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[quix0rs-gnu-social.git] / lib / authenticationplugin.php
index de479a5768081b42648b60c219b6c1d1be51c3dc..66f11ca1a9507a5850bdb11418314b8407a39020 100644 (file)
  * @category  Plugin
  * @package   StatusNet
  * @author    Craig Andrews <candrews@integralblue.com>
+ * @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  * @link      http://status.net/
  */
 
-if (!defined('STATUSNET') && !defined('LACONICA')) {
-    exit(1);
-}
+if (!defined('GNUSOCIAL')) { exit(1); }
 
 /**
  * Superclass for plugins that do authentication
@@ -39,12 +38,11 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
  * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  * @link     http://status.net/
  */
-
 abstract class AuthenticationPlugin extends Plugin
 {
     //is this plugin authoritative for authentication?
     public $authoritative = false;
-    
+
     //should accounts be automatically created after a successful login attempt?
     public $autoregistration = false;
 
@@ -69,13 +67,17 @@ abstract class AuthenticationPlugin extends Plugin
     /**
     * Automatically register a user when they attempt to login with valid credentials.
     * User::register($data) is a very useful method for this implementation
-    * @param username
+    * @param username username (that is used to login and find the user in the authentication provider) of the user to be registered
+    * @param nickname nickname of the user in the SN system. If nickname is null, then set nickname = username
     * @return mixed instance of User, or false (if user couldn't be created)
     */
-    function autoRegister($username)
+    function autoRegister($username, $nickname = null)
     {
+        if(is_null($nickname)){
+            $nickname = $username;
+        }
         $registration_data = array();
-        $registration_data['nickname'] = $username ;
+        $registration_data['nickname'] = $nickname;
         return User::register($registration_data);
     }
 
@@ -92,6 +94,21 @@ abstract class AuthenticationPlugin extends Plugin
         return false;
     }
 
+    /**
+    * Given a username, suggest what the nickname should be
+    * Used during autoregistration
+    * Useful if your usernames are ugly, and you want to suggest
+    * nice looking nicknames when users initially sign on
+    * All nicknames returned by this function should be valid
+    *  implementations may want to use common_nicknamize() to ensure validity
+    * @param username
+    * @return string nickname
+    */
+    function suggestNicknameForUsername($username)
+    {
+        return common_nicknamize($username);
+    }
+
     //------------Below are the methods that connect StatusNet to the implementing Auth plugin------------\\
     function onInitializePlugin(){
         if(!isset($this->provider_name)){
@@ -108,10 +125,22 @@ abstract class AuthenticationPlugin extends Plugin
     function onAutoRegister($nickname, $provider_name, &$user)
     {
         if($provider_name == $this->provider_name && $this->autoregistration){
-            $user = $this->autoregister($nickname);
-            if($user){
-                User_username::register($user,$nickname,$this->provider_name);
-                return false;
+            $suggested_nickname = $this->suggestNicknameForUsername($nickname);
+            $test_user = User::getKV('nickname', $suggested_nickname);
+            if($test_user) {
+                //someone already exists with the suggested nickname, so used the passed nickname
+                $suggested_nickname = common_nicknamize($nickname);
+            }
+            $test_user = User::getKV('nickname', $suggested_nickname);
+            if($test_user) {
+                //someone already exists with the suggested nickname
+                //not much else we can do
+            }else{
+                $user = $this->autoRegister($nickname, $suggested_nickname);
+                if ($user instanceof User) {
+                    User_username::register($user,$nickname,$this->provider_name);
+                    return false;
+                }
             }
         }
     }
@@ -122,23 +151,30 @@ abstract class AuthenticationPlugin extends Plugin
         $user_username->username=$nickname;
         $user_username->provider_name=$this->provider_name;
         if($user_username->find() && $user_username->fetch()){
-            $username = $user_username->username;
-            $authenticated = $this->checkPassword($username, $password);
+            $authenticated = $this->checkPassword($user_username->username, $password);
             if($authenticated){
-                $authenticatedUser = User::staticGet('id', $user_username->user_id);
+                $authenticatedUser = User::getKV('id', $user_username->user_id);
                 return false;
             }
         }else{
-            $user = User::staticGet('nickname', $nickname);
+            //$nickname is the username used to login
+            //$suggested_nickname is the nickname the auth provider suggests for that username
+            $suggested_nickname = $this->suggestNicknameForUsername($nickname);
+            $user = User::getKV('nickname', $suggested_nickname);
             if($user){
-                //make sure a different provider isn't handling this nickname
+                //make sure this user isn't claimed
                 $user_username = new User_username();
-                $user_username->username=$nickname;
-                if(!$user_username->find()){
-                    //no other provider claims this username, so it's safe for us to handle it
+                $user_username->user_id=$user->id;
+                $we_can_handle = false;
+                if($user_username->find()){
+                    //either this provider, or another one, has already claimed this user
+                    //so we cannot. Let another plugin try.
+                    return;
+                }else{
+                    //no other provider claims this user, so it's safe for us to handle it
                     $authenticated = $this->checkPassword($nickname, $password);
                     if($authenticated){
-                        $authenticatedUser = User::staticGet('nickname', $nickname);
+                        $authenticatedUser = $user;
                         User_username::register($authenticatedUser,$nickname,$this->provider_name);
                         return false;
                     }
@@ -179,12 +215,14 @@ abstract class AuthenticationPlugin extends Plugin
                         //stop handling of other handlers, because what was requested was done
                         return false;
                     }else{
-                        throw new Exception(_('Password changing failed'));
+                        // TRANS: Exception thrown when a password change fails.
+                        throw new Exception(_('Password changing failed.'));
                     }
                 }else{
                     if($this->authoritative){
                         //since we're authoritative, no other plugin could do this
-                        throw new Exception(_('Password changing failed'));
+                        // TRANS: Exception thrown when a password change fails.
+                        throw new Exception(_('Password changing failed.'));
                     }else{
                         //let another handler try
                         return null;
@@ -194,7 +232,8 @@ abstract class AuthenticationPlugin extends Plugin
         }else{
             if($this->authoritative){
                 //since we're authoritative, no other plugin could do this
-                throw new Exception(_('Password changing is not allowed'));
+                // TRANS: Exception thrown when a password change attempt fails because it is not allowed.
+                throw new Exception(_('Password changing is not allowed.'));
             }
         }
     }
@@ -209,16 +248,7 @@ abstract class AuthenticationPlugin extends Plugin
 
     function onCheckSchema() {
         $schema = Schema::get();
-        $schema->ensureTable('user_username',
-                             array(new ColumnDef('provider_name', 'varchar',
-                                                 '255', false, 'PRI'),
-                                   new ColumnDef('username', 'varchar',
-                                                 '255', false, 'PRI'),
-                                   new ColumnDef('user_id', 'integer',
-                                                 null, false),
-                                   new ColumnDef('created', 'datetime',
-                                                 null, false),
-                                   new ColumnDef('modified', 'timestamp')));
+        $schema->ensureTable('user_username', User_username::schemaDef());
         return true;
     }
 
@@ -228,4 +258,3 @@ abstract class AuthenticationPlugin extends Plugin
         return true;
     }
 }
-