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- <?php
- // +----------------------------------------------------------------------+
- // | PEAR :: File :: Passwd :: Smb |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 3.0 of the PHP license, |
- // | that is available at http://www.php.net/license/3_0.txt |
- // | If you did not receive a copy of the PHP license and are unable |
- // | to obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 2003-2004 Michael Wallner <mike@iworks.at> |
- // +----------------------------------------------------------------------+
- //
- // $Id: Smb.php,v 1.15 2004/06/07 19:19:47 mike Exp $
-
- /**
- * Manipulate SMB server passwd files.
- *
- * @author Michael Bretterklieber <michael@bretterklieber.com>
- * @author Michael Wallner <mike@php.net>
- * @package File_Passwd
- */
-
- /**
- * Requires File::Passwd::Common
- */
- require_once 'File/Passwd/Common.php';
-
- /**
- * Requires Crypt::CHAP
- */
- require_once 'Crypt/CHAP.php';
-
- /**
- * Manipulate SMB server passwd files.
- *
- * # Usage Example 1 (modifying existing file):
- * <code>
- * $f = &File_Passwd::factory('SMB');
- * $f->setFile('./smbpasswd');
- * $f->load();
- * $f->addUser('sepp3', 'MyPw', array('userid' => 12));
- * $f->changePasswd('sepp', 'MyPw');
- * $f->delUser('karli');
- * foreach($f->listUser() as $user => $data) {
- * echo $user . ':' . implode(':', $data) ."\n";
- * }
- * $f->save();
- * </code>
- *
- * # Usage Example 2 (creating a new file):
- * <code>
- * $f = &File_Passwd::factory('SMB');
- * $f->setFile('./smbpasswd');
- * $f->addUser('sepp1', 'MyPw', array('userid'=> 12));
- * $f->addUser('sepp3', 'MyPw', array('userid' => 1000));
- * $f->save();
- * </code>
- *
- * # Usage Example 3 (authentication):
- * <code>
- * $f = &File_Passwd::factory('SMB');
- * $f->setFile('./smbpasswd');
- * $f->load();
- * if (true === $f->verifyPasswd('sepp', 'MyPw')) {
- * echo "User valid";
- * } else {
- * echo "User invalid or disabled";
- * }
- * </code>
- *
- * @author Michael Bretterklieber <michael@bretterklieber.com>
- * @author Michael Wallner <mike@php.net>
- * @package File_Passwd
- * @version $Revision: 1.15 $
- * @access public
- */
- class File_Passwd_Smb extends File_Passwd_Common
- {
- /**
- * Object which generates the NT-Hash and LAN-Manager-Hash passwds
- *
- * @access protected
- * @var object
- */
- var $msc;
-
- /**
- * Constructor
- *
- * @access public
- * @param string $file SMB passwd file
- */
- function File_Passwd_Smb($file = 'smbpasswd')
- {
- File_Passwd_Smb::__construct($file);
- }
-
- /**
- * Constructor (ZE2)
- *
- * Rewritten because we want to init our crypt engine.
- *
- * @access public
- * @param string $file SMB passwd file
- */
- function __construct($file = 'smbpasswd')
- {
- $this->setFile($file);
- $this->msc = &new Crypt_CHAP_MSv1;
- }
-
- /**
- * Fast authentication of a certain user
- *
- * Returns a PEAR_Error if:
- * o file doesn't exist
- * o file couldn't be opened in read mode
- * o file couldn't be locked exclusively
- * o file couldn't be unlocked (only if auth fails)
- * o file couldn't be closed (only if auth fails)
- * o invalid encryption method <var>$nt_or_lm</var> was provided
- *
- * @static call this method statically for a reasonable fast authentication
- * @access public
- * @return mixed true if authenticated, false if not or PEAR_Error
- * @param string $file path to passwd file
- * @param string $user user to authenticate
- * @param string $pass plaintext password
- * @param string $nt_or_lm encryption mode to use (NT or LM hash)
- */
- function staticAuth($file, $user, $pass, $nt_or_lm = 'nt')
- {
- $line = File_Passwd_Common::_auth($file, $user);
- if (!$line || PEAR::isError($line)) {
- return $line;
- }
- @list(,,$lm,$nt) = explode(':', $line);
- $chap = &new Crypt_CHAP_MSv1;
-
- switch(strToLower($nt_or_lm)){
- case FILE_PASSWD_NT:
- $real = $nt;
- $crypted = $chap->ntPasswordHash($pass);
- break;
- case FILE_PASSWD_LM:
- $real = $lm;
- $crypted = $chap->lmPasswordHash($pass);
- break;
- default:
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_INVALID_ENC_MODE_STR, $nt_or_lm),
- FILE_PASSWD_E_INVALID_ENC_MODE
- );
- }
- return (strToUpper(bin2hex($crypted)) === $real);
- }
-
- /**
- * Parse smbpasswd file
- *
- * Returns a PEAR_Error if passwd file has invalid format.
- *
- * @access public
- * @return mixed true on success or PEAR_Error
- */
- function parse()
- {
- foreach ($this->_contents as $line){
- $info = explode(':', $line);
- if (count($info) < 4) {
- return PEAR::raiseError(
- FILE_PASSWD_E_INVALID_FORMAT_STR,
- FILE_PASSWD_E_INVALID_FORMAT
- );
- }
- $user = array_shift($info);
- if (!empty($user)) {
- array_walk($info, 'trim');
- $this->_users[$user] = @array(
- 'userid' => $info[0],
- 'lmhash' => $info[1],
- 'nthash' => $info[2],
- 'flags' => $info[3],
- 'lct' => $info[4],
- 'comment' => $info[5]
- );
- }
- }
- $this->_contents = array();
- return true;
- }
-
- /**
- * Add a user
- *
- * Returns a PEAR_Error if:
- * o user already exists
- * o user contains illegal characters
- *
- * @throws PEAR_Error
- * @return mixed true on success or PEAR_Error
- * @access public
- * @param string $user the user to add
- * @param string $pass the new plaintext password
- * @param array $params additional properties of user
- * + userid
- * + comment
- * @param boolean $isMachine whether to add an machine account
- */
- function addUser($user, $pass, $params, $isMachine = false)
- {
- if ($this->userExists($user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_EXISTS_ALREADY_STR, 'User ', $user),
- FILE_PASSWD_E_EXISTS_ALREADY
- );
- }
- if (!preg_match($this->_pcre, $user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_INVALID_CHARS_STR, 'User ', $user),
- FILE_PASSWD_E_INVALID_CHARS
- );
- }
- if ($isMachine) {
- $flags = '[W ]';
- $user .= '$';
- } else {
- $flags = '[U ]';
- }
- $this->_users[$user] = array(
- 'flags' => $flags,
- 'userid' => (int)@$params['userid'],
- 'comment' => trim(@$params['comment']),
- 'lct' => 'LCT-' . strToUpper(dechex(time()))
- );
- return $this->changePasswd($user, $pass);
- }
-
- /**
- * Modify a certain user
- *
- * <b>You should not modify the password with this method
- * unless it is already encrypted as nthash and lmhash!</b>
- *
- * Returns a PEAR_Error if:
- * o user doesn't exist
- * o an invalid property was supplied
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true on success or PEAR_Error
- * @param string $user the user to modify
- * @param array $params an associative array of properties to change
- */
- function modUser($user, $params)
- {
- if (!$this->userExists($user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_EXISTS_NOT_STR, 'User ', $user),
- FILE_PASSWD_E_EXISTS_NOT
- );
- }
- if (!preg_match($this->_pcre, $user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_INVALID_CHARS_STR, 'User ', $user),
- FILE_PASSWD_E_INVALID_CHARS
- );
- }
- foreach ($params as $key => $value){
- $key = strToLower($key);
- if (!isset($this->_users[$user][$key])) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_INVALID_PROPERTY_STR, $key),
- FILE_PASSWD_E_INVALID_PROPERTY
- );
- }
- $this->_users[$user][$key] = trim($value);
- $this->_users[$user]['lct']= 'LCT-' . strToUpper(dechex(time()));
- }
- return true;
- }
-
- /**
- * Change the passwd of a certain user
- *
- * Returns a PEAR_Error if <var>$user</var> doesn't exist.
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true on success or PEAR_Error
- * @param string $user the user whose passwd should be changed
- * @param string $pass the new plaintext passwd
- */
- function changePasswd($user, $pass)
- {
- if (!$this->userExists($user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_EXISTS_NOT_STR, 'User ', $user),
- FILE_PASSWD_E_EXISTS_NOT
- );
- }
- if (empty($pass)) {
- $nthash = $lmhash = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
- } else {
- $nthash = strToUpper(bin2hex($this->msc->ntPasswordHash($pass)));
- $lmhash = strToUpper(bin2hex($this->msc->lmPasswordHash($pass)));
- }
- $this->_users[$user]['nthash'] = $nthash;
- $this->_users[$user]['lmhash'] = $lmhash;
- return true;
- }
-
- /**
- * Verifies a user's password
- *
- * Prefer NT-Hash instead of weak LAN-Manager-Hash
- *
- * Returns a PEAR_Error if:
- * o user doesn't exist
- * o user is disabled
- *
- * @return mixed true if passwds equal, false if they don't or PEAR_Error
- * @access public
- * @param string $user username
- * @param string $nthash NT-Hash in hex
- * @param string $lmhash LAN-Manager-Hash in hex
- */
- function verifyEncryptedPasswd($user, $nthash, $lmhash = '')
- {
- if (!$this->userExists($user)) {
- return PEAR::raiseError(
- sprintf(FILE_PASSWD_E_EXISTS_NOT_STR, 'User ', $user),
- FILE_PASSWD_E_EXISTS_NOT
- );
- }
- if (strstr($this->_users[$user]['flags'], 'D')) {
- return PEAR::raiseError("User '$user' is disabled.", 0);
- }
- if (!empty($nthash)) {
- return $this->_users[$user]['nthash'] === strToUpper($nthash);
- }
- if (!empty($lmhash)) {
- return $this->_users[$user]['lm'] === strToUpper($lmhash);
- }
- return false;
- }
-
- /**
- * Verifies an account with the given plaintext password
- *
- * Returns a PEAR_Error if:
- * o user doesn't exist
- * o user is disabled
- *
- * @throws PEAR_Error
- * @return mixed true if passwds equal, false if they don't or PEAR_Error
- * @access public
- * @param string $user username
- * @param string $pass the plaintext password
- */
- function verifyPasswd($user, $pass)
- {
- $nthash = bin2hex($this->msc->ntPasswordHash($pass));
- $lmhash = bin2hex($this->msc->lmPasswordHash($pass));
- return $this->verifyEncryptedPasswd($user, $nthash, $lmhash);
- }
-
- /**
- * Apply changes and rewrite CVS passwd file
- *
- * Returns a PEAR_Error if:
- * o directory in which the file should reside couldn't be created
- * o file couldn't be opened in write mode
- * o file couldn't be locked exclusively
- * o file couldn't be unlocked
- * o file couldn't be closed
- *
- * @throws PEAR_Error
- * @access public
- * @return mixed true on success or PEAR_Error
- */
- function save()
- {
- $content = '';
- foreach ($this->_users as $user => $userdata) {
- $content .= $user . ':' .
- $userdata['userid'] . ':' .
- $userdata['lmhash'] . ':' .
- $userdata['nthash'] . ':' .
- $userdata['flags'] . ':' .
- $userdata['lct'] . ':' .
- $userdata['comment']. "\n";
- }
- return $this->_save($content);
- }
-
- /**
- * Generate Password
- *
- * @static
- * @access public
- * @return string The crypted password.
- * @param string $pass The plaintext password.
- * @param string $mode The encryption mode to use (nt|lm).
- */
- function generatePassword($pass, $mode = 'nt')
- {
- $chap = &new Crypt_CHAP_MSv1;
- $hash = strToLower($mode) == 'nt' ?
- $chap->ntPasswordHash($pass) :
- $chap->lmPasswordHash($pass);
- return strToUpper(bin2hex($hash));
- }
-
- }
- ?>
-