574 lines
16 KiB
PHP
574 lines
16 KiB
PHP
<?php
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/*
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$Id$
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This code is part of LDAP Account Manager (http://www.sourceforge.net/projects/lam)
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Copyright (C) 2003 - 2006 Tilo Lutz
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* This provides several helper function for the account modules.
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*
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* @author Tilo Lutz
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* @author Roland Gruber
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*
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* @package lib
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*/
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/** Needed to calculate Samba passwords */
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include_once("createntlm.inc");
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/**
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* Returns a list of shells listed in config/shells.
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*
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* @return array list of shell names
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*/
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function getshells() {
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// Load shells from file
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if (file_exists($_SESSION['lampath'] . 'config/shells')) {
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$shells = file($_SESSION['lampath'] . 'config/shells');
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$i = 0;
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while (count($shells) > $i) {
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// remove whitespaces
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trim($shells[$i]);
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// remove lineend
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$shells[$i] = substr($shells[$i], 0, strpos($shells[$i], "\n"));
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// remove comments
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if ($shells[$i]{0}=='#') unset ($shells[$i]);
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else $i++;
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}
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// $shells is array with all valid shells
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return $shells;
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}
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else return array();
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}
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/**
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* This function will return all values from $array without values of $values.
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*
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* @param array $values list of values which should be removed
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* @param array $array list of original values
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* @return array list of remaining values
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*/
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function array_delete($values, $array) {
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// Loop for every entry and check if it should be removed
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if (is_array($array)) {
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$return = array();
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foreach ($array as $array_value)
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if (!@in_array($array_value, $values))
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$return[] = $array_value;
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return $return;
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}
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else return array();
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}
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/**
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* This function will return a password with max. 8 characters.
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*
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* @return string password
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*/
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function genpasswd() {
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// Allowed Characters to generate passwords
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// I'Ve removed characters like l and 1 because they are too similar
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$LCase = 'abcdefghjkmnpqrstuvwxyz';
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$UCase = 'ABCDEFGHJKMNPQRSTUVWXYZ';
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$Integer = '23456789';
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// DEFINE CONSTANTS FOR ALGORTTHM
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define("LEN", '1');
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$a = RndInt('letter');
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$b = RndInt('letter');
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$c = RndInt('letter');
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$d = RndInt('letter');
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$e = RndInt('number');
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$f = RndInt('number');
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$g = RndInt('letter');
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$h = RndInt('letter');
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// EXTRACT 8 CHARACTERS RANDOMLY FROM TH // E DEFINITION STRINGS
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$L1 = substr($LCase, $a, LEN);
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$L2 = substr($LCase, $b, LEN);
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$L3 = substr($LCase, $h, LEN);
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$U1 = substr($UCase, $c, LEN);
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$U2 = substr($UCase, $d, LEN);
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$U3 = substr($UCase, $g, LEN);
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$I1 = substr($Integer, $e, LEN);
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$I2 = substr($Integer, $f, LEN);
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// COMBINE THE CHARACTERS AND DISPLAY TH // E NEW PASSWORD
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$PW = $L1 . $U2 . $I1 . $L2 . $I2 . $U1 . $U3 . $L3;
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return $PW;
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}
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/**
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* THIS FUNCTION GENERATES A RANDOM NUMBER THAT WILL BE USED TO
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* RANDOMLY SELECT CHARACTERS.
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*
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* @param string $Format "letter" or "number"
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* @return integer random number
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*/
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function RndInt($Format){
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switch ($Format){
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case 'letter':
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$Rnd = rand(0,23);
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if ($Rnd > 23){
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$Rnd = $Rnd - 1;
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}
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break;
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case 'number':
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$Rnd = rand(2,9);
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if ($Rnd > 8){
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$Rnd = $Rnd - 1;
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}
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break;
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}
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return $Rnd;
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}
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/**
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* This function will return the days from 1.1.1970 until now.
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*
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* @return number of days
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*/
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function getdays() {
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$days = time() / 86400;
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settype($days, 'integer');
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return $days;
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}
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/**
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* Takes a list of Samba flags and creates the corresponding flag string.
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*
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* @param array $input is an array of Samba flags (e.g. X or D)
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* @return string Samba flag string
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*/
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function smbflag($input) {
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// Start character
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$flag = "[";
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// Add Options
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if ($input['W']) $flag .= "W"; else $flag .= "U";
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if ($input['D']) $flag .= "D";
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if ($input['X']) $flag .= "X";
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if ($input['N']) $flag .= "N";
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if ($input['S']) $flag .= "S";
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if ($input['H']) $flag .= "H";
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// Expand string to fixed length
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$flag = str_pad($flag, 12);
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// End character
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$flag = $flag. "]";
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return $flag;
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}
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/**
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* Generates the LM hash of a password.
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*
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* @param string password original password
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* @return string password hash
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*/
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function lmPassword($password) {
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$hash = new smbHash();
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return $hash->lmhash($password);
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}
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/**
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* Generates the NT hash of a password.
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*
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* @param string password original password
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* @return string password hash
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*/
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function ntPassword($password) {
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$hash = new smbHash();
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return $hash->nthash($password);
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}
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/**
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* Returns the hash value of a plain text password
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* the hash algorithm depends on the configuration file
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*
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* @param string $password the password string
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* @param boolean $enabled marks the hash as enabled/disabled (e.g. by prefixing "!")
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* @param string $hashType password hash type (CRYPT, SHA, SSHA, MD5, SMD5, PLAIN)
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* @return string the password hash
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*/
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function pwd_hash($password, $enabled = true, $hashType = 'SSHA') {
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// check for empty password
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if (! $password || ($password == "")) {
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return "";
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}
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// calculate new random number
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$_SESSION['ldap']->new_rand();
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$hash = "";
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switch ($hashType) {
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case 'CRYPT':
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$hash = "{CRYPT}" . crypt($password);
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break;
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case 'MD5':
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$hash = "{MD5}" . base64_encode(hex2bin(md5($password)));
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break;
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case 'SMD5':
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$salt0 = substr(pack("h*", md5($_SESSION['ldap']->rand)), 0, 8);
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$salt = substr(pack("H*", md5($salt0 . $password)), 0, 4);
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$hash = "{SMD5}" . base64_encode(hex2bin(md5($password . $salt)) . $salt);
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break;
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case 'SHA':
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// PHP 4.3+ can use sha1() function
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if (function_exists('sha1')) {
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$hash = "{SHA}" . base64_encode(hex2bin(sha1($password)));
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}
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// otherwise use MHash
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elseif (function_exists('mHash')) {
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$hash = "{SHA}" . base64_encode(mHash(MHASH_SHA1, $password));
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}
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// if SHA1 is not possible use crypt()
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else {
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$hash = "{CRYPT}" . crypt($password);
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}
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break;
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case 'SSHA':
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// PHP 4.3+ can use sha1() function
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if (function_exists('sha1')) {
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$salt0 = substr(pack("h*", md5($_SESSION['ldap']->rand)), 0, 8);
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$salt = substr(pack("H*", sha1($salt0 . $password)), 0, 4);
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$hash = "{SSHA}" . base64_encode(hex2bin(sha1($password . $salt)) . $salt);
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}
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// otherwise use MHash
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elseif (function_exists('mHash')) {
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$salt = mhash_keygen_s2k(MHASH_SHA1, $password, substr(pack("h*", md5($_SESSION['ldap']->rand)), 0, 8), 4);
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$hash = base64_encode(mHash(MHASH_SHA1, $password . $salt) . $salt);
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$hash = "{SSHA}" . $hash;
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}
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// if SSHA is not possible use crypt()
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else {
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$hash = "{CRYPT}" . crypt($password);
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}
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break;
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case 'PLAIN':
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$hash = $password;
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break;
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// use SSHA if the setting is invalid
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default:
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// PHP 4.3+ can use sha1() function
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if (function_exists('sha1')) {
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$salt0 = substr(pack("h*", md5($_SESSION['ldap']->rand)), 0, 8);
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$salt = substr(pack("H*", sha1($salt0 . $password)), 0, 4);
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$hash = "{SSHA}" . base64_encode(hex2bin(sha1($password . $salt)) . $salt);
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}
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// otherwise use MHash
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elseif (function_exists('mHash')) {
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$salt = mhash_keygen_s2k(MHASH_SHA1, $password, substr(pack("h*", md5($_SESSION['ldap']->rand)), 0, 8), 4);
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$hash = base64_encode(mHash(MHASH_SHA1, $password . $salt) . $salt);
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$hash = "{SSHA}" . $hash;
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}
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// if SSHA is not possible use crypt()
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else {
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$hash = "{CRYPT}" . crypt($password);
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}
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break;
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}
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// enable/disable password
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if (! $enabled) return pwd_disable($hash);
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else return $hash;
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}
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/**
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* Marks an password hash as enabled and returns the new hash string
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*
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* @param string $hash hash value to enable
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* @return string enabled password hash
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*/
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function pwd_enable($hash) {
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// check if password is disabled (old wrong LAM method)
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if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) {
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return substr($hash, 1, strlen($hash));
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}
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// check for "!" or "*" at beginning of password hash
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else {
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if (substr($hash, 0, 1) == "{") {
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$pos = strpos($hash, "}");
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if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) {
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// enable hash
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return substr($hash, 0, $pos + 1) . substr($hash, $pos + 2, strlen($hash));
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}
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else return $hash; // not disabled
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}
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else return $hash; // password is plain text
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}
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}
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/**
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* Marks an password hash as disabled and returns the new hash string
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*
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* @param string $hash hash value to disable
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* @return string disabled hash value
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*/
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function pwd_disable($hash) {
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// check if password is disabled (old wrong LAM method)
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if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) {
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return $hash;
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}
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// check for "!" or "*" at beginning of password hash
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else {
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if (substr($hash, 0, 1) == "{") {
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$pos = strpos($hash, "}");
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if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) {
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// hash already disabled
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return $hash;
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}
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else return substr($hash, 0, $pos + 1) . "!" . substr($hash, $pos + 1, strlen($hash)); // not disabled
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}
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else return $hash; // password is plain text
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}
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}
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/**
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* Checks if a password hash is enabled/disabled
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*
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* @param string $hash password hash to check
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* @return boolean true if the password is marked as enabled
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*/
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function pwd_is_enabled($hash) {
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// disabled passwords have a "!" or "*" at the beginning (old wrong LAM method)
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if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) return false;
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if (substr($hash, 0, 1) == "{") {
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$pos = strrpos($hash, "}");
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// check if hash starts with "!" or "*"
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if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) return false;
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else return true;
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}
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else return true;
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}
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/**
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* Returns an array with all Samba 3 domain entries under the given suffix
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*
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* @return array list of samba3domain objects
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*/
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function search_domains() {
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$suffix = $_SESSION['config']->get_Suffix('smbDomain');
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$ret = array();
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$attr = array("DN", "sambaDomainName", "sambaSID", "sambaNextRid", "sambaNextGroupRid",
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"sambaNextUserRid", "sambaAlgorithmicRidBase");
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$sr = @ldap_search($_SESSION['ldap']->server(), $suffix, "objectClass=sambaDomain", $attr);
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if ($sr) {
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$units = ldap_get_entries($_SESSION['ldap']->server, $sr);
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// delete count entry
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unset($units['count']);
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// extract attributes
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for ($i = 0; $i < sizeof($units); $i++) {
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$ret[$i] = new samba3domain();
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$ret[$i]->dn = $units[$i]['dn'];
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$ret[$i]->name = $units[$i]['sambadomainname'][0];
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$ret[$i]->SID = $units[$i]['sambasid'][0];
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if (isset($units[$i]['sambanextrid'][0])) $ret[$i]->nextRID = $units[$i]['sambanextrid'][0];
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if (isset($units[$i]['sambanextgrouprid'][0])) $ret[$i]->nextGroupRID = $units[$i]['sambanextgrouprid'][0];
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if (isset($units[$i]['sambanextuserrid'][0])) $ret[$i]->nextUserRID = $units[$i]['sambanextuserrid'][0];
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if (isset($units[$i]['sambaalgorithmicridbase'][0])) $ret[$i]->RIDbase = $units[$i]['sambaalgorithmicridbase'][0];
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}
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// sort array by domain name
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usort($ret, "cmp_domain");
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}
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return $ret;
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}
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/**
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* Helper function to sort the domains
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*
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* @param string $a first argument to compare
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* @param string $b second argument to compare
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* @return integer 0 if equal, 1 if $a is greater, -1 if $b is greater
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*/
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function cmp_domain($a, $b) {
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if ($a->name == $b->name) return 0;
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elseif ($a->name == max($a->name, $b->name)) return 1;
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else return -1;
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}
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/**
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* Represents a Samba 3 domain entry
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*
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* @package modules
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*/
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class samba3domain {
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/** DN */
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var $dn;
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/** Domain name */
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var $name;
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/** Domain SID */
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var $SID;
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/** Next RID */
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var $nextRID;
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/** Next user RID */
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var $nextUserRID;
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/** Next group RID */
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var $nextGroupRID;
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/** RID base to calculate RIDs, default 1000 */
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var $RIDbase = 1000;
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}
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/**
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* Checks if a given value matches the selected regular expression.
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*
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* @param string $argument value to check
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* @param string $regexp pattern name
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* @return boolean true if matches, otherwise false
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*/
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function get_preg($argument, $regexp) {
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/* Bug in php preg_match doesn't work correct with utf8
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*/
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$language = explode(":", $_SESSION['language']);
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$language2 = explode ('.', $language[0]);
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setlocale(LC_ALL, $language2[0]);
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// First we check "positive" cases
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$pregexpr = '';
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switch ($regexp) {
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case 'password':
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$pregexpr = '/^([[:alnum:]\\^\\ \\|\\#\\*\\,\\.\\;\\:\\_\\+\\!\\%\\&\\/\\?\\{\\(\\)\\}\\[\\]=-])*$/u';
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break;
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case 'groupname': // first character must be a letter. All letters, numbers, space and ._- are allowed characters
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case 'username': // first character must be a letter. All letters, numbers, space and ._- are allowed characters
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$pregexpr = '/^[[:alpha:]]([[:alnum:]\\.\\ \\_-])*$/u';
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break;
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case 'usernameList': // comma separated list of user names
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case 'groupnameList': // comma separated list of group names
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$pregexpr = '/^[[:alpha:]]([[:alnum:]\\.\\ \\_-])*(,[[:alpha:]]([[:alnum:]\\.\\ \\_-])*)*$/u';
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break;
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case 'hostname': // first character must be letter, last must be $. Only normal letters, numbers and ._- are allowed
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$pregexpr = '/^[a-zA-Z]([a-zA-Z0-9\\.\\_-])*\\$$/u';
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break;
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case 'realname': // Allow all but \, <, >, =, $, ?
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case 'cn':
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$pregexpr = '/^[^\\\<>=\\$\\?]+(\\$)?$/';
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break;
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case "telephone": // Allow numbers, space, brackets, /-+.
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$pregexpr = '/^(\\+)*([0-9\\.\\ \\(\\)\\/-])*$/';
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break;
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case "email":
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$pregexpr = '/^([0-9a-zA-Z\\._-])+[@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*$/';
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break;
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case "mailLocalAddress":
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$pregexpr = '/^([0-9a-zA-Z\\._-])+([@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*)?$/';
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break;
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case "postalAddress": // Allow all but \, <, >, =, $, ?
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case "postalCode":
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case "street":
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case "title":
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case "employeeType":
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$pregexpr = '/^[^\\\<>=\\$\\?]*$/';
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break;
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case "homeDirectory": // Homapath, /path/......
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$pregexpr = '/^([\/]([[:alnum:]\\$\\.\\ \\_-])+)+$/u';
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break;
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case "digit": // Normal number
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$pregexpr = '/^[[:digit:]]*$/';
|
|
break;
|
|
case "UNC": // UNC Path, e.g. \\server\share\folder\...
|
|
$pregexpr = '/^((([\\\][\\\])|(%))([a-zA-Z0-9%\\.-])+)([\\\]([[:alnum:]%\\.\\$\\ \\_-])+)+$/u';
|
|
break;
|
|
case "logonscript": // path to login-script. normal unix file
|
|
$pregexpr = '/^(([\/])*([[:alnum:]%\\.\\ \\$\\_-])+([\/]([[:alnum:]%\\.\\ \\$\\_-])+)*((\\.bat)|(\\.cmd)|(\\.exe)))*$/u';
|
|
break;
|
|
case "workstations": // comma separated list with windows-hosts
|
|
$pregexpr = '/^(([a-zA-Z0-9\\.\\_-])+(,[a-zA-Z0-9\\.\\_-])*)*$/';
|
|
break;
|
|
case "domainname": // Windows Domainname
|
|
$pregexpr = '/^([A-Za-z0-9\\.\\_-])+$/';
|
|
break;
|
|
case "unixhost": // Unix hosts
|
|
$pregexpr = '/^([a-z0-9,\\.\\_-])*$/';
|
|
break;
|
|
case 'digit2': // Same as digit but also -1
|
|
$pregexpr = '/^(([-][1])|([[:digit:]]*))$/';
|
|
break;
|
|
case 'gecos':
|
|
$pregexpr = '/^[a-zA-z0-9 \\._-]+([,][a-zA-z0-9 \\._-]+)*$/';
|
|
break;
|
|
case 'macAddress':
|
|
$pregexpr = '/^[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){5}$/';
|
|
break;
|
|
case 'date':
|
|
$pregexpr = '/^((0?[1-9])|([1-2][0-9])|30|31)\\-((0?[1-9])|(1[0-2]))\\-[1-3][0-9][0-9][0-9]$/';
|
|
break;
|
|
case 'sambaLogonHours':
|
|
$pregexpr = '/^[0-9a-fA-F]{42}$/';
|
|
break;
|
|
case 'DNSname':
|
|
$pregexpr = '/^[0-9a-zA-Z_-]+(\\.[0-9a-zA-Z_-]+)*$/';
|
|
break;
|
|
case 'nis_alias':
|
|
$pregexpr = '/^([[:alnum:]])+$/u';
|
|
break;
|
|
case 'nis_recipient':
|
|
$pregexpr = '/^([[:alnum:]@\\.\\ \\_-])+$/u';
|
|
break;
|
|
case 'country': // Allow all letters and space
|
|
$pregexpr = '/^[[:alpha:]]([[:alpha:] ])+$/u';
|
|
break;
|
|
case 'dn': // LDAP DN
|
|
$pregexpr = '/^([^=,]+=[^=,]+)(,([^=,]+=[^=,]+))*$/';
|
|
break;
|
|
case 'domainSID': // Samba domain SID
|
|
$pregexpr = "/^S\\-[0-9]\\-[0-9]\\-[0-9]{2,2}\\-[0-9]+\\-[0-9]+\\-[0-9]+$/";
|
|
}
|
|
if ($pregexpr!='')
|
|
if (preg_match($pregexpr, $argument)) {
|
|
/* Bug in php preg_match doesn't work correct with utf8
|
|
*/
|
|
setlocale(LC_ALL, $language[0]);
|
|
return true;
|
|
}
|
|
// Now we check "negative" cases, characters which are not allowed
|
|
$pregexpr = '';
|
|
switch ($regexp) {
|
|
case "!lower":
|
|
$pregexpr = '/[[:lower:]]/';
|
|
break;
|
|
case "!upper":
|
|
$pregexpr = '/[[:upper:]]/';
|
|
break;
|
|
case "!digit":
|
|
$pregexpr = '/[[:digit:]]/';
|
|
break;
|
|
}
|
|
if ($pregexpr!='')
|
|
if (!preg_match($pregexpr, $argument)) {
|
|
/* Bug in php preg_match doesn't work correct with utf8
|
|
*/
|
|
setlocale(LC_ALL, $language[0]);
|
|
return true;
|
|
}
|
|
/* Bug in php preg_match doesn't work correct with utf8
|
|
*/
|
|
setlocale(LC_ALL, $language[0]);
|
|
return false;
|
|
}
|
|
|
|
|
|
?>
|