includes/AuthPlugin.php

   1 <?php
   2 /**
   3  * Authentication plugin interface
   4  *
   5  * Copyright © 2004 Brion Vibber <brion@pobox.com>
   6  * https://www.mediawiki.org/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  */
  25
  26 /**
  27  * Authentication plugin interface. Instantiate a subclass of AuthPlugin
  28  * and set $wgAuth to it to authenticate against some external tool.
  29  *
  30  * The default behavior is not to do anything, and use the local user
  31  * database for all authentication. A subclass can require that all
  32  * accounts authenticate externally, or use it only as a fallback; also
  33  * you can transparently create internal wiki accounts the first time
  34  * someone logs in who can be authenticated externally.
  35  *
  36  * @deprecated since 1.27
  37  */
  38 class AuthPlugin {
  39         /**
  40          * @var string
  41          */
  42         protected $domain;
  43
  44         /**
  45          * Check whether there exists a user account with the given name.
  46          * The name will be normalized to MediaWiki's requirements, so
  47          * you might need to munge it (for instance, for lowercase initial
  48          * letters).
  49          *
  50          * @param string $username Username.
  51          * @return bool
  52          */
  53         public function userExists( $username ) {
  54                 # Override this!
  55                 return false;
  56         }
  57
  58         /**
  59          * Check if a username+password pair is a valid login.
  60          * The name will be normalized to MediaWiki's requirements, so
  61          * you might need to munge it (for instance, for lowercase initial
  62          * letters).
  63          *
  64          * @param string $username Username.
  65          * @param string $password User password.
  66          * @return bool
  67          */
  68         public function authenticate( $username, $password ) {
  69                 # Override this!
  70                 return false;
  71         }
  72
  73         /**
  74          * Modify options in the login template.
  75          *
  76          * @param BaseTemplate $template
  77          * @param string $type 'signup' or 'login'. Added in 1.16.
  78          */
  79         public function modifyUITemplate( &$template, &$type ) {
  80                 # Override this!
  81                 $template->set( 'usedomain', false );
  82         }
  83
  84         /**
  85          * Set the domain this plugin is supposed to use when authenticating.
  86          *
  87          * @param string $domain Authentication domain.
  88          */
  89         public function setDomain( $domain ) {
  90                 $this->domain = $domain;
  91         }
  92
  93         /**
  94          * Get the user's domain
  95          *
  96          * @return string
  97          */
  98         public function getDomain() {
  99                 if ( isset( $this->domain ) ) {
 100                         return $this->domain;
 101                 } else {
 102                         return 'invaliddomain';
 103                 }
 104         }
 105
 106         /**
 107          * Check to see if the specific domain is a valid domain.
 108          *
 109          * @param string $domain Authentication domain.
 110          * @return bool
 111          */
 112         public function validDomain( $domain ) {
 113                 # Override this!
 114                 return true;
 115         }
 116
 117         /**
 118          * When a user logs in, optionally fill in preferences and such.
 119          * For instance, you might pull the email address or real name from the
 120          * external user database.
 121          *
 122          * The User object is passed by reference so it can be modified; don't
 123          * forget the & on your function declaration.
 124          *
 125          * @deprecated since 1.26, use the UserLoggedIn hook instead. And assigning
 126          *  a different User object to $user is no longer supported.
 127          * @param User $user
 128          * @return bool
 129          */
 130         public function updateUser( &$user ) {
 131                 # Override this and do something
 132                 return true;
 133         }
 134
 135         /**
 136          * Return true if the wiki should create a new local account automatically
 137          * when asked to login a user who doesn't exist locally but does in the
 138          * external auth database.
 139          *
 140          * If you don't automatically create accounts, you must still create
 141          * accounts in some way. It's not possible to authenticate without
 142          * a local account.
 143          *
 144          * This is just a question, and shouldn't perform any actions.
 145          *
 146          * @return bool
 147          */
 148         public function autoCreate() {
 149                 return false;
 150         }
 151
 152         /**
 153          * Allow a property change? Properties are the same as preferences
 154          * and use the same keys. 'Realname' 'Emailaddress' and 'Nickname'
 155          * all reference this.
 156          *
 157          * @param string $prop
 158          *
 159          * @return bool
 160          */
 161         public function allowPropChange( $prop = '' ) {
 162                 if ( $prop == 'realname' && is_callable( [ $this, 'allowRealNameChange' ] ) ) {
 163                         return $this->allowRealNameChange();
 164                 } elseif ( $prop == 'emailaddress' && is_callable( [ $this, 'allowEmailChange' ] ) ) {
 165                         return $this->allowEmailChange();
 166                 } elseif ( $prop == 'nickname' && is_callable( [ $this, 'allowNickChange' ] ) ) {
 167                         return $this->allowNickChange();
 168                 } else {
 169                         return true;
 170                 }
 171         }
 172
 173         /**
 174          * Can users change their passwords?
 175          *
 176          * @return bool
 177          */
 178         public function allowPasswordChange() {
 179                 return true;
 180         }
 181
 182         /**
 183          * Should MediaWiki store passwords in its local database?
 184          *
 185          * @return bool
 186          */
 187         public function allowSetLocalPassword() {
 188                 return true;
 189         }
 190
 191         /**
 192          * Set the given password in the authentication database.
 193          * As a special case, the password may be set to null to request
 194          * locking the password to an unusable value, with the expectation
 195          * that it will be set later through a mail reset or other method.
 196          *
 197          * Return true if successful.
 198          *
 199          * @param User $user
 200          * @param string $password Password.
 201          * @return bool
 202          */
 203         public function setPassword( $user, $password ) {
 204                 return true;
 205         }
 206
 207         /**
 208          * Update user information in the external authentication database.
 209          * Return true if successful.
 210          *
 211          * @deprecated since 1.26, use the UserSaveSettings hook instead.
 212          * @param User $user
 213          * @return bool
 214          */
 215         public function updateExternalDB( $user ) {
 216                 return true;
 217         }
 218
 219         /**
 220          * Update user groups in the external authentication database.
 221          * Return true if successful.
 222          *
 223          * @deprecated since 1.26, use the UserGroupsChanged hook instead.
 224          * @param User $user
 225          * @param array $addgroups Groups to add.
 226          * @param array $delgroups Groups to remove.
 227          * @return bool
 228          */
 229         public function updateExternalDBGroups( $user, $addgroups, $delgroups = [] ) {
 230                 return true;
 231         }
 232
 233         /**
 234          * Check to see if external accounts can be created.
 235          * Return true if external accounts can be created.
 236          * @return bool
 237          */
 238         public function canCreateAccounts() {
 239                 return false;
 240         }
 241
 242         /**
 243          * Add a user to the external authentication database.
 244          * Return true if successful.
 245          *
 246          * @param User $user Only the name should be assumed valid at this point
 247          * @param string $password
 248          * @param string $email
 249          * @param string $realname
 250          * @return bool
 251          */
 252         public function addUser( $user, $password, $email = '', $realname = '' ) {
 253                 return true;
 254         }
 255
 256         /**
 257          * Return true to prevent logins that don't authenticate here from being
 258          * checked against the local database's password fields.
 259          *
 260          * This is just a question, and shouldn't perform any actions.
 261          *
 262          * @return bool
 263          */
 264         public function strict() {
 265                 return false;
 266         }
 267
 268         /**
 269          * Check if a user should authenticate locally if the global authentication fails.
 270          * If either this or strict() returns true, local authentication is not used.
 271          *
 272          * @param string $username Username.
 273          * @return bool
 274          */
 275         public function strictUserAuth( $username ) {
 276                 return false;
 277         }
 278
 279         /**
 280          * When creating a user account, optionally fill in preferences and such.
 281          * For instance, you might pull the email address or real name from the
 282          * external user database.
 283          *
 284          * The User object is passed by reference so it can be modified; don't
 285          * forget the & on your function declaration.
 286          *
 287          * @deprecated since 1.26, use the UserLoggedIn hook instead. And assigning
 288          *  a different User object to $user is no longer supported.
 289          * @param User $user
 290          * @param bool $autocreate True if user is being autocreated on login
 291          */
 292         public function initUser( &$user, $autocreate = false ) {
 293                 # Override this to do something.
 294         }
 295
 296         /**
 297          * If you want to munge the case of an account name before the final
 298          * check, now is your chance.
 299          * @param string $username
 300          * @return string
 301          */
 302         public function getCanonicalName( $username ) {
 303                 return $username;
 304         }
 305
 306         /**
 307          * Get an instance of a User object
 308          *
 309          * @param User $user
 310          *
 311          * @return AuthPluginUser
 312          */
 313         public function getUserInstance( User &$user ) {
 314                 return new AuthPluginUser( $user );
 315         }
 316
 317         /**
 318          * Get a list of domains (in HTMLForm options format) used.
 319          *
 320          * @return array
 321          */
 322         public function domainList() {
 323                 return [];
 324         }
 325 }
 326
 327 /**
 328  * @deprecated since 1.27
 329  */
 330 class AuthPluginUser {
 331         function __construct( $user ) {
 332                 # Override this!
 333         }
 334
 335         public function getId() {
 336                 # Override this!
 337                 return -1;
 338         }
 339
 340         /**
 341          * Indicate whether the user is locked
 342          * @deprecated since 1.26, use the UserIsLocked hook instead.
 343          * @return bool
 344          */
 345         public function isLocked() {
 346                 # Override this!
 347                 return false;
 348         }
 349
 350         /**
 351          * Indicate whether the user is hidden
 352          * @deprecated since 1.26, use the UserIsHidden hook instead.
 353          * @return bool
 354          */
 355         public function isHidden() {
 356                 # Override this!
 357                 return false;
 358         }
 359
 360         /**
 361          * @deprecated since 1.28, use SessionManager::invalidateSessionForUser() instead.
 362          */
 363         public function resetAuthToken() {
 364                 # Override this!
 365                 return true;
 366         }
 367 }