<?php
if ( getConfig('yubikey_enable', '1') != '1' )
return true;
$plugins->attachHook("userprefs_jbox", "yubikey_ucp_setup();");
$plugins->attachHook("userprefs_body", "return yubikey_user_cp(\$section);");
$plugins->attachHook("login_form_html", "yubikey_inject_html_login();");
$plugins->attachHook("ucp_register_form", "yubikey_inject_registration_form();");
$plugins->attachHook("ucp_register_validate", "yubikey_register_validate(\$error);");
$plugins->attachHook("user_registered", "yubikey_register_insert_key(\$user_id);");
function yubikey_ucp_setup()
{
userprefs_menu_add('usercp_sec_profile', 'yubiucp_panel_title', makeUrlNS('Special', 'Preferences/Yubikey') . '" onclick="ajaxLoginNavTo(\'Special\', \'Preferences/Yubikey\', '.USER_LEVEL_CHPREF.'); return false;');
}
function yubikey_user_cp($section)
{
global $db, $session, $paths, $template, $plugins; // Common objects
global $lang;
if ( $section !== 'Yubikey' )
return false;
if ( $session->auth_level < USER_LEVEL_CHPREF )
{
redirect(makeUrlNS('Special', 'Login/' . $paths->fullpage, 'level=' . USER_LEVEL_CHPREF, true), 'Authentication required', 'You need to re-authenticate to access this page.', 0);
}
$count_enabled = intval(getConfig('yubikey_enroll_limit', '3'));
if ( isset($_POST['submit']) )
{
csrf_request_confirm();
$keys = array();
if ( isset($_POST['yubikey_enable']) )
{
for ( $i = 0; $i < $count_enabled; $i++ )
{
if ( !empty($_POST["yubikey_otp_$i"]) )
{
$ckey =& $_POST["yubikey_otp_$i"];
if ( preg_match('/^[cbdefghijklnrtuv]{12,44}$/', $ckey) )
{
$ckey = substr($ckey, 0, 12);
$keys[] = $ckey;
}
unset($ckey);
}
}
}
// Check for double enrollment
$keys_check = "yubi_uid = '" . implode("' OR yubi_uid = '", $keys) . "'";
$q = $db->sql_query('SELECT yubi_uid FROM ' . table_prefix . "yubikey WHERE ( $keys_check ) AND user_id != {$session->user_id};");
if ( !$q )
$db->_die();
if ( $db->numrows() > 0 )
{
echo '<div class="error-box" style="margin: 0 0 10px 0;">' . $lang->get('yubiucp_err_double_enrollment') . '</div>';
while ( $row = $db->fetchrow() )
{
foreach ( $keys as $i => $key )
{
if ( $key == $row['yubi_uid'] )
{
unset($keys[$i]);
}
}
}
$keys = array_values($keys);
}
$db->free_result();
// Remove all currently registered keys
$q = $db->sql_query('DELETE FROM ' . table_prefix . "yubikey WHERE user_id = {$session->user_id};");
if ( !$q )
$db->_die();
// Enroll any new keys
if ( !empty($keys) )
{
$query = 'INSERT INTO ' . table_prefix . "yubikey(user_id, yubi_uid) VALUES\n " .
"( $session->user_id, '" . implode("' ),\n ( $session->user_id, '", $keys) . "' );";
if ( !$db->sql_query($query) )
$db->_die();
}
// Calculate flags
$yubi_flags = 0;
$yubi_flags |= intval($_POST['login_normal_flags']);
$yubi_flags |= intval($_POST['login_elev_flags']);
$yubi_flags |= ( isset($_POST['allow_no_yubikey']) ) ? YK_SEC_ALLOW_NO_OTP : 0;
// update flags
$q = $db->sql_query('UPDATE ' . table_prefix . "users SET user_yubikey_flags = $yubi_flags WHERE user_id = {$session->user_id};");
if ( !$q )
$db->_die();
// regenerate session
$q = $db->sql_query('SELECT password FROM ' . table_prefix . "users WHERE user_id = {$session->user_id};");
if ( !$q )
$db->_die();
list($password_hmac) = $db->fetchrow_num();
@$session->register_session($session->user_id, $session->username, $password_hmac, USER_LEVEL_MEMBER, false);
$session->logout(USER_LEVEL_CHPREF);
// redirect back to normal CP
// if OB-ing isn't enabled, require a JS redirect (hey, not many other options...)
if ( @ob_get_contents() )
{
@ob_end_clean();
redirect(makeUrlNS('Special', 'Preferences'), $lang->get('yubiucp_msg_save_title'), $lang->get('yubiucp_msg_save_body'), 3);
}
else
{
echo '<h3>' . $lang->get('yubiucp_msg_save_title') . '</h3>';
echo '<p>' . $lang->get('yubiucp_msg_save_body') . '</p>';
// not much choice here, i'm resorting to javascript because the user CP always
// sends headers :-/
echo '<script type="text/javascript">
addOnloadHook(function()
{' .
// note: $_COOKIE['sid'] has just been assigned by $session->register_session() - so it's safe to use here.
'
createCookie(\'sid\', \'' . $_COOKIE['sid'] . '\');
window.location = makeUrlNS(\'Special\', \'Preferences\');
});
</script>';
return true;
}
}
else
{
// Fetch flags
$q = $db->sql_query('SELECT user_yubikey_flags FROM ' . table_prefix . "users WHERE user_id = {$session->user_id};");
if ( !$q )
$db->_die();
list($yubi_flags) = $db->fetchrow_num();
$yubi_flags = intval($yubi_flags);
// Fetch user's authorized keys from the DB
$q = $db->sql_query('SELECT yubi_uid FROM ' . table_prefix . "yubikey WHERE user_id = {$session->user_id};");
if ( !$q )
$db->_die();
$keys = array();
while ( $row = $db->fetchrow() )
{
$keys[] = $row['yubi_uid'];
}
$db->free_result();
}
while ( count($keys) < $count_enabled )
{
$keys[] = false;
}
$enable_checked = ( $keys[0] === false && !isset($_POST['yubikey_enable']) ) ? '' : 'checked="checked"';
$displaytable = ( $keys[0] === false && !isset($_POST['yubikey_enable']) ) ? 'none' : 'block';
$check_normal_keyonly = ( !($yubi_flags & YK_SEC_NORMAL_USERNAME) && !($yubi_flags & YK_SEC_NORMAL_PASSWORD) ) ? 'checked="checked" ' : '';
$check_normal_username = ( ($yubi_flags & YK_SEC_NORMAL_USERNAME) && !($yubi_flags & YK_SEC_NORMAL_PASSWORD) ) ? 'checked="checked" ' : '';
$check_normal_userandpw = ( ($yubi_flags & YK_SEC_NORMAL_USERNAME) && ($yubi_flags & YK_SEC_NORMAL_PASSWORD) ) ? 'checked="checked" ' : '';
$check_elev_keyonly = ( !($yubi_flags & YK_SEC_ELEV_USERNAME) && !($yubi_flags & YK_SEC_ELEV_PASSWORD) ) ? 'checked="checked" ' : '';
$check_elev_username = ( ($yubi_flags & YK_SEC_ELEV_USERNAME) && !($yubi_flags & YK_SEC_ELEV_PASSWORD) ) ? 'checked="checked" ' : '';
$check_elev_userandpw = ( ($yubi_flags & YK_SEC_ELEV_USERNAME) && ($yubi_flags & YK_SEC_ELEV_PASSWORD) ) ? 'checked="checked" ' : '';
?>
<h3 style="margin-top: 0;"><?php echo $lang->get('yubiucp_panel_title'); ?></h3>
<form action="<?php echo makeUrlNS('Special', 'Preferences/Yubikey'); ?>" method="post">
<div>
<table border="0" cellpadding="4" width="100%">
<tr>
<td style="width: 50%; text-align: right;">
<?php echo $lang->get('yubiucp_field_enable_title'); ?><br />
<small><?php echo $lang->get('yubiucp_field_enable_hint'); ?></small>
</td>
<td style="width: 50%;">
<label>
<input type="checkbox" name="yubikey_enable" onclick="if ( $(this).attr('checked') ) $('#yk_useroptions').show('blind'); else $('#yk_useroptions').hide('blind');" <?php echo $enable_checked; ?> />
<?php echo $lang->get('yubiucp_field_enable'); ?>
</label>
</td>
</tr>
</table>
<table border="0" cellpadding="4" width="100%" id="yk_useroptions" style="display: <?php echo $displaytable ?>;">
<tr class="yk_alt1">
<td style="width: 50%; text-align: right;">
<?php echo $lang->get('yubiucp_field_keys_title'); ?><br />
<small><?php
echo $lang->get('yubiucp_field_keys_hint');
if ( $count_enabled > 1 )
{
echo ' ';
echo $lang->get('yubiucp_field_keys_maximum', array('max' => $count_enabled));
}
?></small>
</td>
<td style="width: 50%;">
<?php
for ( $i = 0; $i < $count_enabled; $i++ )
{
echo '<p>' . generate_yubikey_field('yubikey_otp_' . $i, $keys[$i]) . '</p>';
}
?>
</td>
</tr>
<tr>
<td style="width: 50%; text-align: right;">
<?php echo $lang->get('yubiucp_field_normal_flags'); ?>
</td>
<td>
<label>
<input type="radio" name="login_normal_flags" value="0" <?php echo $check_normal_keyonly; ?>/>
<?php echo $lang->get('yubiucp_field_flags_keyonly'); ?>
</label>
<br />
<label>
<input type="radio" name="login_normal_flags" value="<?php echo strval(YK_SEC_NORMAL_USERNAME); ?>" <?php echo $check_normal_username; ?>/>
<?php echo $lang->get('yubiucp_field_flags_username'); ?>
</label>
<br />
<label>
<input type="radio" name="login_normal_flags" value="<?php echo strval(YK_SEC_NORMAL_USERNAME | YK_SEC_NORMAL_PASSWORD); ?>" <?php echo $check_normal_userandpw; ?>/>
<?php echo $lang->get('yubiucp_field_flags_userandpw'); ?>
</label>
</td>
</tr>
<tr class="yk_alt1">
<td style="width: 50%; text-align: right;">
<?php echo $lang->get('yubiucp_field_elev_flags'); ?>
</td>
<td>
<label>
<input type="radio" name="login_elev_flags" value="0" <?php echo $check_elev_keyonly; ?>/>
<?php echo $lang->get('yubiucp_field_flags_keyonly'); ?>
</label>
<br />
<label>
<input type="radio" name="login_elev_flags" value="<?php echo strval(YK_SEC_ELEV_USERNAME); ?>" <?php echo $check_elev_username; ?>/>
<?php echo $lang->get('yubiucp_field_flags_username'); ?>
</label>
<br />
<label>
<input type="radio" name="login_elev_flags" value="<?php echo strval(YK_SEC_ELEV_USERNAME | YK_SEC_ELEV_PASSWORD); ?>" <?php echo $check_elev_userandpw; ?>/>
<?php echo $lang->get('yubiucp_field_flags_userandpw'); ?>
</label>
</td>
</tr>
<tr>
<td>
</td>
<td>
<label>
<input type="checkbox" name="allow_no_yubikey" <?php if ( $yubi_flags & YK_SEC_ALLOW_NO_OTP ) echo 'checked="checked" '; ?>/>
<?php echo $lang->get('yubiucp_field_allow_plain_login'); ?>
</label>
<br />
<small>
<?php echo $lang->get('yubiucp_field_allow_plain_login_hint'); ?>
</small>
</td>
</tr>
</table>
<table border="0" cellpadding="4" width="100%">
<tr class="yk_alt1">
<td colspan="2" style="text-align: center;">
<input type="submit" name="submit" value="<?php echo $lang->get('etc_save_changes'); ?>" />
</td>
</tr>
</table>
</div>
<input type="hidden" name="cstok" value="<?php echo $session->csrf_token; ?>" />
</form>
<?php
return true;
}
function yubikey_inject_html_login()
{
global $lang;
?>
<tr>
<td class="row2">
<?php echo $lang->get('yubiauth_lbl_otp_field'); ?>
</td>
<td class="row1" colspan="2">
<input type="text" size="40" class="yubikey_noscript" name="yubikey_otp" />
</td>
</tr>
<?php
}
function yubikey_inject_registration_form()
{
global $lang;
$preset_otp = isset($_POST['yubikey_otp']) ? $_POST['yubikey_otp'] : false;
?>
<tr>
<td class="row1">
<?php echo $lang->get('yubiucp_reg_field_otp'); ?><br />
<small><?php
if ( getConfig('yubikey_reg_require_otp', '0') == '1' )
echo $lang->get('yubiucp_reg_field_otp_hint_required');
else
echo $lang->get('yubiucp_reg_field_otp_hint_optional');
?></small>
</td>
<td class="row1">
<?php
echo generate_yubikey_field('yubikey_otp', $preset_otp);
?>
</td>
<td class="row1">
</td>
</tr>
<?php
}
function yubikey_register_validate(&$error)
{
global $db, $session, $paths, $template, $plugins; // Common objects
global $lang;
$otp_required = getConfig('yubikey_reg_require_otp', '0') == '1';
$have_otp = !empty($_POST['yubikey_otp']);
if ( $otp_required && !$have_otp )
{
$error = $lang->get('yubiucp_reg_err_otp_required');
return false;
}
if ( $have_otp )
{
$result = yubikey_validate_otp($_POST['yubikey_otp']);
if ( !$result['success'] )
{
$error = '<b>' . $lang->get('yubiucp_reg_err_otp_invalid') . '</b><br />' . $lang->get("yubiauth_err_{$result['error']}");
return false;
}
// check for double enrollment
$yubi_uid = substr($_POST['yubikey_otp'], 0, 12);
// Note on SQL injection: yubikey_validate_otp() has already ensured that this is safe
$q = $db->sql_query('SELECT 1 FROM ' . table_prefix . "yubikey WHERE yubi_uid = '$yubi_uid';");
if ( !$q )
$db->_die();
if ( $db->numrows() > 0 )
{
$error = '<b>' . $lang->get('yubiucp_reg_err_otp_invalid') . '</b><br />' . $lang->get('yubiucp_err_double_enrollment_single');
return false;
}
$db->free_result();
}
}
function yubikey_register_insert_key($user_id)
{
global $db, $session, $paths, $template, $plugins; // Common objects
if ( !empty($_POST['yubikey_otp']) )
{
$yubi_uid = $db->escape(substr($_POST['yubikey_otp'], 0, 12));
$q = $db->sql_query('INSERT INTO ' . table_prefix . "yubikey ( user_id, yubi_uid ) VALUES ( $user_id, '$yubi_uid' );");
if ( !$q )
$db->_die();
}
}