mirror of
https://github.com/Yubico/yubikey-val.git
synced 2024-11-29 09:24:12 +01:00
355 lines
11 KiB
PHP
355 lines
11 KiB
PHP
<?php
|
|
|
|
require_once 'ykval-config.php';
|
|
require_once 'ykval-common.php';
|
|
require_once 'lib/Db.php';
|
|
|
|
class SyncLib
|
|
{
|
|
public $syncServers = null;
|
|
public $dbConn = null;
|
|
|
|
function __construct()
|
|
{
|
|
global $baseParams;
|
|
$this->syncServers = explode(";", $baseParams['__YKVAL_SYNC_POOL__']);
|
|
$this->db=new Db($baseParams['__YKVAL_DB_HOST__'],
|
|
$baseParams['__YKVAL_DB_USER__'],
|
|
$baseParams['__YKVAL_DB_PW__'],
|
|
$baseParams['__YKVAL_DB_NAME__']);
|
|
$this->db->connect();
|
|
$this->random_key=rand(0,1<<16);
|
|
}
|
|
|
|
function DbTimeToUnix($db_time)
|
|
{
|
|
$unix=strptime($db_time, '%F %H:%M:%S');
|
|
return mktime($unix[tm_hour], $unix[tm_min], $unix[tm_sec], $unix[tm_mon]+1, $unix[tm_mday], $unix[tm_year]+1900);
|
|
}
|
|
|
|
function UnixToDbTime($unix)
|
|
{
|
|
return date('Y-m-d H:i:s', $unix);
|
|
}
|
|
function getServer($index)
|
|
{
|
|
if (isset($this->syncServers[$index])) return $this->syncServers[$index];
|
|
else return "";
|
|
}
|
|
function getLast()
|
|
{
|
|
$res=$this->db->last('queue', 1);
|
|
parse_str($res['info'], $info);
|
|
return array('modified'=>$this->DbTimeToUnix($res['modified_time']),
|
|
'otp'=>$res['otp'],
|
|
'server'=>$res['server'],
|
|
'yk_identity'=>$info['yk_identity'],
|
|
'yk_counter'=>$info['yk_counter'],
|
|
'yk_use'=>$info['yk_use'],
|
|
'yk_high'=>$info['yk_high'],
|
|
'yk_low'=>$info['yk_low']);
|
|
}
|
|
public function getQueueLength()
|
|
{
|
|
return count($this->db->last('queue', NULL));
|
|
}
|
|
public function queue($otpParams, $localParams)
|
|
{
|
|
|
|
|
|
$info='yk_identity=' . $otpParams['yk_identity'] .
|
|
'&yk_counter=' . $otpParams['yk_counter'] .
|
|
'&yk_use=' . $otpParams['yk_use'] .
|
|
'&yk_high=' . $otpParams['yk_high'] .
|
|
'&yk_low=' . $otpParams['yk_low'];
|
|
|
|
$this->otpParams = $otpParams;
|
|
$this->localParams = $localParams;
|
|
|
|
|
|
$res=True;
|
|
foreach ($this->syncServers as $server) {
|
|
|
|
if(! $this->db->save('queue', array('modified_time'=>$this->UnixToDbTime($otpParams['modified']),
|
|
'otp'=>$otpParams['otp'],
|
|
'server'=>$server,
|
|
'random_key'=>$this->random_key,
|
|
'info'=>$info))) $res=False;
|
|
}
|
|
return $res;
|
|
}
|
|
public function getNumberOfServers()
|
|
{
|
|
if (is_array($this->syncServers)) return count($this->syncServers);
|
|
else return 0;
|
|
}
|
|
|
|
private function log($level, $msg, $params=NULL)
|
|
{
|
|
$logMsg="ykval-synclib:" . $level . ":" . $msg;
|
|
if ($params) $logMsg .= " modified=" . $params['modified'] .
|
|
" yk_identity=" . $params['yk_identity'] .
|
|
" yk_counter=" . $params['yk_counter'] .
|
|
" yk_use=" . $params['yk_use'] .
|
|
" yk_high=" . $params['yk_high'] .
|
|
" yk_low=" . $params['yk_low'];
|
|
error_log($logMsg);
|
|
}
|
|
private function getLocalParams($yk_identity)
|
|
{
|
|
$this->log("notice", "searching for " . $yk_identity . " (" . modhex2b64($yk_identity) . ") in local db");
|
|
$res = $this->db->lastBy('yubikeys', 'publicName', modhex2b64($yk_identity));
|
|
$localParams=array('modified'=>$this->DbTimeToUnix($res['accessed']),
|
|
'otp'=>$res['otp'],
|
|
'yk_identity'=>$yk_identity,
|
|
'yk_counter'=>$res['counter'],
|
|
'yk_use'=>$res['sessionUse'],
|
|
'yk_high'=>$res['high'],
|
|
'yk_low'=>$res['low']);
|
|
|
|
$this->log("notice", "counter found in db ", $localParams);
|
|
|
|
return $localParams;
|
|
|
|
}
|
|
|
|
private function parseParamsFromMultiLineString($str)
|
|
{
|
|
preg_match("/^modified=([0-9]*)/m", $str, $out);
|
|
$resParams['modified']=$out[1];
|
|
preg_match("/^yk_identity=([[:alpha:]]*)/m", $str, $out);
|
|
$resParams['yk_identity']=$out[1];
|
|
preg_match("/^yk_counter=([0-9]*)/m", $str, $out);
|
|
$resParams['yk_counter']=$out[1];
|
|
preg_match("/^yk_use=([0-9]*)/m", $str, $out);
|
|
$resParams['yk_use']=$out[1];
|
|
preg_match("/^yk_high=([0-9]*)/m", $str, $out);
|
|
$resParams['yk_high']=$out[1];
|
|
preg_match("/^yk_low=([0-9]*)/m", $str, $out);
|
|
$resParams['yk_low']=$out[1];
|
|
|
|
return $resParams;
|
|
}
|
|
|
|
public function updateDbCounters($params)
|
|
{
|
|
|
|
|
|
$res=$this->db->lastBy('yubikeys', 'publicName', modhex2b64($params['yk_identity']));
|
|
if (isset($res['id'])) {
|
|
if(! $this->db->update('yubikeys',
|
|
$res['id'],
|
|
array('accessed'=>$this->UnixToDbTime($params['modified']),
|
|
'counter'=>$params['yk_counter'],
|
|
'sessionUse'=>$params['yk_use'],
|
|
'low'=>$params['yk_low'],
|
|
'high'=>$params['yk_high'])))
|
|
{
|
|
error_log("ykval-synclib:critical: failed to update internal DB with new counters");
|
|
return false;
|
|
} else {
|
|
$this->log("notice", "updated database ", $params);
|
|
return true;
|
|
}
|
|
} else return false;
|
|
}
|
|
|
|
public function countersHigherThan($p1, $p2)
|
|
{
|
|
if ($p1['yk_counter'] > $p2['yk_counter'] ||
|
|
($p1['yk_counter'] == $p2['yk_counter'] &&
|
|
$p1['yk_use'] > $p2['yk_use'])) return true;
|
|
else return false;
|
|
}
|
|
|
|
public function countersHigherThanOrEqual($p1, $p2)
|
|
{
|
|
if ($p1['yk_counter'] > $p2['yk_counter'] ||
|
|
($p1['yk_counter'] == $p2['yk_counter'] &&
|
|
$p1['yk_use'] >= $p2['yk_use'])) return true;
|
|
else return false;
|
|
}
|
|
|
|
public function sync($ans_req)
|
|
{
|
|
/*
|
|
Construct URLs
|
|
*/
|
|
|
|
$urls=array();
|
|
$res=$this->db->findByMultiple('queue', array("modified_time"=>$this->UnixToDbTime($this->otpParams['modified']), "random_key"=>$this->random_key));
|
|
foreach ($res as $row) {
|
|
$urls[]=$row['server'] .
|
|
"?otp=" . $row['otp'] .
|
|
"&modified=" . $this->DbTimeToUnix($row['modified_time']) .
|
|
"&" . $row['info'];
|
|
}
|
|
|
|
/*
|
|
Send out requests
|
|
*/
|
|
if (count($urls)>=$ans_req) $ans_arr=$this->retrieveURLasync($urls, $ans_req);
|
|
else return false;
|
|
|
|
if (!is_array($ans_arr)) {
|
|
$this->log('warning', 'No responses from validation server pool');
|
|
$ans_arr=array();
|
|
}
|
|
|
|
/*
|
|
Parse responses
|
|
*/
|
|
$lastLocalParams=$this->getLocalParams($this->otpParams['yk_identity']);
|
|
$localParams = $this->localParams;
|
|
|
|
$this->answers = count($ans_arr);
|
|
$this->valid_answers = 0;
|
|
foreach ($ans_arr as $answer){
|
|
/* Parse out parameters from each response */
|
|
$resParams=$this->parseParamsFromMultiLineString($answer);
|
|
$this->log("notice", "local db contains ", $localParams);
|
|
$this->log("notice", "response contains ", $resParams);
|
|
|
|
/* Check if internal DB should be updated */
|
|
if ($this->countersHigherThan($resParams, $lastLocalParams)) {
|
|
$this->updateDbCounters($resParams);
|
|
}
|
|
|
|
/* Check for warnings
|
|
|
|
If received sync response have lower counters than locally saved
|
|
last counters (indicating that remote server wasn't synced)
|
|
*/
|
|
if ($this->countersHigherThan($localParams, $resParams)) {
|
|
$this->log("warning", "Remote server out of sync, local counters ", $localParams);
|
|
$this->log("warning", "Remote server out of sync, remote counters ", $resParams);
|
|
}
|
|
|
|
/* If received sync response have higher counters than locally saved
|
|
last counters (indicating that local server wasn't synced)
|
|
*/
|
|
if ($this->countersHigherThan($resParams, $localParams)) {
|
|
$this->log("warning", "Local server out of sync, local counters ", $localParams);
|
|
$this->log("warning", "Local server out of sync, remote counters ", $resParams);
|
|
}
|
|
|
|
/* If received sync response have higher counters than OTP counters
|
|
(indicating REPLAYED_OTP)
|
|
*/
|
|
if ($this->countersHigherThanOrEqual($resParams, $this->otpParams)) {
|
|
$this->log("warning", "replayed OTP, remote counters " , $resParams);
|
|
$this->log("warning", "replayed OTP, otp counters", $this->otpParams);
|
|
}
|
|
|
|
|
|
/* Check if answer marks OTP as valid */
|
|
if (!$this->countersHigherThanOrEqual($resParams, $this->otpParams)) $this->valid_answers++;
|
|
|
|
/* Delete entry from table */
|
|
preg_match('/url=(.*)\?/', $answer, $out);
|
|
$server=$out[1];
|
|
debug("server=" . $server);
|
|
$this->db->deleteByMultiple('queue', array("modified_time"=>$this->UnixToDbTime($this->otpParams['modified']), "random_key"=>$this->random_key, 'server'=>$server));
|
|
|
|
}
|
|
|
|
/* Return true if valid answers equals required answers.
|
|
Since we only obtain the required amount of answers from
|
|
retrieveAsync this indicates that all answers were actually valid.
|
|
Otherwise, return false. */
|
|
if ($this->valid_answers==$ans_req) return True;
|
|
else return False;
|
|
}
|
|
public function getNumberOfValidAnswers()
|
|
{
|
|
if (isset($this->valid_answers)) return $this->valid_answers;
|
|
else return 0;
|
|
}
|
|
public function getNumberOfAnswers()
|
|
{
|
|
if (isset($this->answers)) return $this->answers;
|
|
else return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
This function takes a list of URLs. It will return the content of
|
|
the first successfully retrieved URL, whose content matches ^OK.
|
|
The request are sent asynchronously. Some of the URLs can fail
|
|
with unknown host, connection errors, or network timeout, but as
|
|
long as one of the URLs given work, data will be returned. If all
|
|
URLs fail, data from some URL that did not match parameter $match
|
|
(defaults to ^OK) is returned, or if all URLs failed, false.
|
|
*/
|
|
function retrieveURLasync ($urls, $ans_req=1) {
|
|
$mh = curl_multi_init();
|
|
|
|
$ch = array();
|
|
foreach ($urls as $id => $url) {
|
|
$handle = curl_init();
|
|
|
|
curl_setopt($handle, CURLOPT_URL, $url);
|
|
curl_setopt($handle, CURLOPT_USERAGENT, "YK-VAL");
|
|
curl_setopt($handle, CURLOPT_RETURNTRANSFER, 1);
|
|
curl_setopt($handle, CURLOPT_FAILONERROR, true);
|
|
curl_setopt($handle, CURLOPT_TIMEOUT, 10);
|
|
|
|
curl_multi_add_handle($mh, $handle);
|
|
|
|
$ch[$handle] = $handle;
|
|
}
|
|
|
|
$str = false;
|
|
$ans_count = 0;
|
|
$ans_arr = array();
|
|
|
|
do {
|
|
while (($mrc = curl_multi_exec($mh, $active)) == CURLM_CALL_MULTI_PERFORM)
|
|
;
|
|
|
|
while ($info = curl_multi_info_read($mh)) {
|
|
debug ("YK-KSM multi", $info);
|
|
if ($info['result'] == CURL_OK) {
|
|
$str = curl_multi_getcontent($info['handle']);
|
|
debug($str);
|
|
if (preg_match("/status=OK/", $str)) {
|
|
$error = curl_error ($info['handle']);
|
|
$errno = curl_errno ($info['handle']);
|
|
$cinfo = curl_getinfo ($info['handle']);
|
|
debug("YK-KSM errno/error: " . $errno . "/" . $error, $cinfo);
|
|
$ans_count++;
|
|
debug("found entry");
|
|
$ans_arr[]="url=" . $cinfo['url'] . "\n" . $str;
|
|
}
|
|
|
|
if ($ans_count >= $ans_req) {
|
|
foreach ($ch as $h) {
|
|
curl_multi_remove_handle ($mh, $h);
|
|
curl_close ($h);
|
|
}
|
|
curl_multi_close ($mh);
|
|
|
|
return $ans_arr;
|
|
}
|
|
|
|
curl_multi_remove_handle ($mh, $info['handle']);
|
|
curl_close ($info['handle']);
|
|
unset ($ch[$info['handle']]);
|
|
}
|
|
|
|
curl_multi_select ($mh);
|
|
}
|
|
} while($active);
|
|
|
|
foreach ($ch as $h) {
|
|
curl_multi_remove_handle ($mh, $h);
|
|
curl_close ($h);
|
|
}
|
|
curl_multi_close ($mh);
|
|
|
|
return $str;
|
|
}
|
|
|
|
}
|
|
|
|
?>
|