LDAPAccountManager/lam/lib/account.inc

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<?php
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/*
$Id$
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This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
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Copyright (C) 2003 - 2006 Tilo Lutz
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2009 - 2010 Roland Gruber
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This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* This provides several helper function for the account modules.
*
* @author Tilo Lutz
* @author Roland Gruber
*
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* @package lib
*/
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/**
* Returns a list of shells listed in config/shells.
*
* @return array list of shell names
*/
function getshells() {
$return = array();
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$shellPath = dirname(__FILE__) . '/../config/shells';
// load shells from file
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if (file_exists($shellPath)) {
$shells = file($shellPath);
for ($i = 0; $i < sizeof($shells); $i++) {
// remove whitespaces and line end
$shells[$i] = trim($shells[$i]);
// remove comments
if ((strlen($shells[$i]) == 0) || $shells[$i]{0}=='#') {
continue;
}
$return[] = $shells[$i];
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}
return $return;
}
return $return;
}
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/**
* This function will return all values from $array without values of $values.
*
* @param array $values list of values which should be removed
* @param array $array list of original values
* @return array list of remaining values
*/
function array_delete($values, $array) {
// Loop for every entry and check if it should be removed
if (is_array($array)) {
$return = array();
foreach ($array as $array_value)
if (!@in_array($array_value, $values))
$return[] = $array_value;
return $return;
}
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else return array();
}
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/**
* Checks if a string exists in an array, ignoring case.
*/
function in_array_ignore_case($needle, $haystack) {
if( ! is_array( $haystack ) )
return false;
if( ! is_string( $needle ) )
return false;
foreach( $haystack as $element )
if( is_string( $element ) && 0 == strcasecmp( $needle, $element ) )
return true;
return false;
}
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/**
* This function will return the days from 1.1.1970 until now.
*
* @return number of days
*/
function getdays() {
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$days = time() / 86400;
settype($days, 'integer');
return $days;
}
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/**
* Takes a list of Samba flags and creates the corresponding flag string.
*
* @param array $input is an array of Samba flags (e.g. X or D)
* @return string Samba flag string
*/
function smbflag($input) {
// Start character
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$flag = "[";
// Add Options
if ($input['W']) $flag .= "W"; else $flag .= "U";
if ($input['D']) $flag .= "D";
if ($input['X']) $flag .= "X";
if ($input['N']) $flag .= "N";
if ($input['S']) $flag .= "S";
if ($input['H']) $flag .= "H";
// Expand string to fixed length
$flag = str_pad($flag, 12);
// End character
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$flag = $flag. "]";
return $flag;
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}
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/**
* Generates the LM hash of a password.
*
* @param string password original password
* @return string password hash
*/
function lmPassword($password) {
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// Needed to calculate Samba passwords
include_once("createntlm.inc");
// get hash
$hash = new smbHash();
return $hash->lmhash($password);
}
/**
* Generates the NT hash of a password.
*
* @param string password original password
* @return string password hash
*/
function ntPassword($password) {
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// Needed to calculate Samba passwords
include_once("createntlm.inc");
// get hash
$hash = new smbHash();
return $hash->nthash($password);
}
/**
* Returns the hash value of a plain text password
* the hash algorithm depends on the configuration file
*
* @param string $password the password string
* @param boolean $enabled marks the hash as enabled/disabled (e.g. by prefixing "!")
* @param string $hashType password hash type (CRYPT, SHA, SSHA, MD5, SMD5, PLAIN)
* @return string the password hash
*/
function pwd_hash($password, $enabled = true, $hashType = 'SSHA') {
// check for empty password
if (! $password || ($password == "")) {
return "";
}
// calculate new random number
if (isset($_SESSION['ldap'])) {
$rand = $_SESSION['ldap']->new_rand();
}
else {
mt_srand((microtime() * 1000000));
$rand = mt_rand();
}
$hash = "";
switch ($hashType) {
case 'CRYPT':
$hash = "{CRYPT}" . crypt($password);
break;
case 'MD5':
$hash = "{MD5}" . base64_encode(hex2bin(md5($password)));
break;
case 'SMD5':
$salt0 = substr(pack("h*", md5($rand)), 0, 8);
$salt = substr(pack("H*", md5($salt0 . $password)), 0, 4);
$hash = "{SMD5}" . base64_encode(hex2bin(md5($password . $salt)) . $salt);
break;
case 'SHA':
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$hash = "{SHA}" . base64_encode(hex2bin(sha1($password)));
break;
case 'PLAIN':
$hash = $password;
break;
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case 'SSHA':
default: // use SSHA if the setting is invalid
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$salt0 = substr(pack("h*", md5($rand)), 0, 8);
$salt = substr(pack("H*", sha1($salt0 . $password)), 0, 4);
$hash = "{SSHA}" . base64_encode(hex2bin(sha1($password . $salt)) . $salt);
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break;
}
// enable/disable password
if (! $enabled) return pwd_disable($hash);
else return $hash;
}
/**
* Marks an password hash as enabled and returns the new hash string
*
* @param string $hash hash value to enable
* @return string enabled password hash
*/
function pwd_enable($hash) {
// check if password is disabled (old wrong LAM method)
if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) {
return substr($hash, 1, strlen($hash));
}
// check for "!" or "*" at beginning of password hash
else {
if (substr($hash, 0, 1) == "{") {
$pos = strpos($hash, "}");
if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) {
// enable hash
return substr($hash, 0, $pos + 1) . substr($hash, $pos + 2, strlen($hash));
}
else return $hash; // not disabled
}
else return $hash; // password is plain text
}
}
/**
* Marks an password hash as disabled and returns the new hash string
*
* @param string $hash hash value to disable
* @return string disabled hash value
*/
function pwd_disable($hash) {
// check if password is disabled (old wrong LAM method)
if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) {
return $hash;
}
// check for "!" or "*" at beginning of password hash
else {
if (substr($hash, 0, 1) == "{") {
$pos = strpos($hash, "}");
if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) {
// hash already disabled
return $hash;
}
else return substr($hash, 0, $pos + 1) . "!" . substr($hash, $pos + 1, strlen($hash)); // not disabled
}
else return $hash; // password is plain text
}
}
/**
* Checks if a password hash is enabled/disabled
*
* @param string $hash password hash to check
* @return boolean true if the password is marked as enabled
*/
function pwd_is_enabled($hash) {
// disabled passwords have a "!" or "*" at the beginning (old wrong LAM method)
if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) return false;
if (substr($hash, 0, 1) == "{") {
$pos = strrpos($hash, "}");
// check if hash starts with "!" or "*"
if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) return false;
else return true;
}
else return true;
}
/**
* Generates a random password with 12 digits.
*
* @return String password
*/
function generateRandomPassword() {
$list = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_';
$password = '';
for ($i = 0; $i < 12; $i++) {
$rand = $_SESSION['ldap']->new_rand() % 65;
$password .= $list[$rand];
}
return $password;
}
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/**
* Returns an array with all Samba 3 domain entries under the given suffix
*
* @return array list of samba3domain objects
*/
function search_domains($server = null, $suffix = null) {
if ($suffix == null) {
$suffix = $_SESSION['config']->get_Suffix('smbDomain');
}
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$ret = array();
$attr = array("DN", "sambaDomainName", "sambaSID", "sambaNextRid", "sambaNextGroupRid",
"sambaNextUserRid", "sambaAlgorithmicRidBase", 'sambaMinPwdAge', 'sambaMaxPwdAge');
if ($server == null) {
$server = $_SESSION['ldap']->server();
}
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$units = searchLDAPByAttribute(null, null, 'sambaDomain', $attr, array('smbDomain'));
// extract attributes
for ($i = 0; $i < sizeof($units); $i++) {
$ret[$i] = new samba3domain();
$ret[$i]->dn = $units[$i]['dn'];
$ret[$i]->name = $units[$i]['sambadomainname'][0];
$ret[$i]->SID = $units[$i]['sambasid'][0];
if (isset($units[$i]['sambanextrid'][0])) $ret[$i]->nextRID = $units[$i]['sambanextrid'][0];
if (isset($units[$i]['sambanextgrouprid'][0])) $ret[$i]->nextGroupRID = $units[$i]['sambanextgrouprid'][0];
if (isset($units[$i]['sambanextuserrid'][0])) $ret[$i]->nextUserRID = $units[$i]['sambanextuserrid'][0];
if (isset($units[$i]['sambaalgorithmicridbase'][0])) $ret[$i]->RIDbase = $units[$i]['sambaalgorithmicridbase'][0];
if (isset($units[$i]['sambaminpwdage'][0])) $ret[$i]->minPwdAge = $units[$i]['sambaminpwdage'][0];
if (isset($units[$i]['sambamaxpwdage'][0])) $ret[$i]->maxPwdAge = $units[$i]['sambamaxpwdage'][0];
}
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return $ret;
}
/**
* Represents a Samba 3 domain entry
*
* @package modules
*/
class samba3domain {
/** DN */
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public $dn;
/** Domain name */
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public $name;
/** Domain SID */
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public $SID;
/** Next RID */
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public $nextRID;
/** Next user RID */
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public $nextUserRID;
/** Next group RID */
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public $nextGroupRID;
/** RID base to calculate RIDs, default 1000 */
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public $RIDbase = 1000;
/** seconds after the password can be changed */
public $minPwdAge;
/** seconds after the password must be changed */
public $maxPwdAge;
}
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/**
* Checks if a given value matches the selected regular expression.
*
* @param string $argument value to check
* @param string $regexp pattern name
* @return boolean true if matches, otherwise false
*/
function get_preg($argument, $regexp) {
/* Bug in php preg_match doesn't work correct with utf8
*/
$language = explode(":", $_SESSION['language']);
$language2 = explode ('.', $language[0]);
setlocale(LC_ALL, $language2[0]);
// First we check "positive" cases
$pregexpr = '';
switch ($regexp) {
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case 'password':
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$pregexpr = '/^([[:alnum:]\\^\\ \\|\\#\\*\\,\\.\\;\\:\\_\\+\\!\\%\\&\\/\\?\\{\\(\\)\\}\\[\\]\\$@=-])*$/u';
break;
case 'groupname': // all letters, numbers, space and ._- are allowed characters
case 'username':
case 'hostname':
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$pregexpr = '/^([[:alnum:]@\\.\\ \\_\\$-])+$/u';
break;
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case 'hostObject':
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$pregexpr = '/^[!]?([[:alnum:]@\\.\\ \\_\\$\\*-])+$/u';
break;
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case 'usernameList': // comma separated list of user names
case 'groupnameList': // comma separated list of group names
$pregexpr = '/^([[:alnum:]@\\.\\ \\_-])+(,([[:alnum:]@\\.\\ \\_-])+)*$/u';
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break;
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case 'realname': // Allow all but \, <, >, =, $, ?
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case 'cn':
$pregexpr = '/^[^\\\<>=\\$\\?]+(\\$)?$/';
break;
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case "telephone": // Allow letters, numbers, space, brackets, /-+.
$pregexpr = '/^(\\+)*([0-9a-zA-Z\\.\\ \\(\\)\\/-])*$/';
break;
case "email":
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$pregexpr = '/^([0-9a-zA-Z+\\/\\._-])+[@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*$/';
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 \, <, >, =, $, ?
case "postalCode":
case "street":
case "title":
case "employeeType":
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case "businessCategory":
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$pregexpr = '/^[^\\\<>=\\$\\?]*$/';
break;
case "homeDirectory": // Homapath, /path/......
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case "filePath":
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$pregexpr = '/^([\/]([[:alnum:]@\\$\\.\\ \\_-])+)+(\/)?$/u';
break;
case "digit": // Normal number
$pregexpr = '/^[[:digit:]]*$/';
break;
case "UNC": // UNC Path, e.g. \\server\share\folder\...
$pregexpr = '/^((([\\\][\\\])|(%))([a-zA-Z0-9%\\.-])+)([\\\]([[:alnum:]%\\.\\$\\ \\_-])+)+$/u';
break;
case "logonscript": // path to login-script. normal unix file
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$pregexpr = '/^(([\/\\\])*([[:alnum:]%\\.\\ \\$\\_-])+([\/\\\]([[:alnum:]%\\.\\ \\$\\_-])+)*((\\.bat)|(\\.cmd)|(\\.exe)|(\\.vbs)))*$/u';
break;
case "workstations": // comma separated list with windows-hosts
$pregexpr = '/^(([a-zA-Z0-9\\.\\_-])+(,[a-zA-Z0-9\\.\\_-])*)*$/';
break;
case "domainname": // Windows Domainname
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$pregexpr = '/^([A-Za-z0-9\\.\\_-])+$/';
break;
case "unixhost": // Unix hosts
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$pregexpr = '/^([a-z0-9,\\.\\*_-])*$/';
break;
case 'digit2': // Same as digit but also -1
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$pregexpr = '/^(([-][1])|([[:digit:]]*))$/';
break;
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case 'gecos':
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$pregexpr = '/^[[:alnum:] \\._-]+([,][[:alnum:] \\._-]+)*$/u';
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break;
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case 'macAddress':
$pregexpr = '/^[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){5}$/';
break;
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case 'date':
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$pregexpr = '/^((0?[1-9])|([1-2][0-9])|30|31)\\-((0?[1-9])|(1[0-2]))\\-[1-3][0-9][0-9][0-9]$/';
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break;
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case 'date2':
$pregexpr = '/^((0[1-9])|([1-2][0-9])|30|31)\\.((0[1-9])|(1[0-2]))\\.[1-3][0-9][0-9][0-9]$/';
break;
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case 'sambaLogonHours':
$pregexpr = '/^[0-9a-fA-F]{42}$/';
break;
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case 'DNSname':
$pregexpr = '/^[0-9a-zA-Z_-]+(\\.[0-9a-zA-Z_-]+)*$/';
break;
case 'nis_alias':
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$pregexpr = '/^([[:alnum:]@\\.\\ \\_-])+$/u';
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break;
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case 'nis_recipient':
$pregexpr = '/^([[:alnum:]+@\\.\\ \\_-])+$/u';
break;
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case 'country': // Allow all letters and space
$pregexpr = '/^[[:alpha:]]([[:alpha:] ])+$/u';
break;
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case 'dn': // LDAP DN
$pregexpr = '/^([^=,]+=[^=,]+)(,([^=,]+=[^=,]+))*$/';
break;
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case 'domainSID': // Samba domain SID
$pregexpr = "/^S\\-[0-9]\\-[0-9]\\-[0-9]{2,2}\\-[0-9]+\\-[0-9]+\\-[0-9]+$/";
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break;
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case 'ip': // IP address
$pregexpr = '/^[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}$/';
break;
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case 'ascii': // ASCII
$pregexpr = '/^[' . chr(1) . '-' . chr(128) . ']*$/';
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;
}
// 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;
}
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/**
* Escapes any special characters in an LDAP DN.
*
* @param String $dn DN
* @return String escaped DN
*/
function escapeDN($dn) {
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$dn = preg_replace('/[ ]*,[ ]*/', ',', $dn);
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return str_replace(
array(')', '(', ' ', '*'),
array('\\29', '\\28', '\\20', '\\2a'),
$dn
);
}
/**
* This will search the given LDAP suffix for all entries which have the given attribute.
*
* @param String $name attribute name (may be null)
* @param String $value attribute value
* @param String $objectClass object class (may be null)
* @param array $attributes list of attributes to return
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* @param array $scopes account types
* @return array list of found entries
*/
function searchLDAPByAttribute($name, $value, $objectClass, $attributes, $scopes) {
$return = array();
// build filter
$filter = '';
$filterParts = array();
if ($name != null) {
$filterParts[] = '(' . $name . '=' . $value . ')';
}
if ($objectClass != null) {
$filterParts[] = '(objectClass=' . $objectClass . ')';
}
if (sizeof($filterParts) == 1) {
$filter = $filterParts[0];
}
elseif (sizeof($filterParts) > 1) {
$filter = '(& ' . implode(' ', $filterParts) . ')';
}
for ($s = 0; $s < sizeof($scopes); $s++) {
// search LDAP
$sr = @ldap_search($_SESSION['ldap']->server(), escapeDN($_SESSION['config']->get_Suffix($scopes[$s])),
$filter, $attributes, 0, $_SESSION['config']->get_searchLimit(), 0, LDAP_DEREF_NEVER);
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if ($sr) {
$entries = ldap_get_entries($_SESSION['ldap']->server(), $sr);
if ($entries) {
$return = array_merge($return, cleanLDAPResult($entries));
}
@ldap_free_result($sr);
}
}
return $return;
}
/**
* This will search the given LDAP suffix for all entries which match the given filter.
*
* @param String $filter
* @param array $attributes list of attributes to return
* @param array $scopes account types
* @return array list of found entries
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*/
function searchLDAPByFilter($filter, $attributes, $scopes) {
$return = array();
for ($s = 0; $s < sizeof($scopes); $s++) {
// search LDAP
$sr = @ldap_search($_SESSION['ldap']->server(), escapeDN($_SESSION['config']->get_Suffix($scopes[$s])),
$filter, $attributes, 0, $_SESSION['config']->get_searchLimit(), 0, LDAP_DEREF_NEVER);
if ($sr) {
$entries = ldap_get_entries($_SESSION['ldap']->server(), $sr);
if ($entries) {
$return = array_merge($return, cleanLDAPResult($entries));
}
@ldap_free_result($sr);
}
}
return $return;
}
/**
* Runs an LDAP search.
*
* @param String $suffix LDAP suffix
* @param String $filter filter
* @param array $attributes list of attributes to return
* @return array list of found entries
*/
function searchLDAP($suffix, $filter, $attributes) {
$return = array();
$sr = @ldap_search($_SESSION['ldap']->server(), escapeDN($suffix), $filter, $attributes,
0, $_SESSION['config']->get_searchLimit(), 0, LDAP_DEREF_NEVER);
if ($sr) {
$entries = ldap_get_entries($_SESSION['ldap']->server(), $sr);
if ($entries) {
$return = cleanLDAPResult($entries);
}
@ldap_free_result($sr);
}
return $return;
}
/**
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* Returns the parameters for a StatusMessage of the last LDAP search.
*
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* @return array parameters for StatusMessage or null if all was ok
*/
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function getLastLDAPError() {
$errorNumber = ldap_errno($_SESSION["ldap"]->server());
switch ($errorNumber) {
// all ok
case 0:
return null;
break;
// size limit exceeded
case 4:
$error = array("WARN", _("LDAP sizelimit exceeded, not all entries are shown."));
if ($_SESSION['config']->get_searchLimit() == 0) {
// server limit exceeded
$error[] = _("See the manual for instructions to solve this problem.");
}
return $error;
break;
// other errors
default:
return array("ERROR", _("LDAP search failed! Please check your preferences."), ldap_error($_SESSION["ldap"]->server()));
break;
}
}
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/**
* Cleans the result of an LDAP search.
* This will remove all 'count' entries and also all numeric array keys.
*
* @param array $entries LDAP entries in format $entries[entry number][attribute name][attribute values]
* @return array cleaned entries
*/
function cleanLDAPResult($entries) {
if (isset($entries['count'])) {
unset($entries['count']);
}
// iterate over all results
for ($e = 0; $e < sizeof($entries); $e++) {
// remove 'count' entries and numerical entries
for ($i = 0; $i < $entries[$e]['count']; $i++) {
if (isset($entries[$e][$i])) {
unset($entries[$e][$i]);
}
}
unset($entries[$e]['count']);
$attrNames = array_keys($entries[$e]);
for ($i = 0; $i < sizeof($attrNames); $i++) {
if (is_array($entries[$e][$attrNames[$i]])) {
unset($entries[$e][$attrNames[$i]]['count']);
}
}
}
return $entries;
}
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/**
* Transforms a DN into a more user friendly format.
* E.g. "dc=company,dc=de" is transformed to "company > de".
*
* @param String $dn DN
* @return String transformed DN
*/
function getAbstractDN($dn) {
if ($dn == '') {
return '';
}
$parts = explode(',', $dn);
for ($i = 0; $i < sizeof($parts); $i++) {
$subparts = explode('=', $parts[$i]);
if (sizeof($subparts) == 2) {
$parts[$i] = $subparts[1];
}
}
return implode(' > ', $parts);
}
?>