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<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4: */
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/*
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Copyright (c) 2003, Michael Bretterklieber <michael@bretterklieber.com>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The names of the authors may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This code cannot simply be copied and put under the GNU Public License or
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any other GPL-like (LGPL, GPL2) License.
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$Id: SMBPasswd.php,v 1.4 2005/05/08 09:10:32 mbretter Exp $
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*/
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require_once 'PEAR.php';
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require_once 'Crypt/CHAP.php';
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/**
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* Class to manage SAMBA smbpasswd-style files
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*
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* Example 1 (modifying existing file):
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*
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* $f = new File_SMBPasswd('./smbpasswd');
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* $f->load();
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* $f->addAccount('sepp3', 12, 'MyPw');
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* $f->modAccount('sepp', '', 'MyPw');
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* $f->delAccount('karli');
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* $f->printAccounts();
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* $f->save();
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*
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* Example 2 (creating a new file):
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*
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* $f = new File_SMBPasswd('./smbpasswdnew');
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* $f->addAccount('sepp1', 12, 'MyPw');
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* $f->addAccount('sepp3', 1000, 'MyPw');
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* $f->save();
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*
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* Example 3 (authentication):
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*
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* $f = new File_SMBPasswd('./smbpasswdnew');
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* $f->load();
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* if ($f->verifyAccount('sepp', 'MyPw')) {
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* echo "Account valid";
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* } else {
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* echo "Account invalid or disabled";
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* }
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*
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* @author Michael Bretterklieber <mbretter@jawa.at>
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* @access public
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* @version 0.9.0
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* @package File_SMBPasswd
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* @category File
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*/
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class File_SMBPasswd extends PEAR {
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/**
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* Multidimensional array of accounts
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* @var array
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*/
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var $accounts = array();
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/**
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* Path to the smbpasswd file
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* @var string
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*/
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var $file;
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/**
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* Class who generates the NT-Hash and LAN-Manager-Hash
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* @var object
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*/
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var $cryptEngine;
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/**
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* Filehandle, of locked File
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* @var resource
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*/
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var $fplock;
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/**
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* Constructor
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*
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* @access public
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* @param string $file
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* @return object File_SMBPasswd
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*/
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function File_SMBPasswd($file = 'smbpasswd')
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{
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$this->file = $file;
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$this->cryptEngine = new Crypt_CHAP_MSv1;
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}
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/**
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* Load the given smbpasswd file
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*
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* @access public
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* @return mixed true on success, PEAR_Error on failure
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*/
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function load()
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{
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$fd = fopen($this->getFile(), 'r') ;
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if (!$fd) {
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return $this->raiseError('Could not open ' . $this->getFile() .
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' for reading.');
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}
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while (!feof($fd)) {
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$line = fgets($fd, 4096);
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if (preg_match('/^#|^$/', trim($line))) {
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continue;
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}
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@list($user, $userid, $lmhash, $nthash, $flags, $lct, $comment) = explode(':', $line);
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if (strlen($user)) {
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$this->accounts[$user] = array(
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'userid' => trim($userid),
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'lmhash' => trim($lmhash),
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'nthash' => trim($nthash),
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'flags' => trim($flags),
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'lct' => trim($lct),
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'comment' => trim($comment)
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);
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}
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}
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fclose($fd);
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return true;
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}
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/**
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* Get the value of file property
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*
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* @access public
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* @return string
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*/
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function getFile() {
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return $this->file;
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}
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/**
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* Get the value of accounts property
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*
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* @access public
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* @return array
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*/
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function &getAccounts() {
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return $this->accounts;
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}
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/**
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* Adds an account, with pre-encrypted passwords
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*
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* @param $user new username
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* @param $userid new userid
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* @param $lmhash LAN-Manager-Hash
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* @param $nthash NT-Hash
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* @param $comment Comment
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* @param $flags Account-flags (see man 5 smbpasswd)
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*
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* @return mixed returns PEAR_Error, if the user already exists
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* @access public
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*/
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function addAccountEncrypted($user, $userid, $lmhash = '', $nthash = '', $comment = '', $flags = '[U ]')
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{
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if (empty($lmhash)) $lmhash = str_repeat('X', 32);
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if (empty($nthash)) $nthash = str_repeat('X', 32);
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if (!isset($this->accounts[$user])) {
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$this->accounts[$user] = array(
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'userid' => trim($userid),
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'lmhash' => trim($lmhash),
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'nthash' => trim($nthash),
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'flags' => trim($flags),
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'lct' => sprintf('LCT-%08s', strtoupper(dechex(time()))),
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'comment' => trim($comment)
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);
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return true;
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} else {
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return $this->raiseError( "Couldn't add user '$user', because the user already exists!");
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}
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}
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/**
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* Adds an account
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*
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* @param $user new username
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* @param $userid new userid
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* @param $pass Plaintext password
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* @param $comment Comment
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* @param $flags Account-flags (see man 5 smbpasswd)
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*
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* @return mixed returns PEAR_Error, if the user already exists
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* @access public
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*/
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function addAccount($user, $userid, $pass, $comment = '', $flags = '[U ]')
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{
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if (empty($pass)) {
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return $this->addAccountEncrypted($user, $userid, '', '', $comment, $flags) ;
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} else {
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return $this->addAccountEncrypted(
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$user,
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$userid,
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strtoupper(bin2hex($this->cryptEngine->lmPasswordHash($pass))),
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strtoupper(bin2hex($this->cryptEngine->ntPasswordHash($pass))),
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$comment,
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$flags);
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}
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}
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/**
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* Adds a user-account
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*
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* @param $user new username
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* @param $userid new userid
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* @param $pass Plaintext password
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* @param $comment Comment
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*
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* @return mixed returns PEAR_Error, if the user already exists
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* @access public
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*/
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function addUser($user, $userid, $pass, $comment = '')
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{
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return $this->addAccount($user, $userid, $pass, $comment, '[U ]');
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}
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/**
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* Adds a machine-account
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*
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* @param $machine new username
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* @param $userid new userid
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* @param $comment Comment
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*
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* @return mixed returns PEAR_Error, if the user already exists
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* @access public
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*/
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function addMachine($machine, $userid, $comment = '')
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{
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return $this->addAccount($machine . '$', $userid, $machine, $comment, '[W ]');
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}
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/**
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* Modifies an account with the pre-encrypted Hashes
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*
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* @param $user new username
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* @param $userid new userid
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* @param $lmhash LAN-Manager-Hash
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* @param $nthash NT-Hash
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* @param $comment Comment
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* @param $flags Account-flags (see man 5 smbpasswd)
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*
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* @return mixed returns PEAR_Error, if the user doesen't exists
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* @access public
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*/
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function modAccountEncrypted($user, $userid = '', $lmhash = '', $nthash = '', $comment = '', $flags = '')
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{
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$account = $this->accounts[$user];
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if (is_array($account)) {
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if ($userid === '') $userid = $account['userid'];
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if (empty($lmhash)) $lmhash = $account['lmhash'];
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if (empty($nthash)) $nthash = $account['nthash'];
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if (empty($flags)) $flags = $account['flags'];
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if (empty($comment)) $comment = $account['comment'];
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$this->accounts[$user] = array(
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'userid' => trim($userid),
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'lmhash' => trim($lmhash),
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'nthash' => trim($nthash),
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'flags' => trim($flags),
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'lct' => sprintf('LCT-%08s', strtoupper(dechex(time()))),
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'comment' => trim($comment)
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);
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return true;
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} else {
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return $this->raiseError( "Couldn't modify user '$user', because the user doesn't exists!") ;
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}
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}
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/**
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* Modifies an account with given plaintext password
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*
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* @param $user new username
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* @param $userid new userid
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* @param $pass Plaintext password
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* @param $comment Comment
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* @param $flags Account-flags (see man 5 smbpasswd)
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*
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* @return mixed returns PEAR_Error, if the user doesen't exists
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* @access public
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*/
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function modAccount($user, $userid = '', $pass = '', $comment = '', $flags = '')
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{
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if (empty($pass)) {
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return $this->modAccountEncrypted($user, $userid, '', '', $comment, $flags) ;
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} else {
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return $this->modAccountEncrypted(
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$user,
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$userid,
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strtoupper(bin2hex($this->cryptEngine->lmPasswordHash($pass))),
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strtoupper(bin2hex($this->cryptEngine->ntPasswordHash($pass))),
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$comment,
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$flags);
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}
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}
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/**
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* This is an alias for modAccount
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*
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* @see File_SMBPasswd::modAccount
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*/
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function modUser($user, $userid = '', $pass = '', $comment = '', $flags = '')
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{
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return $this->modAccount($user, $userid, $pass, $comment, $flags);
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}
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/**
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* Deletes an account
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*
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* @param $user username
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*
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* @return mixed returns PEAR_Error, if the user doesn't exists
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* @access public
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*/
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function delAccount($name)
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{
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if (isset($this->accounts[$name])) {
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unset($this->accounts[$name]);
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return true;
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} else {
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return $this->raiseError( "Couldn't delete account '$name', because the account doesn't exists!") ;
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}
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}
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/**
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* This is an alias for delAccount
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*
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* @see File_SMBPasswd::delAccount
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*/
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361 |
function delUser($user)
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362 |
{
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return $this->delAccount($user);
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}
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/**
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* Verifies a user's password
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* Prefer NT-Hash instead of weak LAN-Manager-Hash
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*
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* @param $user username
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* @param $nthash NT-Hash in hex
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373 |
* @param $lmhash LAN-Manager-Hash in hex
|
|
|
374 |
*
|
|
|
375 |
* @return boolean true if password is ok
|
|
|
376 |
* @access public
|
|
|
377 |
*/
|
|
|
378 |
function verifyAccountEncrypted($user, $nthash, $lmhash = '')
|
|
|
379 |
{
|
|
|
380 |
$account = $this->accounts[$user];
|
|
|
381 |
if (is_array($account)) {
|
|
|
382 |
|
|
|
383 |
// checking wether account is disabled
|
|
|
384 |
if (preg_match('/D/', $account['flags'])) {
|
|
|
385 |
return false;
|
|
|
386 |
}
|
|
|
387 |
if (!empty($lmhash)) {
|
|
|
388 |
return $account['lmhash'] == strtoupper($lmhash);
|
|
|
389 |
} else {
|
|
|
390 |
return $account['nthash'] == strtoupper($nthash);
|
|
|
391 |
}
|
|
|
392 |
}
|
|
|
393 |
return false;
|
|
|
394 |
}
|
|
|
395 |
|
|
|
396 |
/**
|
|
|
397 |
* Verifies an account with the given plaintext password
|
|
|
398 |
*
|
|
|
399 |
* @param $user username
|
|
|
400 |
* @param $pass The plaintext password
|
|
|
401 |
*
|
|
|
402 |
* @return boolean true if password is ok
|
|
|
403 |
* @access public
|
|
|
404 |
*/
|
|
|
405 |
function verifyAccount($user, $pass)
|
|
|
406 |
{
|
|
|
407 |
return $this->verifyAccountEncrypted(
|
|
|
408 |
$user,
|
|
|
409 |
strtoupper(bin2hex($this->cryptEngine->ntPasswordHash($pass))),
|
|
|
410 |
strtoupper(bin2hex($this->cryptEngine->lmPasswordHash($pass))));
|
|
|
411 |
}
|
|
|
412 |
|
|
|
413 |
/**
|
|
|
414 |
* Locks the given file
|
|
|
415 |
*
|
|
|
416 |
* @return mixed PEAR_Error, true on succes
|
|
|
417 |
* @access public
|
|
|
418 |
*/
|
|
|
419 |
function lock()
|
|
|
420 |
{
|
|
|
421 |
if (!is_resource($this->fplock)) {
|
|
|
422 |
$this->fplock = @fopen($this->getFile(), 'w');
|
|
|
423 |
}
|
|
|
424 |
|
|
|
425 |
if (!is_resource($this->fplock)) {
|
|
|
426 |
return $this->raiseError('Could not open ' . $this->getFile() .
|
|
|
427 |
' for writing.');
|
|
|
428 |
}
|
|
|
429 |
|
|
|
430 |
if (!flock($this->fplock, LOCK_EX)) {
|
|
|
431 |
return $this->raiseError('Could not open lock file ' . $this->getFile());
|
|
|
432 |
}
|
|
|
433 |
|
|
|
434 |
return true;
|
|
|
435 |
}
|
|
|
436 |
|
|
|
437 |
/**
|
|
|
438 |
* Unlocks the given file
|
|
|
439 |
*
|
|
|
440 |
* @return mixed PEAR_Error, true on succes
|
|
|
441 |
* @access public
|
|
|
442 |
*/
|
|
|
443 |
function unlock()
|
|
|
444 |
{
|
|
|
445 |
if (is_resource($this->fplock)) {
|
|
|
446 |
if (!flock($this->fplock, LOCK_UN)) {
|
|
|
447 |
return $this->raiseError('Could not open unlock file ' . $this->getFile());
|
|
|
448 |
}
|
|
|
449 |
}
|
|
|
450 |
|
|
|
451 |
return true;
|
|
|
452 |
}
|
|
|
453 |
|
|
|
454 |
/**
|
|
|
455 |
* Writes changes to smbpasswd file and locks, unlocks and closes it
|
|
|
456 |
*
|
|
|
457 |
* @param $file Filename
|
|
|
458 |
*
|
|
|
459 |
* @return mixed returns PEAR_Error, if the file is not writeable
|
|
|
460 |
* @access public
|
|
|
461 |
*/
|
|
|
462 |
function save($file = '')
|
|
|
463 |
{
|
|
|
464 |
if (!empty($file)) {
|
|
|
465 |
$this->file = $file;
|
|
|
466 |
}
|
|
|
467 |
|
|
|
468 |
$ret = $this->lock();
|
|
|
469 |
if ($ret !== true) {
|
|
|
470 |
return $ret;
|
|
|
471 |
}
|
|
|
472 |
|
|
|
473 |
foreach ($this->accounts as $user => $userdata) {
|
|
|
474 |
fputs($this->fplock, sprintf("%s:%s:%s:%s:%s:%s:%s\n",
|
|
|
475 |
$user,
|
|
|
476 |
$userdata['userid'],
|
|
|
477 |
$userdata['lmhash'],
|
|
|
478 |
$userdata['nthash'],
|
|
|
479 |
$userdata['flags'],
|
|
|
480 |
$userdata['lct'],
|
|
|
481 |
$userdata['comment']));
|
|
|
482 |
}
|
|
|
483 |
|
|
|
484 |
$this->unlock();
|
|
|
485 |
fclose($this->fplock);
|
|
|
486 |
return true;
|
|
|
487 |
}
|
|
|
488 |
|
|
|
489 |
/**
|
|
|
490 |
* Print all accounts from smbpasswd file
|
|
|
491 |
*
|
|
|
492 |
* @access public
|
|
|
493 |
* @return void
|
|
|
494 |
*/
|
|
|
495 |
function printAccounts() {
|
|
|
496 |
foreach ($this->accounts as $user => $userdata) {
|
|
|
497 |
printf("%s:%s:%s:%s:%s:%s:%s\n",
|
|
|
498 |
$user,
|
|
|
499 |
$userdata['userid'],
|
|
|
500 |
$userdata['lmhash'],
|
|
|
501 |
$userdata['nthash'],
|
|
|
502 |
$userdata['flags'],
|
|
|
503 |
$userdata['lct'],
|
|
|
504 |
$userdata['comment']);
|
|
|
505 |
}
|
|
|
506 |
}
|
|
|
507 |
|
|
|
508 |
}
|
|
|
509 |
?>
|