<?php
class LinuxAuth {
/** @author Marcus Brasizza
*
* @version 1.0.0
*/
private $pathShadow = '/etc/shadow';
private $pathPasswd = '/etc/passwd';
private $authConfig = '/etc/sysconfig/authconfig';
private $authConfigTMP = '/tmp/authconfig';
private $content = null;
private $useType = null;
/**
* Constructor
*/
function __construct() {
exec('cat ' . $this->authConfig . ' > '. $this->authConfigTMP );
$authCon = file_get_contents($this->authConfigTMP);
$strFind = 'USESHADOW';
$tamFind = strlen($strFind);
$posShadow = strpos($authCon, $strFind);
if ($posShadow !== false) {
$useFind = trim(substr($authCon, ($posShadow + $tamFind + 1), 3));
if ($useFind == 'yes') {
$this->useType = 'shadow';
exec('cat /etc/shadow > /tmp/shadow');
$file = file('/tmp/shadow');
$this->content = $file;
unlink('/tmp/shadow');
} else {
$this->useType = 'passwd';
exec('cat /etc/passwd /tmp/passwd');
$file = file('/tmp/passwd');
$this->content = $file;
unlink('/tmp/passwd');
}
}
}
final private function getUserInfo($userInfo) {
if (isset($this->content)) {
foreach ($this->content as $line) {
if (strpos($line, $userInfo) !== false) {
$l = explode(':', $line);
$user = trim($l[0]);
$pass = trim($l[1]);
$info = new stdClass();
$info->username = $user;
$info->password = $pass;
return $info;
}
}
return false;
}
}
/**
* Username Access
* @param Username $username
* @param Password $password
* @return boolean true if the user is in the password file system
* @access public
* @uses $myauth->authUser('myUsername','mypasswordBased64');
*/
public function authUser($username,$password){
$myInfo = $this->getUserInfo($username);
if($myInfo != false){
$password = base64_decode($password);
$passHashed = crypt($password,$myInfo->password);
if( trim($passHashed) === trim($myInfo->password)){
return true;
}else{
return false;
}
}
return false;
}
}
?>
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