<?php
/**
* @file multiotp.cli.proxy.php
* @brief Command line calling the proxy of the multiOTP PHP class.
*
* multiOTP PHP CLI proxy - Strong two-factor authentication PHP class
* http://www.multiotp.net
*
* Visit http://forum.multiotp.net/ for additional support.
*
* Donation are always welcome! Please check http://www.multiotp.net
* and you will find the magic button ;-)
*
*
* PHP 5.3.0 or higher is supported.
*
* @author Andre Liechti, SysCo systemes de communication sa, <info@multiotp.net>
* @version 5.6.1.5
* @date 2019-10-23
* @since 2010-06-08
* @copyright (c) 2010-2019 SysCo systemes de communication sa
* @copyright GNU Lesser General Public License
*
*//*
*
* LICENCE
*
* Copyright (c) 2014-2019 SysCo systemes de communication sa
* SysCo (tm) is a trademark of SysCo systemes de communication sa
* (http://www.sysco.ch)
* All rights reserved.
*
* This file is part of the MultiOTP PHP class
*
* MultiOTP PHP class is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* MultiOTP PHP class is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with MultiOTP PHP class.
* If not, see <http://www.gnu.org/licenses/>.
*
*
* Command line usage
*
* Same usage as multiotp.cli.header.php. It's just a proxy to call
* the web version of multiotp.cli.header.php, which could be cached,
* giving a massive speed improvement on "weak" machines like Raspberry Pi.
*
* If the web version is not responding, it will fallback nicely and
* will do a require_once of the local proxy file.
*
*********************************************************************/
@set_time_limit(0); // It can take a lot of time...
global $argc;
global $argv;
// Define the stream context
if (function_exists("stream_context_set_default")) {
$default_ssl_context = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
'disable_compression' => true,
'ciphers' => 'ALL!EXPORT!EXPORT40!EXPORT56!aNULL!LOW!RC4'
)
);
$default_context = stream_context_set_default($default_ssl_context);
}
$proxy_full_url = isset($proxy_full_url) ? $proxy_full_url : "http://127.0.0.1:18081/";
$timeout = isset($timeout)?intval($timeout):15;
$local_proxy_file = isset($local_proxy_file) ? $local_proxy_file : "multiotp.proxy.php";
// Clean quotes of the parameters if any
if (!function_exists('clean_quotes')) {
function clean_quotes($value)
{
$cleaned = false;
$var = $value;
if ((('"' == substr($var,0,1)) || ("'" == substr($var,0,1))) && (('"' == substr($var,-1)) || ("'" == substr($var,-1)))) {
$var = substr($var, 1, strlen($var)-2);
$cleaned = true;
}
if ($cleaned) {
$var = clean_quotes($var);
}
return $var;
}
}
$value_unencoded = '';
// $_SERVER["argv"][0] is useless, it's the name of the script
$argv = isset($_SERVER["argv"]) ? $_SERVER["argv"] : (isset($argv) ? $argv : "");
$argc = intval(isset($_SERVER["argc"]) ? $_SERVER["argc"] : (isset($argc) ? $argc : 0));
for ($arg_loop=1; $arg_loop < $argc; $arg_loop++) {
$current_arg = clean_quotes($argv[$arg_loop]);
if ('' != $value_unencoded) {
$value_unencoded.= chr(0);
}
$value_unencoded.= $current_arg;
}
$key = 'argv';
$value = base64_encode($value_unencoded);
$multiotp_error_level_received = FALSE;
$multiotp_error_level = 99; // Unknown error
$post_url = $proxy_full_url;
$result = '';
$content_to_post = $key.'='.$value;
$pos = mb_strpos($post_url, '://');
if (FALSE === $pos) {
$protocol = '';
} else {
switch (mb_strtolower(substr($post_url,0,$pos))) {
case 'https':
case 'ssl':
$protocol = 'ssl://';
break;
case 'tls':
$protocol = 'tls://';
break;
default:
$protocol = '';
break;
}
$post_url = substr($post_url,$pos+3);
}
$pos = mb_strpos($post_url, '/');
if (FALSE === $pos) {
$host = $post_url;
$url = '/';
} else {
$host = substr($post_url,0,$pos);
$url = substr($post_url,$pos); // And not +1 as we want the / at the beginning
}
$pos = mb_strpos($host, ':');
if (FALSE === $pos) {
$port = 80;
} else {
$port = substr($host,$pos+1);
$host = substr($host,0,$pos);
}
$errno = 0;
$errdesc = 0;
$fp = @fsockopen($protocol.$host, $port, $errno, $errdesc, $timeout);
if (FALSE !== $fp) {
$info['timed_out'] = FALSE;
fputs($fp, "POST ".$url." HTTP/1.0\r\n");
fputs($fp, "Content-Type: application/x-www-form-urlencoded\r\n");
fputs($fp, "Content-Length: ".strlen($content_to_post)."\r\n");
fputs($fp, "User-Agent: multiOTP proxy\r\n");
fputs($fp, "Host: ".$host."\r\n");
fputs($fp, "\r\n");
fputs($fp, $content_to_post);
fputs($fp, "\r\n");
stream_set_blocking($fp, TRUE);
stream_set_timeout($fp, 86400); // It can take a lot of time, if we are doing AD/LDAP sync for example
$info = stream_get_meta_data($fp);
$reply = '';
$last_length = 0;
while ((!feof($fp)) && ((!$info['timed_out']) || ($last_length != strlen($reply)))) {
$last_length = strlen($reply);
$reply.= fgets($fp, 1024);
$info = stream_get_meta_data($fp);
@ob_flush(); // Avoid notice if any (if the buffer is empty and therefore cannot be flushed)
flush();
}
fclose($fp);
if ($info['timed_out']) {
// error_log("Warning: timeout after $timeout seconds for $protocol$host:$port$url with a result code of $errno ($errdesc)");
} else {
// error_log("CLI ok");
$pos = mb_strpos(mb_strtolower($reply), "\r\n\r\n");
$header = substr($reply, 0, $pos);
$header_array = explode("\r\n", $header);
foreach($header_array as $one_header) {
$one_header_array = explode(":", $one_header, 2);
if (isset($one_header_array[1])) {
if ('X-multiOTP-Error-Level' == trim($one_header_array[0])) {
$multiotp_error_level_received = TRUE;
$multiotp_error_level = intval(trim($one_header_array[1]));
break;
}
}
}
$answer = substr($reply, $pos + 4);
$result = $answer;
if ($errno > 0) {
// Error ?
}
}
}
if (!$multiotp_error_level_received) {
require_once(dirname(__FILE__)."/".$local_proxy_file);
} else {
echo $result;
exit($multiotp_error_level);
}
?>
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