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<?php
/* vim: set ts=4 sw=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Author: Rasmus Lerdorf <rasmus@php.net> |
// +----------------------------------------------------------------------+
//
// $Id: File_Passwd.php,v 1.9 2004/06/03 18:06:29 rurban Exp $
//
// Manipulate standard UNIX passwd,.htpasswd and CVS pserver passwd files
require_once 'PEAR.php' ;
/**
* Class to manage passwd-style files
*
* @author Rasmus Lerdorf <rasmus@php.net>
*/
class File_Passwd {
/**
* Passwd file
* @var string
*/
var $filename ;
/**
* Hash list of users
* @var array
*/
var $users ;
/**
* hash list of csv-users
* @var array
*/
var $cvs ;
/**
* filehandle for lockfile
* @var int
*/
var $fplock ;
/**
* locking state
* @var boolean
*/
var $locked ;
/**
* name of the lockfile
* @var string
*/
var $lockfile = './passwd.lock';
/**
* Constructor
* Requires the name of the passwd file. This functions opens the file and read it.
* Changes to this file will written first in the lock file, so it is still possible
* to access the passwd file by another programs. The lock parameter controls the locking
* oft the lockfile, not of the passwd file! ( Swapping $lock and $lockfile would
* breaks bc to v1.3 and smaller).
* Don't forget to call close() to save changes!
*
* @param $file name of the passwd file
* @param $lock if 'true' $lockfile will be locked
* @param $lockfile name of the temp file, where changes are saved
*
* @access public
* @see close()
*/
function File_Passwd($file, $lock = 0, $lockfile = "") {
$this->filename = $file;
if( !empty( $lockfile) ) {
$this->lockfile = $lockfile;
}
if ($lock) {
//check if already locked, on some error or race condition or other user.
//FIXME: implement timeout as with dba
if (!empty($this->lockfile) and file_exists($this->lockfile)) {
if (isset($GLOBALS['HTTP_GET_VARS']['force_unlock'])) {
$this->fplock = fopen($this->lockfile, 'w');
flock($this->fplock, LOCK_UN);
fclose($this->fplock);
} else {
trigger_error('File_Passwd lock conflict: Try &force_unlock=1',E_USER_NOTICE);
}
}
$this->fplock = fopen($this->lockfile, 'w');
flock($this->fplock, LOCK_EX);
$this->locked = true;
}
$fp = fopen($file,'r') ;
if( !$fp ) {
return new PEAR_Error( "Couldn't open '$file'!", 1, PEAR_ERROR_RETURN) ;
}
while(!feof($fp)) {
$line = fgets($fp, 128);
$array = explode(':', $line);
if (count($array) and strlen(trim($array[0]))) {
$user = trim($array[0]);
if (in_array(substr($user,0,1),array('#',';'))) continue;
if (empty($array[1])) $array[1]='';
$this->users[$user] = trim($array[1]);
if (count($array) >= 3)
$this->cvs[$user] = trim($array[2]);
}
}
fclose($fp);
}
/**
* Adds a user
*
* @param $user new user id
* @param $pass password for new user
* @param $cvs cvs user id (needed for pserver passwd files)
*
* @return mixed returns PEAR_Error, if the user already exists
* @access public
*/
function addUser($user, $pass, $cvsuser = "") {
if(!isset($this->users[$user]) && $this->locked) {
$this->users[$user] = crypt($pass);
$this->cvs[$user] = $cvsuser;
return true;
} else {
return new PEAR_Error( "Couldn't add user '$user', because the user already exists!", 2, PEAR_ERROR_RETURN);
}
} // end func addUser()
/**
* Modifies a user
*
* @param $user user id
* @param $pass new password for user
* @param $cvs cvs user id (needed for pserver passwd files)
*
* @return mixed returns PEAR_Error, if the user doesn't exists
* @access public
*/
function modUser($user, $pass, $cvsuser="") {
if(isset($this->users[$user]) && $this->locked) {
$this->users[$user] = crypt($pass);
$this->cvs[$user] = $cvsuser;
return true;
} else {
return new PEAR_Error( "Couldn't modify user '$user', because the user doesn't exists!", 3, PEAR_ERROR_RETURN) ;
}
} // end func modUser()
/**
* Deletes a user
*
* @param $user user id
*
* @return mixed returns PEAR_Error, if the user doesn't exists
* @access public
*/
function delUser($user) {
if (isset($this->users[$user]) && $this->locked) {
unset($this->users[$user]);
unset($this->cvs[$user]);
} else {
return new PEAR_Error( "Couldn't delete user '$user', because the user doesn't exists!", 3, PEAR_ERROR_RETURN) ;
}
} // end func delUser()
/**
* Verifies a user's password
*
* @param $user user id
* @param $pass password for user
*
* @return boolean true if password is ok
* @access public
*/
function verifyPassword($user, $pass) {
//if ($this->users[$user] == crypt($pass, substr($this->users[$user], 0, 2)))
// return true;
if (isset($this->users[$user])) {
$stored_password = $this->users[$user];
if (function_exists('crypt')) {
if (crypt($pass, $stored_password) == $stored_password)
return true; // matches encrypted password
else
return false;
} else {
if ($pass == $stored_password)
return true; // matches plaintext password
else {
trigger_error(_("The crypt function is not available in this version of PHP."),
E_USER_WARNING);
return false;
}
}
}
return false;
}
/**
* Return all users from passwd file
*
* @access public
* @return array
*/
function listUsers() {
return $this->users;
} // end func listUsers()
/**
* Writes changes to passwd file and unlocks it
*
* @access public
*/
function close() {
if ($this->locked) {
foreach($this->users as $user => $pass) {
if (isset($this->cvs[$user])) {
fputs($this->fplock, "$user:$pass:" . $this->cvs[$user] . "\n");
} else {
fputs($this->fplock, "$user:$pass\n");
}
}
@unlink($this->filename.'.bak');
if (isWindows()) {
// windows doesn't allow renaming of open files
flock($this->fplock, LOCK_UN);
$this->locked = false;
fclose($this->fplock);
rename($this->filename,$this->filename.'.bak');
rename($this->lockfile, $this->filename);
} else {
rename($this->filename,$this->filename.'.bak');
rename($this->lockfile, $this->filename);
flock($this->fplock, LOCK_UN);
$this->locked = false;
fclose($this->fplock);
}
if (file_exists($this->filename))
@unlink($this->filename.'.bak');
else {
rename($this->filename.'.bak',$this->filename);
}
}
} // end func close()
}
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End:
?>
|
