-# 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;
-}
-