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<?php
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/*
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* voucher.inc
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*
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* part of pfSense (https://www.pfsense.org)
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* Copyright (c) 2007-2013 BSD Perimeter
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* Copyright (c) 2013-2016 Electric Sheep Fencing
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* Copyright (c) 2014-2024 Rubicon Communications, LLC (Netgate)
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* Copyright (c) 2007 Marcel Wiget <mwiget@mac.com>
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* All rights reserved.
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*
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* originally part of m0n0wall (http://m0n0.ch/wall)
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* Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>.
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* All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* include all configuration functions */
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if (!function_exists('captiveportal_syslog')) {
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require_once("captiveportal.inc");
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}
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function captiveportal_xmlrpc_sync_get_details(&$syncip, &$port, &$username, &$password, $carp_loop = false) {
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global $cpzone;
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if (config_path_enabled("captiveportal/{$cpzone}", "enablebackwardsync") && !$carp_loop
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&& captiveportal_ha_is_node_in_backup_mode($cpzone)) {
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$syncip = config_get_path("captiveportal/{$cpzone}/backwardsyncip");
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$username = config_get_path("captiveportal/{$cpzone}/backwardsyncuser");
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$password = config_get_path("captiveportal/{$cpzone}/backwardsyncpassword");
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$port = config_get_path('system/webgui/port');
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if (empty($port)) { // if port is empty lets rely on the protocol selection
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if (config_get_path('system/webgui/protocol') == "http") {
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$port = "80";
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} else {
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$port = "443";
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}
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}
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return true;
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}
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if (empty(config_get_path('hasync/synchronizetoip')) ||
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config_get_path('hasync/synchronizecaptiveportal') == "" ||
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$carp_loop == true) {
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return false;
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}
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$syncip = config_get_path('hasync/synchronizetoip');
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$password = config_get_path('hasync/password');
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if (empty(config_get_path('hasync/username'))) {
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$username = "admin";
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} else {
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$username = config_get_path('hasync/username');
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}
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/* if port is empty lets rely on the protocol selection */
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$port = config_get_path('system/webgui/port');
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if (empty($port)) {
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if (config_get_path('system/webgui/protocol') == "http") {
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$port = "80";
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} else {
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$port = "443";
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}
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}
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return true;
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}
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function voucher_expire($voucher_received, $carp_loop = false) {
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global $g, $cpzone, $cpzoneid;
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$voucherlck = lock("voucher{$cpzone}", LOCK_EX);
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// read rolls into assoc array with rollid as key and minutes as value
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$tickets_per_roll = array();
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$minutes_per_roll = array();
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foreach (config_get_path("voucher/{$cpzone}/roll", []) as $rollent) {
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$tickets_per_roll[$rollent['number']] = $rollent['count'];
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$minutes_per_roll[$rollent['number']] = $rollent['minutes'];
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}
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// split into an array. Useful for multiple vouchers given
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$a_vouchers_received = preg_split("/[\t\n\r ]+/s", $voucher_received);
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$active_dirty = false;
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$unsetindexes = array();
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// go through all received vouchers, check their valid and extract
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// Roll# and Ticket# using the external readvoucher binary
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foreach ($a_vouchers_received as $voucher) {
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$v = escapeshellarg($voucher);
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if (strlen($voucher) < 5) {
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captiveportal_syslog("{$voucher} invalid: Too short!");
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continue; // seems too short to be a voucher!
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}
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unset($output);
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$_gb = exec("/usr/local/bin/voucher -c {$g['varetc_path']}/voucher_{$cpzone}.cfg -k {$g['varetc_path']}/voucher_{$cpzone}.public -- $v", $output);
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list($status, $roll, $nr) = explode(" ", $output[0]);
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if ($status == "OK") {
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// check if we have this ticket on a registered roll for this ticket
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if ($tickets_per_roll[$roll] && ($nr <= $tickets_per_roll[$roll])) {
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// voucher is from a registered roll.
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if (!isset($active_vouchers[$roll])) {
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$active_vouchers[$roll] = voucher_read_active_db($roll);
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}
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// valid voucher. Store roll# and ticket#
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if (!empty($active_vouchers[$roll][$voucher])) {
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$active_dirty = true;
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unset($active_vouchers[$roll][$voucher]);
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}
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// check if voucher already marked as used
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if (!isset($bitstring[$roll])) {
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$bitstring[$roll] = voucher_read_used_db($roll);
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}
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$pos = $nr >> 3; // divide by 8 -> octet
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$mask = 1 << ($nr % 8);
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// mark bit for this voucher as used
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if (!(ord($bitstring[$roll][$pos]) & $mask)) {
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$bitstring[$roll][$pos] = chr(ord($bitstring[$roll][$pos]) | $mask);
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}
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captiveportal_syslog("{$voucher} ({$roll}/{$nr}) forced to expire");
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/* Check if this voucher has any active sessions */
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$cpentry = captiveportal_read_db("WHERE username = '{$voucher}'");
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if (!empty($cpentry) && !empty($cpentry[0])) {
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if (empty($cpzoneid) && !empty(config_get_path("captiveportal/{$cpzone}"))) {
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$cpzoneid = config_get_path("captiveportal/{$cpzone}/zoneid");
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}
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$cpentry = $cpentry[0];
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captiveportal_disconnect($cpentry, 13);
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captiveportal_logportalauth($cpentry[4], $cpentry[3], $cpentry[2], "FORCEFULLY TERMINATING VOUCHER {$voucher} SESSION");
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$unsetindexes[] = $cpentry[5];
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}
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} else {
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captiveportal_syslog(sprintf(gettext('%1$s (%2$s/%3$s): not found on any registered Roll'), $voucher, $roll, $nr));
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}
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} else {
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// hmm, thats weird ... not what I expected
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captiveportal_syslog(sprintf(gettext('%1$s invalid: %2$s!!'), $voucher, $output[0]));
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}
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}
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// Refresh active DBs
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if ($active_dirty == true) {
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foreach ($active_vouchers as $roll => $active) {
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voucher_write_active_db($roll, $active);
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}
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/* perform in-use vouchers expiration using check_reload_status */
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send_event("service sync vouchers");
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} else {
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$active_vouchers = array();
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}
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// Write back the used DB's
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if (is_array($bitstring)) {
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foreach ($bitstring as $roll => $used) {
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if (is_array($used)) {
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foreach ($used as $u) {
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voucher_write_used_db($roll, base64_encode($u));
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}
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} else {
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voucher_write_used_db($roll, base64_encode($used));
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}
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}
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}
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unlock($voucherlck);
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/* Write database */
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if (!empty($unsetindexes)) {
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captiveportal_remove_entries($unsetindexes);
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}
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// XMLRPC Call over to the other node
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if (captiveportal_xmlrpc_sync_get_details($syncip, $syncport,
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$syncuser, $syncpass, $carp_loop)) {
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$rpc_client = new pfsense_xmlrpc_client();
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$rpc_client->setConnectionData($syncip, $syncport, $syncuser, $syncpass);
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$rpc_client->set_noticefile("CaptivePortalVouchersSync");
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$arguments = array(
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'active_and_used_vouchers_bitmasks' => $bitstring,
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'active_vouchers' => $active_vouchers
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);
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$rpc_client->xmlrpc_method('captive_portal_sync',
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array(
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'op' => 'write_vouchers',
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'zone' => $cpzone,
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'arguments' => base64_encode(serialize($arguments))
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)
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);
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}
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return true;
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}
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/*
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* Authenticate a voucher and return the remaining time credit in minutes
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* if $test is set, don't mark the voucher as used nor add it to the list
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* of active vouchers
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* If $test is set, simply test the voucher. Don't change anything
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* but return a more verbose error and result message back
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*/
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function voucher_auth($voucher_received, $test = 0, $carp_loop = false) {
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global $g, $cpzone, $dbc;
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if (!config_path_enabled("voucher/{$cpzone}")) {
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return 0;
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}
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$voucherlck = lock("voucher{$cpzone}", LOCK_EX);
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// read rolls into assoc array with rollid as key and minutes as value
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$tickets_per_roll = array();
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$minutes_per_roll = array();
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foreach (config_get_path("voucher/{$cpzone}/roll", []) as $rollent) {
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$tickets_per_roll[$rollent['number']] = $rollent['count'];
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$minutes_per_roll[$rollent['number']] = $rollent['minutes'];
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}
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// split into an array. Useful for multiple vouchers given
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$a_vouchers_received = preg_split("/[\t\n\r ]+/s", $voucher_received);
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$error = 0;
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$test_result = array(); // used to display for voucher test option in GUI
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$total_minutes = 0;
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$first_voucher = "";
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$first_voucher_roll = 0;
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// go through all received vouchers, check their valid and extract
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// Roll# and Ticket# using the external readvoucher binary
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foreach ($a_vouchers_received as $voucher) {
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$v = escapeshellarg($voucher);
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if (strlen($voucher) < 5) {
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$voucher_err_text = sprintf(gettext("%s invalid: Too short!"), $voucher);
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$test_result[] = $voucher_err_text;
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captiveportal_syslog($voucher_err_text);
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$error++;
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continue; // seems too short to be a voucher!
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}
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$result = exec("/usr/local/bin/voucher -c {$g['varetc_path']}/voucher_{$cpzone}.cfg -k {$g['varetc_path']}/voucher_{$cpzone}.public -- $v");
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list($status, $roll, $nr) = explode(" ", $result);
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if ($status == "OK") {
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if (!$first_voucher) {
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// store first voucher. Thats the one we give the timecredit
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$first_voucher = $voucher;
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$first_voucher_roll = $roll;
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}
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// check if we have this ticket on a registered roll for this ticket
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if ($tickets_per_roll[$roll] && ($nr <= $tickets_per_roll[$roll])) {
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// voucher is from a registered roll.
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if (!isset($active_vouchers[$roll])) {
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$active_vouchers[$roll] = voucher_read_active_db($roll);
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}
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// valid voucher. Store roll# and ticket#
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if (!empty($active_vouchers[$roll][$voucher])) {
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list($timestamp, $minutes) = explode(",", $active_vouchers[$roll][$voucher]);
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// we have an already active voucher here.
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$remaining = intval((($timestamp + (60*$minutes)) - time())/60);
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$test_result[] = sprintf(gettext('%1$s (%2$s/%3$s) active and good for %4$d Minutes'), $voucher, $roll, $nr, $remaining);
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$total_minutes += $remaining;
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} else {
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// voucher not used. Check if ticket Id is on the roll (not too high)
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// and if the ticket is marked used.
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// check if voucher already marked as used
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if (!isset($bitstring[$roll])) {
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$bitstring[$roll] = voucher_read_used_db($roll);
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}
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$pos = $nr >> 3; // divide by 8 -> octet
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$mask = 1 << ($nr % 8);
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if (ord($bitstring[$roll][$pos]) & $mask) {
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$voucher_err_text = sprintf(gettext('%1$s (%2$s/%3$s) already used and expired'), $voucher, $roll, $nr);
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$test_result[] = $voucher_err_text;
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captiveportal_syslog($voucher_err_text);
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$total_minutes = -1; // voucher expired
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$error++;
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} else {
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// mark bit for this voucher as used
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$bitstring[$roll][$pos] = chr(ord($bitstring[$roll][$pos]) | $mask);
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$test_result[] = sprintf(gettext('%1$s (%2$s/%3$s) good for %4$s Minutes'), $voucher, $roll, $nr, $minutes_per_roll[$roll]);
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$total_minutes += $minutes_per_roll[$roll];
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}
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}
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} else {
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$voucher_err_text = sprintf(gettext('%1$s (%2$s/%3$s): not found on any registered Roll'), $voucher, $roll, $nr);
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$test_result[] = $voucher_err_text;
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captiveportal_syslog($voucher_err_text);
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}
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} else {
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// hmm, thats weird ... not what I expected
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$voucher_err_text = sprintf(gettext('%1$s invalid: %2$s !!'), $voucher, $result);
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$test_result[] = $voucher_err_text;
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captiveportal_syslog($voucher_err_text);
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$error++;
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}
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}
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// if this was a test call, we're done. Return the result.
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if ($test) {
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if ($error) {
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$test_result[] = gettext("Access denied!");
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} else {
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$test_result[] = sprintf(gettext("Access granted for %d Minutes in total."), $total_minutes);
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}
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unlock($voucherlck);
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return $test_result;
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318
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}
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// if we had an error (one of the vouchers is invalid), return 0.
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// Discussion: we could return the time remaining for good vouchers, but then
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// the user wouldn't know that he used at least one invalid voucher.
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if ($error) {
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unlock($voucherlck);
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325
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if ($total_minutes > 0) { // probably not needed, but want to make sure
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$total_minutes = 0; // we only report -1 (expired) or 0 (no access)
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}
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return $total_minutes; // well, at least one voucher had errors. Say NO ACCESS
|
|
329
|
}
|
|
330
|
|
|
331
|
// All given vouchers were valid and this isn't simply a test.
|
|
332
|
// Write back the used DB's
|
|
333
|
if (is_array($bitstring)) {
|
|
334
|
foreach ($bitstring as $roll => $used) {
|
|
335
|
if (is_array($used)) {
|
|
336
|
foreach ($used as $u) {
|
|
337
|
voucher_write_used_db($roll, base64_encode($u));
|
|
338
|
}
|
|
339
|
} else {
|
|
340
|
voucher_write_used_db($roll, base64_encode($used));
|
|
341
|
}
|
|
342
|
}
|
|
343
|
}
|
|
344
|
|
|
345
|
// Active DB: we only add the first voucher if multiple given
|
|
346
|
// and give that one all the time credit. This allows the user to logout and
|
|
347
|
// log in later using just the first voucher. It also keeps username limited
|
|
348
|
// to one voucher and that voucher shows the correct time credit in 'active vouchers'
|
|
349
|
if (!empty($active_vouchers[$first_voucher_roll][$first_voucher])) {
|
|
350
|
list($timestamp, $minutes) = explode(",", $active_vouchers[$first_voucher_roll][$first_voucher]);
|
|
351
|
} else {
|
|
352
|
$timestamp = time(); // new voucher
|
|
353
|
$minutes = $total_minutes;
|
|
354
|
}
|
|
355
|
|
|
356
|
$active_vouchers[$first_voucher_roll][$first_voucher] = "$timestamp,$minutes";
|
|
357
|
voucher_write_active_db($first_voucher_roll, $active_vouchers[$first_voucher_roll]);
|
|
358
|
|
|
359
|
// XMLRPC Call over to the other node
|
|
360
|
if (captiveportal_xmlrpc_sync_get_details($syncip, $syncport,
|
|
361
|
$syncuser, $syncpass, $carp_loop)) {
|
|
362
|
$rpc_client = new pfsense_xmlrpc_client();
|
|
363
|
$rpc_client->setConnectionData($syncip, $syncport, $syncuser, $syncpass);
|
|
364
|
$rpc_client->set_noticefile("CaptivePortalVouchersSync");
|
|
365
|
$arguments = array(
|
|
366
|
'active_and_used_vouchers_bitmasks' => $bitstring,
|
|
367
|
'active_vouchers' => array(
|
|
368
|
$first_voucher_roll => $active_vouchers[$first_voucher_roll]
|
|
369
|
)
|
|
370
|
);
|
|
371
|
|
|
372
|
$rpc_client->xmlrpc_method('captive_portal_sync',
|
|
373
|
array(
|
|
374
|
'op' => 'write_vouchers',
|
|
375
|
'zone' => $cpzone,
|
|
376
|
'arguments' => base64_encode(serialize($arguments))
|
|
377
|
)
|
|
378
|
);
|
|
379
|
}
|
|
380
|
|
|
381
|
/* perform in-use vouchers expiration using check_reload_status */
|
|
382
|
send_event("service sync vouchers");
|
|
383
|
|
|
384
|
unlock($voucherlck);
|
|
385
|
|
|
386
|
return $total_minutes;
|
|
387
|
}
|
|
388
|
|
|
389
|
function voucher_configure() {
|
|
390
|
global $g, $cpzone;
|
|
391
|
|
|
392
|
foreach (config_get_path('voucher', []) as $voucherzone => $vcfg) {
|
|
393
|
if (is_platform_booting()) {
|
|
394
|
echo gettext("Enabling voucher support... ");
|
|
395
|
}
|
|
396
|
$cpzone = $voucherzone;
|
|
397
|
$error = voucher_configure_zone();
|
|
398
|
if (is_platform_booting()) {
|
|
399
|
if ($error) {
|
|
400
|
echo "error\n";
|
|
401
|
} else {
|
|
402
|
echo "done\n";
|
|
403
|
}
|
|
404
|
}
|
|
405
|
}
|
|
406
|
}
|
|
407
|
|
|
408
|
function voucher_configure_zone() {
|
|
409
|
global $g, $cpzone;
|
|
410
|
|
|
411
|
if (!config_path_enabled("voucher/{$cpzone}")) {
|
|
412
|
return 0;
|
|
413
|
}
|
|
414
|
|
|
415
|
$voucherlck = lock("voucher{$cpzone}", LOCK_EX);
|
|
416
|
|
|
417
|
/* write public key used to verify vouchers */
|
|
418
|
$pubkey = base64_decode(config_get_path("voucher/{$cpzone}/publickey"));
|
|
419
|
$fd = fopen("{$g['varetc_path']}/voucher_{$cpzone}.public", "w");
|
|
420
|
if (!$fd) {
|
|
421
|
captiveportal_syslog("Voucher error: cannot write voucher.public");
|
|
422
|
unlock($voucherlck);
|
|
423
|
return 1;
|
|
424
|
}
|
|
425
|
fwrite($fd, $pubkey);
|
|
426
|
fclose($fd);
|
|
427
|
@chmod("{$g['varetc_path']}/voucher_{$cpzone}.public", 0600);
|
|
428
|
|
|
429
|
/* write config file used by voucher binary to decode vouchers */
|
|
430
|
$fd = fopen("{$g['varetc_path']}/voucher_{$cpzone}.cfg", "w");
|
|
431
|
if (!$fd) {
|
|
432
|
printf(gettext("Error: cannot write voucher.cfg") . "\n");
|
|
433
|
unlock($voucherlck);
|
|
434
|
return 1;
|
|
435
|
}
|
|
436
|
$voucher_config = config_get_path("voucher/{$cpzone}");
|
|
437
|
fwrite($fd, "{$voucher_config['rollbits']},{$voucher_config['ticketbits']},{$voucher_config['checksumbits']},{$voucher_config['magic']},{$voucher_config['charset']}\n");
|
|
438
|
fclose($fd);
|
|
439
|
@chmod("{$g['varetc_path']}/voucher_{$cpzone}.cfg", 0600);
|
|
440
|
unlock($voucherlck);
|
|
441
|
|
|
442
|
return 0;
|
|
443
|
}
|
|
444
|
|
|
445
|
/* write bitstring of used vouchers to ramdisk.
|
|
446
|
* Bitstring must already be base64_encoded!
|
|
447
|
*/
|
|
448
|
function voucher_write_used_db($roll, $vdb) {
|
|
449
|
global $g, $cpzone;
|
|
450
|
|
|
451
|
$fd = fopen("{$g['vardb_path']}/voucher_{$cpzone}_used_$roll.db", "w");
|
|
452
|
if ($fd) {
|
|
453
|
fwrite($fd, $vdb . "\n");
|
|
454
|
fclose($fd);
|
|
455
|
} else {
|
|
456
|
voucher_log(LOG_ERR, sprintf(gettext('cant write %1$s/voucher_%2$s_used_%3$s.db'), g_get('vardb_path'), $cpzone, $roll));
|
|
457
|
}
|
|
458
|
}
|
|
459
|
|
|
460
|
/* return assoc array of active vouchers with activation timestamp
|
|
461
|
* voucher is index.
|
|
462
|
*/
|
|
463
|
function voucher_read_active_db($roll) {
|
|
464
|
global $g, $cpzone;
|
|
465
|
|
|
466
|
$active = array();
|
|
467
|
$dirty = 0;
|
|
468
|
$file = "{$g['vardb_path']}/voucher_{$cpzone}_active_$roll.db";
|
|
469
|
if (file_exists($file)) {
|
|
470
|
$fd = fopen($file, "r");
|
|
471
|
if ($fd) {
|
|
472
|
while (!feof($fd)) {
|
|
473
|
$line = trim(fgets($fd));
|
|
474
|
if ($line) {
|
|
475
|
list($voucher, $timestamp, $minutes) = explode(",", $line); // voucher,timestamp
|
|
476
|
if ((($timestamp + (60*$minutes)) - time()) > 0) {
|
|
477
|
$active[$voucher] = "$timestamp,$minutes";
|
|
478
|
} else {
|
|
479
|
$dirty=1;
|
|
480
|
}
|
|
481
|
}
|
|
482
|
}
|
|
483
|
fclose($fd);
|
|
484
|
if ($dirty) { // if we found expired entries, lets remove them
|
|
485
|
voucher_write_active_db($roll, $active);
|
|
486
|
}
|
|
487
|
}
|
|
488
|
}
|
|
489
|
return $active;
|
|
490
|
}
|
|
491
|
|
|
492
|
/* store array of active vouchers back to DB */
|
|
493
|
function voucher_write_active_db($roll, $active) {
|
|
494
|
global $g, $cpzone;
|
|
495
|
|
|
496
|
if (!is_array($active)) {
|
|
497
|
return;
|
|
498
|
}
|
|
499
|
$fd = fopen("{$g['vardb_path']}/voucher_{$cpzone}_active_$roll.db", "w");
|
|
500
|
if ($fd) {
|
|
501
|
foreach ($active as $voucher => $value) {
|
|
502
|
fwrite($fd, "$voucher,$value\n");
|
|
503
|
}
|
|
504
|
fclose($fd);
|
|
505
|
}
|
|
506
|
}
|
|
507
|
|
|
508
|
/* return how many vouchers are marked used on a roll */
|
|
509
|
function voucher_used_count($roll) {
|
|
510
|
global $g, $cpzone;
|
|
511
|
|
|
512
|
$bitstring = voucher_read_used_db($roll);
|
|
513
|
$max = strlen($bitstring) * 8;
|
|
514
|
$used = 0;
|
|
515
|
for ($i = 1; $i <= $max; $i++) {
|
|
516
|
// check if ticket already used or not.
|
|
517
|
$pos = $i >> 3; // divide by 8 -> octet
|
|
518
|
$mask = 1 << ($i % 8); // mask to test bit in octet
|
|
519
|
if (ord($bitstring[$pos]) & $mask) {
|
|
520
|
$used++;
|
|
521
|
}
|
|
522
|
}
|
|
523
|
unset($bitstring);
|
|
524
|
|
|
525
|
return $used;
|
|
526
|
}
|
|
527
|
|
|
528
|
function voucher_read_used_db($roll) {
|
|
529
|
global $g, $cpzone;
|
|
530
|
|
|
531
|
$vdb = "";
|
|
532
|
$file = "{$g['vardb_path']}/voucher_{$cpzone}_used_$roll.db";
|
|
533
|
if (file_exists($file)) {
|
|
534
|
$fd = fopen($file, "r");
|
|
535
|
if ($fd) {
|
|
536
|
$vdb = trim(fgets($fd));
|
|
537
|
fclose($fd);
|
|
538
|
} else {
|
|
539
|
voucher_log(LOG_ERR, sprintf(gettext('cant read %1$s/voucher_%2$s_used_%3$s.db'), g_get('vardb_path'), $cpzone, $roll));
|
|
540
|
}
|
|
541
|
}
|
|
542
|
return base64_decode($vdb);
|
|
543
|
}
|
|
544
|
|
|
545
|
function voucher_unlink_db($roll) {
|
|
546
|
global $g, $cpzone;
|
|
547
|
@unlink("{$g['vardb_path']}/voucher_{$cpzone}_used_$roll.db");
|
|
548
|
@unlink("{$g['vardb_path']}/voucher_{$cpzone}_active_$roll.db");
|
|
549
|
}
|
|
550
|
|
|
551
|
/* we share the log with captiveportal for now */
|
|
552
|
function voucher_log($priority, $message) {
|
|
553
|
|
|
554
|
$message = trim($message);
|
|
555
|
openlog("logportalauth", LOG_PID, LOG_LOCAL4);
|
|
556
|
syslog($priority, sprintf(gettext("Voucher: %s"), $message));
|
|
557
|
closelog();
|
|
558
|
}
|
|
559
|
|
|
560
|
/* Perform natural expiration of vouchers
|
|
561
|
* Called during reboot -> system_reboot_cleanup() and every active voucher change
|
|
562
|
*/
|
|
563
|
function voucher_save_db_to_config() {
|
|
564
|
global $g;
|
|
565
|
|
|
566
|
foreach (config_get_path('voucher', []) as $zone => $vcfg) {
|
|
567
|
if (config_path_enabled("voucher/{$zone}")) {
|
|
568
|
foreach (config_get_path("voucher/{$zone}/roll", []) as $key => $rollent) {
|
|
569
|
// read_active_db will remove expired vouchers that are still active
|
|
570
|
voucher_read_active_db($rollent['number']);
|
|
571
|
}
|
|
572
|
}
|
|
573
|
}
|
|
574
|
}
|
|
575
|
|
|
576
|
?>
|