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<?php |
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/* |
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* This file is part of the Ariadne Component Library. |
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* |
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* (c) Muze <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace arc\http; |
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/** |
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* This class parses a .htpasswd formatted string and extracts the users |
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* and encrypted passwords from it. |
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* Then you can check a username and password combination against this |
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* list. |
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*/ |
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class Htpasswd { |
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public $users = []; |
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/** |
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* The constructor needs a string with the contents of a htpasswd file |
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*/ |
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public function __construct($htpasswd) { |
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$lines = preg_split('/\r\n|\r|\n/',$htpasswd); |
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foreach ($lines as $line) { |
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if (strpos($line, ':')===false) { |
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continue; |
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} |
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list($user,$password) = array_map('trim', explode(':',$line)); |
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if ($user && $password) { |
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$this->users[$user] = $password; |
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} |
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} |
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} |
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/** |
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* This method checks if a username and password combination matches |
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* a user and encrypted password from the htpasswd file. |
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* @param string $user |
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* @param string $password |
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* @return bool |
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*/ |
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public function check($user, $password) { |
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if ( !isset($this->users[$user]) ) { |
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return false; |
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} |
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$checks = [ '{SSHA}' => 'saltedSHA1', '{SHA}' => 'SHA1', '$apr1$' => 'MD5', '$2y$' => 'bcrypt' ]; |
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$crypted = $this->users[$user]; |
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$check = 'crypt'; |
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foreach($checks as $match => $algorithm) { |
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if ( strpos($crypted, $match) === 0 ) { |
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$check = $algorithm; |
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break; |
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} |
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} |
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return $this->$check($crypted, $password); |
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} |
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private function crypt($crypted, $password) { |
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return (crypt( $password, substr($crypted,0,CRYPT_SALT_LENGTH) ) == $crypted); |
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} |
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private function saltedSHA1($crypted, $password) { |
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$hash = base64_decode(substr($crypted, 6)); |
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return (substr($hash, 0, 20) == pack('H*', sha1($password . substr($hash, 20)))); |
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} |
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private function SHA1($crypted, $password) { |
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$non_salted_sha1 = "{SHA}" . base64_encode(pack("H*", sha1($password))); |
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return ($non_salted_sha1 == $crypted); |
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} |
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private function MD5($crypted, $password) { |
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// thanks to http://blog.ethlo.com/2013/02/01/using-php-and-existing-htpasswd-file-for-authentication.html |
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$passParts = explode('$', $crypted); |
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$salt = $passParts[2]; |
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$hashed = self::cryptApr1Md5($password, $salt); |
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return $hashed == $crypted; |
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} |
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private function bcrypt($crypted, $password) { |
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return password_verify($password, $crypted); |
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} |
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private function cryptApr1Md5($plainpasswd, $salt) { |
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$len = strlen($plainpasswd); |
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$text = $plainpasswd.'$apr1$'.$salt; |
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$bin = pack("H32", md5($plainpasswd.$salt.$plainpasswd)); |
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for ($i = $len; $i > 0; $i -= 16) { |
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$text .= substr($bin, 0, min(16, $i)); |
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} |
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for ($i = $len; $i > 0; $i >>= 1) { |
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$text .= ($i & 1) ? chr(0) : $plainpasswd[0]; |
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} |
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$bin = pack("H32", md5($text)); |
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for ($i = 0; $i < 1000; $i++) { |
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$new = ($i & 1) ? $plainpasswd : $bin; |
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if ($i % 3) { |
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$new .= $salt; |
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} |
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if ($i % 7) { |
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$new .= $plainpasswd; |
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} |
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$new .= ($i & 1) ? $bin : $plainpasswd; |
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$bin = pack("H32", md5($new)); |
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} |
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$tmp = ''; |
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for ($i = 0; $i < 5; $i++) { |
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$k = $i + 6; |
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$j = $i + 12; |
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if ($j == 16) { |
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$j = 5; |
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} |
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$tmp = $bin[$i].$bin[$k].$bin[$j].$tmp; |
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} |
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$tmp = chr(0).chr(0).$bin[11].$tmp; |
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$tmp = strtr(strrev(substr(base64_encode($tmp), 2)), |
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", |
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"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"); |
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return "$"."apr1"."$".$salt."$".$tmp; |
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} |
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} |
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Ariadne-CMS /
arc-web
