<?php
class PasswdAuth {
var $auth;
var $htPasswdPath = 'D:\sites\websapp.localhost';
// Where to go when authorized
// If is is not set then PHP_SELF is used as a default
var $authorizedUrl;
// Where to go when not authorized
var $notAuthorizedUrl;
// The deliminator used in the passwd file
var $deliminator = ':';
function PasswdAuth($authorizedUrl = '', $notAuthorizedUrl = '') {
global $PHP_SELF;
$authorizedUrl == '' ? $this->authorizedUrl = $PHP_SELF : $this->authorizedUrl = $authorizedUrl;
$this->notAuthorizedUrl = $notAuthorizedUrl;
}
function check($user = '') {
global $PHP_AUTH_USER, $PHP_AUTH_PW;
$this->auth = false;
if (isset($PHP_AUTH_USER) && isset($PHP_AUTH_PW)) {
$lines = &$this->_getUsersArray();
foreach($lines as $line) {
list($username, $password) = explode($this->deliminator, $line);
if(($user != '') && ($username != $user)) {
continue;
}
if ($username == $PHP_AUTH_USER) {
$salt = substr($password ,0 ,2);
$cryptPasswd = crypt($PHP_AUTH_PW, $salt);
if($password == $cryptPasswd) {
$this->auth = true;
break;
}
}
}
}
if(!$this->auth) {
if($this->notAuthorizedUrl == '') {
header('WWW-Authenticate: Basic realm="Private"');
header('HTTP/1.0 401 Unauthorized');
echo 'Authorization Required';
exit;
} else {
header($this->notAuthorizedUrl);
}
} else {
header($this->authorizedUrl);
}
}
/*
Returns true if the given user is found in the passwd file. False otherwise.
*/
function checkUser($user) {
$lines = &$this->_getUsersArray();
foreach($lines as $line) {
if($this->_retrieveUsername($line) == $user) {
return true;
}
}
return false;
}
/*
Removes the given user from the passwd file. If the user was removed succesfully,
true is returned, false otherwise (e.g.: if the user was not in the file, false
is returned.
*/
function deleteUser($user) {
$lines = &$this->_getUsersArray();
$usersArr = array();
$result = false;
foreach($lines as $line) {
if($this->_retrieveUsername($line) != $user) {
$usersArr[] = $line;
} else {
$result = true;
}
}
$this->_saveUsersArray($usersArr);
return $result;
}
/*
Adds the given user to the passwd file. If the user was added succesfully,
true is returned, false otherwise (e.g.: if the user was already in the file, false
is returned.
*/
function addUser($user, $password) {
if(!$this->checkUser($user)) {
$usersArr = &$this->_getUsersArray();
$usersArr[] = $user.$this->deliminator.crypt($password);
$this->_saveUsersArray($usersArr);
return true;
}
return false;
}
/*
Changes the password of the given user. If the password was changes succesfully,
true is returned, false otherwise (e.g.: if the user was not in the file, false
is returned.
*/
function changePassword($user, $newPassword) {
$lines = &$this->_getUsersArray();
$usersArr = array();
$changed = false;
foreach($lines as $line) {
if($this->_retrieveUsername($line) != $user) {
$usersArr[] = $line;
} else {
$usersArr[] = $user.$this->deliminator.crypt($newPassword);
$changed = true;
}
}
if($changed) {
$this->_saveUsersArray($usersArr);
}
return $changed;
}
function getUsers() {
$lines = &$this->_getUsersArray();
$users = array();
foreach($lines as $line) {
$users[] = $this->_retrieveUsername($line);
}
return $users;
}
/*
PRIVATE FUNCTIONS
*/
function _getUsersArray() {
$filename = $this->htPasswdPath.'/.htpasswd';
$fp = fopen($filename, 'r');
$file_contents = fread($fp, filesize($filename));
fclose($fp);
//var_dump(trim($file_contents));
return explode ("\n", trim($file_contents));
}
function _saveUsersArray(&$arr) {
$file_contents = implode("\n", $arr);
$filename = $this->htPasswdPath.'/.htpasswd';
$fp = fopen($filename, 'w');
fwrite ($fp, trim($file_contents));
fclose($fp);
}
function _retrieveUsername($line) {
return substr($line, 0, strrpos($line, $this->deliminator));
}
function _retrievePassword($line) {
return substr($line, strrpos($line, $this->deliminator) + 1);
}
}
?>
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