includes/AuthPlugin.php

   1 <?php
   2 /**
   3  */
   4 # Copyright (C) 2004 Brion Vibber <brion@pobox.com>
   5 # http://www.mediawiki.org/
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License along
  18 # with this program; if not, write to the Free Software Foundation, Inc.,
  19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20 # http://www.gnu.org/copyleft/gpl.html
  21
  22 /**
  23  * Authentication plugin interface. Instantiate a subclass of AuthPlugin
  24  * and set $wgAuth to it to authenticate against some external tool.
  25  *
  26  * The default behavior is not to do anything, and use the local user
  27  * database for all authentication. A subclass can require that all
  28  * accounts authenticate externally, or use it only as a fallback; also
  29  * you can transparently create internal wiki accounts the first time
  30  * someone logs in who can be authenticated externally.
  31  *
  32  * This interface is new, and might change a bit before 1.4.0 final is
  33  * done...
  34  *
  35  */
  36 class AuthPlugin {
  37         /**
  38          * Check whether there exists a user account with the given name.
  39          * The name will be normalized to MediaWiki's requirements, so
  40          * you might need to munge it (for instance, for lowercase initial
  41          * letters).
  42          *
  43          * @param $username String: username.
  44          * @return bool
  45          * @public
  46          */
  47         function userExists( $username ) {
  48                 # Override this!
  49                 return false;
  50         }
  51
  52         /**
  53          * Check if a username+password pair is a valid login.
  54          * The name will be normalized to MediaWiki's requirements, so
  55          * you might need to munge it (for instance, for lowercase initial
  56          * letters).
  57          *
  58          * @param $username String: username.
  59          * @param $password String: user password.
  60          * @return bool
  61          * @public
  62          */
  63         function authenticate( $username, $password ) {
  64                 # Override this!
  65                 return false;
  66         }
  67
  68         /**
  69          * Modify options in the login template.
  70          *
  71          * @param $template UserLoginTemplate object.
  72          * @public
  73          */
  74         function modifyUITemplate( &$template ) {
  75                 # Override this!
  76                 $template->set( 'usedomain', false );
  77         }
  78
  79         /**
  80          * Set the domain this plugin is supposed to use when authenticating.
  81          *
  82          * @param $domain String: authentication domain.
  83          * @public
  84          */
  85         function setDomain( $domain ) {
  86                 $this->domain = $domain;
  87         }
  88
  89         /**
  90          * Check to see if the specific domain is a valid domain.
  91          *
  92          * @param $domain String: authentication domain.
  93          * @return bool
  94          * @public
  95          */
  96         function validDomain( $domain ) {
  97                 # Override this!
  98                 return true;
  99         }
 100
 101         /**
 102          * When a user logs in, optionally fill in preferences and such.
 103          * For instance, you might pull the email address or real name from the
 104          * external user database.
 105          *
 106          * The User object is passed by reference so it can be modified; don't
 107          * forget the & on your function declaration.
 108          *
 109          * @param User $user
 110          * @public
 111          */
 112         function updateUser( &$user ) {
 113                 # Override this and do something
 114                 return true;
 115         }
 116
 117
 118         /**
 119          * Return true if the wiki should create a new local account automatically
 120          * when asked to login a user who doesn't exist locally but does in the
 121          * external auth database.
 122          *
 123          * If you don't automatically create accounts, you must still create
 124          * accounts in some way. It's not possible to authenticate without
 125          * a local account.
 126          *
 127          * This is just a question, and shouldn't perform any actions.
 128          *
 129          * @return bool
 130          * @public
 131          */
 132         function autoCreate() {
 133                 return false;
 134         }
 135
 136         /**
 137          * Can users change their passwords?
 138          *
 139          * @return bool
 140          */
 141         function allowPasswordChange() {
 142                 return true;
 143         }
 144
 145         /**
 146          * Set the given password in the authentication database.
 147          * As a special case, the password may be set to null to request
 148          * locking the password to an unusable value, with the expectation
 149          * that it will be set later through a mail reset or other method.
 150          *
 151          * Return true if successful.
 152          *
 153          * @param $user User object.
 154          * @param $password String: password.
 155          * @return bool
 156          * @public
 157          */
 158         function setPassword( $user, $password ) {
 159                 return true;
 160         }
 161
 162         /**
 163          * Update user information in the external authentication database.
 164          * Return true if successful.
 165          *
 166          * @param $user User object.
 167          * @return bool
 168          * @public
 169          */
 170         function updateExternalDB( $user ) {
 171                 return true;
 172         }
 173
 174         /**
 175          * Check to see if external accounts can be created.
 176          * Return true if external accounts can be created.
 177          * @return bool
 178          * @public
 179          */
 180         function canCreateAccounts() {
 181                 return false;
 182         }
 183
 184         /**
 185          * Add a user to the external authentication database.
 186          * Return true if successful.
 187          *
 188          * @param User $user - only the name should be assumed valid at this point
 189          * @param string $password
 190          * @param string $email
 191          * @param string $realname
 192          * @return bool
 193          * @public
 194          */
 195         function addUser( $user, $password, $email='', $realname='' ) {
 196                 return true;
 197         }
 198
 199
 200         /**
 201          * Return true to prevent logins that don't authenticate here from being
 202          * checked against the local database's password fields.
 203          *
 204          * This is just a question, and shouldn't perform any actions.
 205          *
 206          * @return bool
 207          * @public
 208          */
 209         function strict() {
 210                 return false;
 211         }
 212
 213         /**
 214          * When creating a user account, optionally fill in preferences and such.
 215          * For instance, you might pull the email address or real name from the
 216          * external user database.
 217          *
 218          * The User object is passed by reference so it can be modified; don't
 219          * forget the & on your function declaration.
 220          *
 221          * @param $user User object.
 222          * @public
 223          */
 224         function initUser( &$user ) {
 225                 # Override this to do something.
 226         }
 227
 228         /**
 229          * If you want to munge the case of an account name before the final
 230          * check, now is your chance.
 231          */
 232         function getCanonicalName( $username ) {
 233                 return $username;
 234         }
 235 }
 236
 237 ?>