/usr/share/php/Horde/Auth/Passwd.php is in php-horde-auth 2.2.2-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 | <?php
/**
* Copyright 1997-2007 Rasmus Lerdorf <rasmus@php.net>
* Copyright 2002-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you did
* not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @author Rasmus Lerdorf <rasmus@php.net>
* @author Chuck Hagenbuch <chuck@horde.org>
* @category Horde
* @license http://www.horde.org/licenses/lgpl21 LGPL-2.1
* @package Auth
*/
/**
* The Horde_Auth_Passwd class provides a passwd-file implementation of the
* Horde authentication system.
*
* @author Rasmus Lerdorf <rasmus@php.net>
* @author Chuck Hagenbuch <chuck@horde.org>
* @category Horde
* @copyright 1997-2007 Rasmus Lerdorf <rasmus@php.net>
* @copyright 2002-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL-2.1
* @package Auth
*/
class Horde_Auth_Passwd extends Horde_Auth_Base
{
/**
* An array of capabilities, so that the driver can report which
* operations it supports and which it doesn't.
*
* @var array
*/
protected $_capabilities = array(
'list' => true,
'authenticate' => true,
);
/**
* Hash list of users.
*
* @var array
*/
protected $_users = null;
/**
* Array of groups and members.
*
* @var array
*/
protected $_groups = array();
/**
* Filehandle for lockfile.
*
* @var resource
*/
protected $_fplock;
/**
* Locking state.
*
* @var boolean
*/
protected $_locked;
/**
* List of users that should be excluded from being listed/handled
* in any way by this driver.
*
* @var array
*/
protected $_exclude = array(
'root', 'daemon', 'bin', 'sys', 'sync', 'games', 'man', 'lp', 'mail',
'news', 'uucp', 'proxy', 'postgres', 'www-data', 'backup', 'operator',
'list', 'irc', 'gnats', 'nobody', 'identd', 'sshd', 'gdm', 'postfix',
'mysql', 'cyrus', 'ftp',
);
/**
* Constructor.
*
* @param array $params Connection parameters:
* <pre>
* 'encryption' - (string) The encryption to use to store the password in
* the table (e.g. plain, crypt, md5-hex, md5-base64, smd5,
* sha, ssha, aprmd5).
* DEFAULT: 'crypt-des'
* 'filename' - (string) [REQUIRED] The passwd file to use.
* 'lock' - (boolean) Should we lock the passwd file? The password file
* cannot be changed (add, edit, or delete users) unless this is
* true.
* DEFAULT: false
* 'show_encryption' - (boolean) Whether or not to prepend the encryption
* in the password field.
* DEFAULT: false
* </pre>
*
* @throws InvalidArgumentException
*/
public function __construct(array $params = array())
{
if (!isset($params['filename'])) {
throw new InvalidArgumentException('Missing filename parameter.');
}
$params = array_merge(array(
'encryption' => 'crypt-des',
'lock' => false,
'show_encryption' => false
), $params);
parent::__construct($params);
}
/**
* Writes changes to passwd file and unlocks it. Takes no arguments and
* has no return value. Called on script shutdown.
*/
public function __destruct()
{
if ($this->_locked) {
foreach ($this->_users as $user => $pass) {
$data = $user . ':' . $pass;
if ($this->_users[$user]) {
$data .= ':' . $this->_users[$user];
}
fputs($this->_fplock, $data . "\n");
}
rename($this->_lockfile, $this->_params['filename']);
flock($this->_fplock, LOCK_UN);
$this->_locked = false;
fclose($this->_fplock);
}
}
/**
* Queries the current Auth object to find out if it supports the given
* capability.
*
* @param string $capability The capability to test for.
*
* @return boolean Whether or not the capability is supported.
*/
public function hasCapability($capability)
{
if ($this->_params['lock']) {
switch ($capability) {
case 'add':
case 'update':
case 'resetpassword':
case 'remove':
return true;
}
}
return parent::hasCapability($capability);
}
/**
* Read and, if requested, lock the password file.
*
* @throws Horde_Auth_Exception
*/
protected function _read()
{
if (is_array($this->_users)) {
return;
}
if (empty($this->_params['filename'])) {
throw new Horde_Auth_Exception('No password file set.');
}
if ($this->_params['lock']) {
$this->_fplock = fopen(sys_get_temp_dir() . '/passwd.lock', 'w');
flock($this->_fplock, LOCK_EX);
$this->_locked = true;
}
$fp = fopen($this->_params['filename'], 'r');
if (!$fp) {
throw new Horde_Auth_Exception("Couldn't open '" . $this->_params['filename'] . "'.");
}
$this->_users = array();
while (!feof($fp)) {
$line = trim(fgets($fp, 256));
if (empty($line)) {
continue;
}
$parts = explode(':', $line);
if (!count($parts)) {
continue;
}
$user = $parts[0];
$userinfo = array();
if (strlen($user) && !in_array($user, $this->_exclude)) {
if (isset($parts[1])) {
$userinfo['password'] = $parts[1];
}
if (isset($parts[2])) {
$userinfo['uid'] = $parts[2];
}
if (isset($parts[3])) {
$userinfo['gid'] = $parts[3];
}
if (isset($parts[4])) {
$userinfo['info'] = $parts[4];
}
if (isset($parts[5])) {
$userinfo['home'] = $parts[5];
}
if (isset($parts[6])) {
$userinfo['shell'] = $parts[6];
}
$this->_users[$user] = $userinfo;
}
}
fclose($fp);
if (!empty($this->_params['group_filename'])) {
$fp = fopen($this->_params['group_filename'], 'r');
if (!$fp) {
throw new Horde_Auth_Exception("Couldn't open '" . $this->_params['group_filename'] . "'.");
}
$this->_groups = array();
while (!feof($fp)) {
$line = trim(fgets($fp));
if (empty($line)) {
continue;
}
$parts = explode(':', $line);
$group = array_shift($parts);
$users = array_pop($parts);
$this->_groups[$group] = array_flip(preg_split('/\s*[,\s]\s*/', trim($users), -1, PREG_SPLIT_NO_EMPTY));
}
fclose($fp);
}
}
/**
* Find out if a set of login credentials are valid.
*
* @param string $userId The userId to check.
* @param array $credentials An array of login credentials.
*
* @throws Horde_Auth_Exception
*/
protected function _authenticate($userId, $credentials)
{
if (empty($credentials['password'])) {
throw new Horde_Auth_Exception('', Horde_Auth::REASON_BADLOGIN);
}
try {
$this->_read();
} catch (Horde_Auth_Exception $e) {
if ($this->_logger) {
$this->_logger->log($e, 'ERR');
}
throw new Horde_Auth_Exception('', Horde_Auth::REASON_FAILED);
}
if (!isset($this->_users[$userId]) ||
!$this->_comparePasswords($this->_users[$userId]['password'], $credentials['password'])) {
throw new Horde_Auth_Exception('', Horde_Auth::REASON_BADLOGIN);
}
if (!empty($this->_params['required_groups'])) {
$allowed = false;
foreach ($this->_params['required_groups'] as $group) {
if (isset($this->_groups[$group][$userId])) {
$allowed = true;
break;
}
}
if (!$allowed) {
throw new Horde_Auth_Exception('', Horde_Auth::REASON_BADLOGIN);
}
}
}
/**
* Lists all users in the system.
*
* @param boolean $sort Sort the users?
*
* @return array The array of userIds.
* @throws Horde_Auth_Exception
*/
public function listUsers($sort = false)
{
$this->_read();
$users = array_keys($this->_users);
if (empty($this->_params['required_groups'])) {
return $this->_sort($users, $sort);
}
$groupUsers = array();
foreach ($this->_params['required_groups'] as $group) {
$groupUsers = array_merge($groupUsers, array_intersect($users, array_keys($this->_groups[$group])));
}
return $this->_sort($groupUsers, $sort);
}
/**
* Add a set of authentication credentials.
*
* @param string $userId The userId to add.
* @param array $credentials The credentials to add.
*
* @throws Horde_Auth_Exception
*/
public function addUser($userId, $credentials)
{
$this->_read();
if (!$this->_locked) {
throw new Horde_Auth_Exception('Password file not locked');
}
if (isset($this->_users[$userId])) {
throw new Horde_Auth_Exception("Couldn't add user '$userId', because the user already exists.");
}
$this->_users[$userId] = array(
'password' => Horde_Auth::getCryptedPassword($credentials['password'],
'',
$this->_params['encryption'],
$this->_params['show_encryption']),
);
}
/**
* Update a set of authentication credentials.
*
* @param string $oldID The old userId.
* @param string $newID The new userId.
* @param array $credentials The new credentials
*
* @throws Horde_Auth_Exception
*/
public function updateUser($oldID, $newID, $credentials)
{
$this->_read();
if (!$this->_locked) {
throw new Horde_Auth_Exception('Password file not locked');
}
if (!isset($this->_users[$oldID])) {
throw new Horde_Auth_Exception("Couldn't modify user '$oldID', because the user doesn't exist.");
}
$this->_users[$newID] = array(
'password' => Horde_Auth::getCryptedPassword($credentials['password'],
'',
$this->_params['encryption'],
$this->_params['show_encryption']),
);
return true;
}
/**
* Reset a user's password. Used for example when the user does not
* remember the existing password.
*
* @param string $userId The user id for which to reset the password.
*
* @return string The new password.
* @throws Horde_Auth_Exception
*/
public function resetPassword($userId)
{
/* Get a new random password. */
$password = Horde_Auth::genRandomPassword();
$this->updateUser($userId, $userId, array('password' => $password));
return $password;
}
/**
* Delete a set of authentication credentials.
*
* @param string $userId The userId to delete.
*
* @throws Horde_Auth_Exception
*/
public function removeUser($userId)
{
$this->_read();
if (!$this->_locked) {
throw new Horde_Auth_Exception('Password file not locked');
}
if (!isset($this->_users[$userId])) {
throw new Horde_Auth_Exception("Couldn't delete user '$userId', because the user doesn't exist.");
}
unset($this->_users[$userId]);
}
/**
* Compare an encrypted password to a plaintext string to see if
* they match.
*
* @param string $encrypted The crypted password to compare against.
* @param string $plaintext The plaintext password to verify.
*
* @return boolean True if matched, false otherwise.
*/
protected function _comparePasswords($encrypted, $plaintext)
{
return $encrypted == Horde_Auth::getCryptedPassword($plaintext,
$encrypted,
$this->_params['encryption'],
$this->_params['show_encryption']);
}
}
|