_csrfr_secret());
+ my $secret = &$get_csrfr_secret();
- return "$timestamp:$digest";
+ return PVE::Ticket::assemble_csrf_prevention_token ($secret, $username);
}
sub verify_csrf_prevention_token {
my ($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;
+ my $secret = &$get_csrfr_secret();
- return undef;
+ return PVE::Ticket::verify_csrf_prevention_token(
+ $secret, $username, $token, -300, $ticket_lifetime, $noerr);
}
my $pve_auth_priv_key;
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 $ticket;
+ return PVE::Ticket::assemble_rsa_ticket($rsa_priv, 'PVE', $username);
}
sub verify_ticket {
my ($ticket, $noerr) = @_;
- if ($ticket && $ticket =~ m/^(PVE:\S+)::([^:\s]+)$/) {
- my $plain = $1;
- my $sig = $2;
+ my $rsa_pub = get_pubkey();
- 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 ($username, $age) = PVE::Ticket::verify_rsa_ticket(
+ $rsa_pub, 'PVE', $ticket, undef, -300, $ticket_lifetime, $noerr);
- my $age = time() - $ttime;
+ return undef if $noerr && !defined($username);
- 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 if !PVE::Auth::Plugin::verify_username($username, $noerr);
- return undef;
+ return wantarray ? ($username, $age) : $username;
}
# VNC tickets
my $rsa_priv = get_privkey();
- my $timestamp = sprintf("%08X", time());
-
- my $plain = "PVEVNC:$timestamp";
-
$path = normalize_path($path);
- my $full = "$plain:$username:$path";
+ my $secret_data = "$username:$path";
- my $ticket = $plain . "::" . encode_base64($rsa_priv->sign($full), '');
-
- return $ticket;
+ return PVE::Ticket::assemble_rsa_ticket(
+ $rsa_priv, 'PVEVNC', undef, $secret_data);
}
sub verify_vnc_ticket {
my ($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 $rsa_pub = get_pubkey();
- my $age = time() - $ttime;
+ my $secret_data = "$username:$path";
- if (($age > -20) && ($age < 40)) {
- return 1;
- }
- }
- }
- }
-
- die "permission denied - invalid vnc ticket\n" if !$noerr;
-
- return undef;
+ return PVE::Ticket::verify_rsa_ticket(
+ $rsa_pub, 'PVEVNC', $ticket, $secret_data, -20, 40, $noerr);
}
sub assemble_spice_ticket {
my ($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);
+ return PVE::Ticket::assemble_spice_ticket(
+ $secret, $username, $vmid, $node);
}
+
sub verify_spice_connect_url {
my ($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);
- }
- }
+ my $secret = &$get_csrfr_secret();
- return undef;
+ return PVE::Ticket::verify_spice_connect_url($secret, $connect_str);
}
sub read_x509_subject_spice {
# 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);
'release-cursor' => "Ctrl+Alt+R",
type => 'spice',
title => $title,
- host => $proxyticket, # this break tls hostname verification, so we need to use 'host-subject'
+ host => $proxyticket, # this breaks tls hostname verification, so we need to use 'host-subject'
proxy => "http://$proxy:3128",
'tls-port' => $port,
'host-subject' => $subject,
my $type = $tfa_cfg->{type};
- die "missing one time password for Factor-two authentication '$type'\n" if !$otp;
+ die "missing one time password for two-factor authentication '$type'\n" if !$otp;
# fixme: proxy support?
my $proxy;
}
# password should be utf8 encoded
-# Note: some pluging delay/sleep if auth fails
+# Note: some plugins delay/sleep if auth fails
sub authenticate_user {
my ($username, $password, $otp) = @_;
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);
}
# 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 => [],
my $valid_privs = {};
my $special_roles = {
- 'NoAccess' => {}, # no priviledges
- 'Administrator' => $valid_privs, # all priviledges
+ 'NoAccess' => {}, # no privileges
+ 'Administrator' => $valid_privs, # all privileges
};
sub create_roles {
if (defined ($valid_privs->{$priv})) {
$usercfg->{roles}->{$role}->{$priv} = 1;
} else {
- die "invalid priviledge '$priv'\n";
+ die "invalid privilege '$priv'\n";
}
}
}
my ($priv, $noerr) = @_;
if (!$valid_privs->{$priv}) {
- die "invalid priviledge '$priv'\n" if !$noerr;
+ die "invalid privilege '$priv'\n" if !$noerr;
return undef;
}
}
foreach my $user (keys %{$d->{users}}) {
- # no need to save, because root is always 'Administartor'
+ # no need to save, because root is always 'Administrator'
next if $user eq 'root@pam';
my $l0 = '';
lock_user_config($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, $pool) = @_;
lock_user_config($delVMfromPoolFn, "pool cleanup for VM $vmid failed");
}
+# hotp/totp code
+
+sub hotp($$;$) {
+ my ($binsecret, $number, $digits) = @_;
+
+ $digits = 6 if !defined($digits);
+
+ my $bincounter = pack('Q>', $number);
+ my $hmac = Digest::SHA::hmac_sha1($bincounter, $binsecret);
+
+ my $offset = unpack('C', substr($hmac,19) & pack('C', 0x0F));
+ my $part = substr($hmac, $offset, 4);
+ my $otp = unpack('N', $part);
+ my $value = ($otp & 0x7fffffff) % (10**$digits);
+ return sprintf("%0${digits}d", $value);
+}
+
# experimental code for yubico OTP verification
sub yubico_compute_param_sig {
$paramstr .= "$key=$param->{$key}";
}
- my $sig = uri_escape(encode_base64(Digest::HMAC_SHA1::hmac_sha1($paramstr, decode_base64($api_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, $sig);
}
die "yubico: missing API KEY\n" if !defined($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.
+ 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::HMAC_SHA1::hmac_sha1_hex(time(), rand()),
+ nonce => Digest::SHA::hmac_sha1_hex(time(), rand()),
id => $api_id,
otp => uri_escape($otp),
timestamp => 1,
my $req = HTTP::Request->new('GET' => "$url?$paramstr");
- my $ua = LWP::UserAgent->new(protocols_allowed => ['http'], timeout => 30);
+ my $ua = LWP::UserAgent->new(protocols_allowed => ['http', 'https'], timeout => 30);
if ($proxy) {
- $ua->proxy(['http'], $proxy);
+ $ua->proxy(['http', 'https'], $proxy);
} else {
$ua->env_proxy;
}
$digits = 6 if !$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 {}); };
+ my $binkey;
+ if ($k =~ /^[A-Z2-7=]{16}$/) {
+ $binkey = MIME::Base32::decode_rfc3548($k);
+ } elsif ($k =~ /^[A-Fa-f0-9]{40}$/) {
+ $binkey = pack('H*', $k);
+ } else {
+ die "unrecognized key format, must be hex or base32 encoded\n";
+ }
+
+ # force integer division for time/step
+ use integer;
+ my $now = time()/$step - 1;
+ $found = 1 if $otp eq hotp($binkey, $now+0, $digits);
+ $found = 1 if $otp eq hotp($binkey, $now+1, $digits);
+ $found = 1 if $otp eq hotp($binkey, $now+2, $digits);
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;
projects / pve-access-control.git / blobdiff