1 files changed, 360 insertions, 110 deletions
diff --git a/phpBB/includes/functions_user.php b/phpBB/includes/functions_user.php
index 5a6a0b4a05..0e347fe477 100644
--- a/phpBB/includes/functions_user.php
+++ b/phpBB/includes/functions_user.php
@@ -2,9 +2,8 @@
 /**
 *
 * @package phpBB3
-* @version $Id$
 * @copyright (c) 2005 phpBB Group
-* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
 *
 */
 
@@ -113,7 +112,7 @@ function update_last_username()
 */
 function user_update_name($old_name, $new_name)
 {
-	global $config, $db, $cache;
+	global $config, $db, $cache, $phpbb_dispatcher;
 
 	$update_ary = array(
 		FORUMS_TABLE			=> array('forum_last_poster_name'),
@@ -138,6 +137,17 @@ function user_update_name($old_name, $new_name)
 		set_config('newest_username', $new_name, true);
 	}
 
+	/**
+	* Update a username when it is changed
+	*
+	* @event core.update_username
+	* @var	string	old_name	The old username that is replaced
+	* @var	string	new_name	The new username
+	* @since 3.1-A1
+	*/
+	$vars = array('old_name', 'new_name');
+	extract($phpbb_dispatcher->trigger_event('core.update_username', compact($vars)));
+
 	// Because some tables/caches use username-specific data we need to purge this here.
 	$cache->destroy('sql', MODERATOR_CACHE_TABLE);
 }
@@ -152,6 +162,7 @@ function user_update_name($old_name, $new_name)
 function user_add($user_row, $cp_data = false)
 {
 	global $db, $user, $auth, $config, $phpbb_root_path, $phpEx;
+	global $phpbb_dispatcher;
 
 	if (empty($user_row['username']) || !isset($user_row['group_id']) || !isset($user_row['user_email']) || !isset($user_row['user_type']))
 	{
@@ -198,7 +209,6 @@ function user_add($user_row, $cp_data = false)
 		'user_lastpost_time'	=> 0,
 		'user_lastpage'			=> '',
 		'user_posts'			=> 0,
-		'user_dst'				=> (int) $config['board_dst'],
 		'user_colour'			=> '',
 		'user_occ'				=> '',
 		'user_interests'		=> '',
@@ -246,6 +256,16 @@ function user_add($user_row, $cp_data = false)
 		}
 	}
 
+	/**
+	* Use this event to modify the values to be inserted when a user is added
+	*
+	* @event core.user_add_modify_data
+	* @var array	sql_ary		Array of data to be inserted when a user is added
+	* @since 3.1-A1
+	*/
+	$vars = array('sql_ary');
+	extract($phpbb_dispatcher->trigger_event('core.user_add_modify_data', compact($vars)));
+
 	$sql = 'INSERT INTO ' . USERS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary);
 	$db->sql_query($sql);
 
@@ -330,28 +350,54 @@ function user_add($user_row, $cp_data = false)
 
 /**
 * Remove User
+* @param $mode Either 'retain' or 'remove'
 */
-function user_delete($mode, $user_id, $post_username = false)
+function user_delete($mode, $user_ids, $retain_username = true)
 {
-	global $cache, $config, $db, $user, $auth;
+	global $cache, $config, $db, $user, $auth, $phpbb_dispatcher;
 	global $phpbb_root_path, $phpEx;
 
+	$db->sql_transaction('begin');
+
+	$user_rows = array();
+	if (!is_array($user_ids))
+	{
+		$user_ids = array($user_ids);
+	}
+
+	$user_id_sql = $db->sql_in_set('user_id', $user_ids);
+
 	$sql = 'SELECT *
 		FROM ' . USERS_TABLE . '
-		WHERE user_id = ' . $user_id;
+		WHERE ' . $user_id_sql;
 	$result = $db->sql_query($sql);
-	$user_row = $db->sql_fetchrow($result);
+	while ($row = $db->sql_fetchrow($result))
+	{
+		$user_rows[(int) $row['user_id']] = $row;
+	}
 	$db->sql_freeresult($result);
 
-	if (!$user_row)
+	if (empty($user_rows))
 	{
 		return false;
 	}
 
+	/**
+	* Event before a user is deleted
+	*
+	* @event core.delete_user_before
+	* @var	string	mode			Mode of deletion (retain/delete posts)
+	* @var	int		user_id			ID of the deleted user
+	* @var	mixed	post_username	Guest username that is being used or false
+	* @since 3.1-A1
+	*/
+	$vars = array('mode', 'user_id', 'post_username');
+	extract($phpbb_dispatcher->trigger_event('core.delete_user_before', compact($vars)));
+
 	// Before we begin, we will remove the reports the user issued.
 	$sql = 'SELECT r.post_id, p.topic_id
 		FROM ' . REPORTS_TABLE . ' r, ' . POSTS_TABLE . ' p
-		WHERE r.user_id = ' . $user_id . '
+		WHERE ' . $db->sql_in_set('r.user_id', $user_ids) . '
 			AND p.post_id = r.post_id';
 	$result = $db->sql_query($sql);
 
@@ -405,97 +451,124 @@ function user_delete($mode, $user_id, $post_username = false)
 	}
 
 	// Remove reports
-	$db->sql_query('DELETE FROM ' . REPORTS_TABLE . ' WHERE user_id = ' . $user_id);
+	$db->sql_query('DELETE FROM ' . REPORTS_TABLE . ' WHERE ' . $user_id_sql);
 
-	if ($user_row['user_avatar'] && $user_row['user_avatar_type'] == AVATAR_UPLOAD)
-	{
-		avatar_delete('user', $user_row);
-	}
+	$num_users_delta = 0;
 
-	switch ($mode)
+	// Some things need to be done in the loop (if the query changes based
+	// on which user is currently being deleted)
+	$added_guest_posts = 0;
+	foreach ($user_rows as $user_id => $user_row)
 	{
-		case 'retain':
-
-			$db->sql_transaction('begin');
-
-			if ($post_username === false)
-			{
-				$post_username = $user->lang['GUEST'];
-			}
+		if ($user_row['user_avatar'] && $user_row['user_avatar_type'] == AVATAR_UPLOAD)
+		{
+			avatar_delete('user', $user_row);
+		}
 
-			// If the user is inactive and newly registered we assume no posts from this user being there...
-			if ($user_row['user_type'] == USER_INACTIVE && $user_row['user_inactive_reason'] == INACTIVE_REGISTER && !$user_row['user_posts'])
-			{
-			}
-			else
-			{
-				$sql = 'UPDATE ' . FORUMS_TABLE . '
-					SET forum_last_poster_id = ' . ANONYMOUS . ", forum_last_poster_name = '" . $db->sql_escape($post_username) . "', forum_last_poster_colour = ''
-					WHERE forum_last_poster_id = $user_id";
-				$db->sql_query($sql);
+		// Decrement number of users if this user is active
+		if ($user_row['user_type'] != USER_INACTIVE && $user_row['user_type'] != USER_IGNORE)
+		{
+			--$num_users_delta;
+		}
 
-				$sql = 'UPDATE ' . POSTS_TABLE . '
-					SET poster_id = ' . ANONYMOUS . ", post_username = '" . $db->sql_escape($post_username) . "'
-					WHERE poster_id = $user_id";
-				$db->sql_query($sql);
+		switch ($mode)
+		{
+			case 'retain':
+				if ($retain_username === false)
+				{
+					$post_username = $user->lang['GUEST'];
+				}
+				else
+				{
+					$post_username = $user_row['username'];
+				}
 
-				$sql = 'UPDATE ' . POSTS_TABLE . '
-					SET post_edit_user = ' . ANONYMOUS . "
-					WHERE post_edit_user = $user_id";
-				$db->sql_query($sql);
+				// If the user is inactive and newly registered
+				// we assume no posts from the user, and save
+				// the queries
+				if ($user_row['user_type'] != USER_INACTIVE || $user_row['user_inactive_reason'] != INACTIVE_REGISTER || $user_row['user_posts'])
+				{
+					// When we delete these users and retain the posts, we must assign all the data to the guest user
+					$sql = 'UPDATE ' . FORUMS_TABLE . '
+						SET forum_last_poster_id = ' . ANONYMOUS . ", forum_last_poster_name = '" . $db->sql_escape($post_username) . "', forum_last_poster_colour = ''
+						WHERE forum_last_poster_id = $user_id";
+					$db->sql_query($sql);
 
-				$sql = 'UPDATE ' . TOPICS_TABLE . '
-					SET topic_poster = ' . ANONYMOUS . ", topic_first_poster_name = '" . $db->sql_escape($post_username) . "', topic_first_poster_colour = ''
-					WHERE topic_poster = $user_id";
-				$db->sql_query($sql);
+					$sql = 'UPDATE ' . POSTS_TABLE . '
+						SET poster_id = ' . ANONYMOUS . ", post_username = '" . $db->sql_escape($post_username) . "'
+						WHERE poster_id = $user_id";
+					$db->sql_query($sql);
 
-				$sql = 'UPDATE ' . TOPICS_TABLE . '
-					SET topic_last_poster_id = ' . ANONYMOUS . ", topic_last_poster_name = '" . $db->sql_escape($post_username) . "', topic_last_poster_colour = ''
-					WHERE topic_last_poster_id = $user_id";
-				$db->sql_query($sql);
+					$sql = 'UPDATE ' . TOPICS_TABLE . '
+						SET topic_poster = ' . ANONYMOUS . ", topic_first_poster_name = '" . $db->sql_escape($post_username) . "', topic_first_poster_colour = ''
+						WHERE topic_poster = $user_id";
+					$db->sql_query($sql);
 
-				$sql = 'UPDATE ' . ATTACHMENTS_TABLE . '
-					SET poster_id = ' . ANONYMOUS . "
-					WHERE poster_id = $user_id";
-				$db->sql_query($sql);
+					$sql = 'UPDATE ' . TOPICS_TABLE . '
+						SET topic_last_poster_id = ' . ANONYMOUS . ", topic_last_poster_name = '" . $db->sql_escape($post_username) . "', topic_last_poster_colour = ''
+						WHERE topic_last_poster_id = $user_id";
+					$db->sql_query($sql);
 
-				// Since we change every post by this author, we need to count this amount towards the anonymous user
+					// Since we change every post by this author, we need to count this amount towards the anonymous user
 
-				// Update the post count for the anonymous user
-				if ($user_row['user_posts'])
-				{
-					$sql = 'UPDATE ' . USERS_TABLE . '
-						SET user_posts = user_posts + ' . $user_row['user_posts'] . '
-						WHERE user_id = ' . ANONYMOUS;
-					$db->sql_query($sql);
+					if ($user_row['user_posts'])
+					{
+						$added_guest_posts += $user_row['user_posts'];
+					}
 				}
-			}
-
-			$db->sql_transaction('commit');
+			break;
 
-		break;
+			case 'remove':
+				// there is nothing variant specific to deleting posts
+			break;
+		}
+	}
 
-		case 'remove':
+	if ($num_users_delta != 0)
+	{
+		set_config_count('num_users', $num_users_delta, true);
+	}
 
-			if (!function_exists('delete_posts'))
-			{
-				include($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
-			}
+	// Now do the invariant tasks
+	// all queries performed in one call of this function are in a single transaction
+	// so this is kosher
+	if ($mode == 'retain')
+	{
+		// Assign more data to the Anonymous user
+		$sql = 'UPDATE ' . ATTACHMENTS_TABLE . '
+			SET poster_id = ' . ANONYMOUS . '
+			WHERE ' . $db->sql_in_set('poster_id', $user_ids);
+		$db->sql_query($sql);
 
-			// Delete posts, attachments, etc.
-			delete_posts('poster_id', $user_id);
+		$sql = 'UPDATE ' . POSTS_TABLE . '
+			SET post_edit_user = ' . ANONYMOUS . '
+			WHERE ' . $db->sql_in_set('post_edit_user', $user_ids);
+		$db->sql_query($sql);
 
-		break;
+		$sql = 'UPDATE ' . USERS_TABLE . '
+			SET user_posts = user_posts + ' . $added_guest_posts . '
+			WHERE user_id = ' . ANONYMOUS;
+		$db->sql_query($sql);
 	}
+	else if ($mode == 'remove')
+	{
+		if (!function_exists('delete_posts'))
+		{
+			include($phpbb_root_path . 'includes/functions_admin.' . $phpEx);
+		}
 
-	$db->sql_transaction('begin');
+		// Delete posts, attachments, etc.
+		// delete_posts can handle any number of IDs in its second argument
+		delete_posts('poster_id', $user_ids);
+	}
 
 	$table_ary = array(USERS_TABLE, USER_GROUP_TABLE, TOPICS_WATCH_TABLE, FORUMS_WATCH_TABLE, ACL_USERS_TABLE, TOPICS_TRACK_TABLE, TOPICS_POSTED_TABLE, FORUMS_TRACK_TABLE, PROFILE_FIELDS_DATA_TABLE, MODERATOR_CACHE_TABLE, DRAFTS_TABLE, BOOKMARKS_TABLE, SESSIONS_KEYS_TABLE, PRIVMSGS_FOLDER_TABLE, PRIVMSGS_RULES_TABLE);
 
+	// Delete the miscellaneous (non-post) data for the user
 	foreach ($table_ary as $table)
 	{
 		$sql = "DELETE FROM $table
-			WHERE user_id = $user_id";
+			WHERE " . $user_id_sql;
 		$db->sql_query($sql);
 	}
 
@@ -503,29 +576,29 @@ function user_delete($mode, $user_id, $post_username = false)
 
 	// Delete user log entries about this user
 	$sql = 'DELETE FROM ' . LOG_TABLE . '
-		WHERE reportee_id = ' . $user_id;
+		WHERE ' . $db->sql_in_set('reportee_id', $user_ids);
 	$db->sql_query($sql);
 
 	// Change user_id to anonymous for this users triggered events
 	$sql = 'UPDATE ' . LOG_TABLE . '
 		SET user_id = ' . ANONYMOUS . '
-		WHERE user_id = ' . $user_id;
+		WHERE ' . $user_id_sql;
 	$db->sql_query($sql);
 
 	// Delete the user_id from the zebra table
 	$sql = 'DELETE FROM ' . ZEBRA_TABLE . '
-		WHERE user_id = ' . $user_id . '
-			OR zebra_id = ' . $user_id;
+		WHERE ' . $user_id_sql . '
+			OR ' . $db->sql_in_set('zebra_id', $user_ids);
 	$db->sql_query($sql);
 
 	// Delete the user_id from the banlist
 	$sql = 'DELETE FROM ' . BANLIST_TABLE . '
-		WHERE ban_userid = ' . $user_id;
+		WHERE ' . $db->sql_in_set('ban_userid', $user_ids);
 	$db->sql_query($sql);
 
 	// Delete the user_id from the session table
 	$sql = 'DELETE FROM ' . SESSIONS_TABLE . '
-		WHERE session_user_id = ' . $user_id;
+		WHERE ' . $db->sql_in_set('session_user_id', $user_ids);
 	$db->sql_query($sql);
 
 	// Clean the private messages tables from the user
@@ -533,22 +606,28 @@ function user_delete($mode, $user_id, $post_username = false)
 	{
 		include($phpbb_root_path . 'includes/functions_privmsgs.' . $phpEx);
 	}
-	phpbb_delete_user_pms($user_id);
+	phpbb_delete_users_pms($user_ids);
 
 	$db->sql_transaction('commit');
 
+	/**
+	* Event after a user is deleted
+	*
+	* @event core.delete_user_after
+	* @var	string	mode			Mode of deletion (retain/delete posts)
+	* @var	int		user_id			ID of the deleted user
+	* @var	mixed	post_username	Guest username that is being used or false
+	* @since 3.1-A1
+	*/
+	$vars = array('mode', 'user_id', 'post_username');
+	extract($phpbb_dispatcher->trigger_event('core.delete_user_after', compact($vars)));
+
 	// Reset newest user info if appropriate
-	if ($config['newest_user_id'] == $user_id)
+	if (in_array($config['newest_user_id'], $user_ids))
 	{
 		update_last_username();
 	}
 
-	// Decrement number of users if this user is active
-	if ($user_row['user_type'] != USER_INACTIVE && $user_row['user_type'] != USER_IGNORE)
-	{
-		set_config_count('num_users', -1, true);
-	}
-
 	return false;
 }
 
@@ -678,8 +757,10 @@ function user_ban($mode, $ban, $ban_len, $ban_len_other, $ban_exclude, $ban_reas
 			if (sizeof($ban_other) == 3 && ((int)$ban_other[0] < 9999) &&
 				(strlen($ban_other[0]) == 4) && (strlen($ban_other[1]) == 2) && (strlen($ban_other[2]) == 2))
 			{
-				$time_offset = (isset($user->timezone) && isset($user->dst)) ? (int) $user->timezone + (int) $user->dst : 0;
-				$ban_end = max($current_time, gmmktime(0, 0, 0, (int)$ban_other[1], (int)$ban_other[2], (int)$ban_other[0]) - $time_offset);
+				$ban_end = max($current_time, $user->create_datetime()
+					->setDate((int) $ban_other[0], (int) $ban_other[1], (int) $ban_other[2])
+					->setTime(0, 0, 0)
+					->getTimestamp() + $user->timezone->getOffset(new DateTime('UTC')));
 			}
 			else
 			{
@@ -1248,10 +1329,21 @@ function validate_data($data, $val_ary)
 			$function = array_shift($validate);
 			array_unshift($validate, $data[$var]);
 
-			if ($result = call_user_func_array('validate_' . $function, $validate))
+			if (function_exists('phpbb_validate_' . $function))
 			{
-				// Since errors are checked later for their language file existence, we need to make sure custom errors are not adjusted.
-				$error[] = (empty($user->lang[$result . '_' . strtoupper($var)])) ? $result : $result . '_' . strtoupper($var);
+				if ($result = call_user_func_array('phpbb_validate_' . $function, $validate))
+				{
+					// Since errors are checked later for their language file existence, we need to make sure custom errors are not adjusted.
+					$error[] = (empty($user->lang[$result . '_' . strtoupper($var)])) ? $result : $result . '_' . strtoupper($var);
+				}
+			}
+			else
+			{
+				if ($result = call_user_func_array('validate_' . $function, $validate))
+				{
+					// Since errors are checked later for their language file existence, we need to make sure custom errors are not adjusted.
+					$error[] = (empty($user->lang[$result . '_' . strtoupper($var)])) ? $result : $result . '_' . strtoupper($var);
+				}
 			}
 		}
 	}
@@ -1397,6 +1489,22 @@ function validate_language_iso_name($lang_iso)
 }
 
 /**
+* Validate Timezone Name
+*
+* Tests whether a timezone name is valid
+*
+* @param string $timezone	The timezone string to test
+*
+* @return bool|string		Either false if validation succeeded or
+*							a string which will be used as the error message
+*							(with the variable name appended)
+*/
+function phpbb_validate_timezone($timezone)
+{
+	return (in_array($timezone, phpbb_get_timezone_identifiers($timezone))) ? false : 'TIMEZONE_INVALID';
+}
+
+/**
 * Check to see if the username has been taken, or if it is disallowed.
 * Also checks if it includes the " character, which we don't allow in usernames.
 * Used for registering, changing names, and posting anonymously with a username
@@ -1427,7 +1535,7 @@ function validate_username($username, $allowed_username = false)
 	$mbstring = $pcre = false;
 
 	// generic UTF-8 character types supported?
-	if ((version_compare(PHP_VERSION, '5.1.0', '>=') || (version_compare(PHP_VERSION, '5.0.0-dev', '<=') && version_compare(PHP_VERSION, '4.4.0', '>='))) && @preg_match('/\p{L}/u', 'a') !== false)
+	if (phpbb_pcre_utf8_support())
 	{
 		$pcre = true;
 	}
@@ -1564,7 +1672,7 @@ function validate_password($password)
 	$pcre = $mbstring = false;
 
 	// generic UTF-8 character types supported?
-	if ((version_compare(PHP_VERSION, '5.1.0', '>=') || (version_compare(PHP_VERSION, '5.0.0-dev', '<=') && version_compare(PHP_VERSION, '4.4.0', '>='))) && @preg_match('/\p{L}/u', 'a') !== false)
+	if (phpbb_pcre_utf8_support())
 	{
 		$upp = '\p{Lu}';
 		$low = '\p{Ll}';
@@ -1709,15 +1817,15 @@ function validate_jabber($jid)
 		return false;
 	}
 
-	$seperator_pos = strpos($jid, '@');
+	$separator_pos = strpos($jid, '@');
 
-	if ($seperator_pos === false)
+	if ($separator_pos === false)
 	{
 		return 'WRONG_DATA';
 	}
 
-	$username = substr($jid, 0, $seperator_pos);
-	$realm = substr($jid, $seperator_pos + 1);
+	$username = substr($jid, 0, $separator_pos);
+	$realm = substr($jid, $separator_pos + 1);
 
 	if (strlen($username) == 0 || strlen($realm) < 3)
 	{
@@ -2010,7 +2118,7 @@ function avatar_remote($data, &$error)
 	{
 		if ($width > $config['avatar_max_width'] || $height > $config['avatar_max_height'])
 		{
-			$error[] = sprintf($user->lang['AVATAR_WRONG_SIZE'], $config['avatar_min_width'], $config['avatar_min_height'], $config['avatar_max_width'], $config['avatar_max_height'], $width, $height);
+			$error[] = phpbb_avatar_error_wrong_size($width, $height);
 			return false;
 		}
 	}
@@ -2019,7 +2127,7 @@ function avatar_remote($data, &$error)
 	{
 		if ($width < $config['avatar_min_width'] || $height < $config['avatar_min_height'])
 		{
-			$error[] = sprintf($user->lang['AVATAR_WRONG_SIZE'], $config['avatar_min_width'], $config['avatar_min_height'], $config['avatar_max_width'], $config['avatar_max_height'], $width, $height);
+			$error[] = phpbb_avatar_error_wrong_size($width, $height);
 			return false;
 		}
 	}
@@ -2359,7 +2467,7 @@ function avatar_process_user(&$error, $custom_userdata = false, $can_upload = nu
 		{
 			if ($data['width'] > $config['avatar_max_width'] || $data['height'] > $config['avatar_max_height'])
 			{
-				$error[] = sprintf($user->lang['AVATAR_WRONG_SIZE'], $config['avatar_min_width'], $config['avatar_min_height'], $config['avatar_max_width'], $config['avatar_max_height'], $data['width'], $data['height']);
+				$error[] = phpbb_avatar_error_wrong_size($data['width'], $data['height']);
 			}
 		}
 
@@ -2369,7 +2477,7 @@ function avatar_process_user(&$error, $custom_userdata = false, $can_upload = nu
 			{
 				if ($data['width'] < $config['avatar_min_width'] || $data['height'] < $config['avatar_min_height'])
 				{
-					$error[] = sprintf($user->lang['AVATAR_WRONG_SIZE'], $config['avatar_min_width'], $config['avatar_min_height'], $config['avatar_max_width'], $config['avatar_max_height'], $data['width'], $data['height']);
+					$error[] = phpbb_avatar_error_wrong_size($data['width'], $data['height']);
 				}
 			}
 		}
@@ -2415,6 +2523,41 @@ function avatar_process_user(&$error, $custom_userdata = false, $can_upload = nu
 	return (sizeof($error)) ? false : true;
 }
 
+/**
+* Returns a language string with the avatar size of the new avatar and the allowed maximum and minimum
+*
+* @param $width		int		The width of the new uploaded/selected avatar
+* @param $height	int		The height of the new uploaded/selected avatar
+* @return string
+*/
+function phpbb_avatar_error_wrong_size($width, $height)
+{
+	global $config, $user;
+
+	return $user->lang('AVATAR_WRONG_SIZE',
+		$user->lang('PIXELS', (int) $config['avatar_min_width']),
+		$user->lang('PIXELS', (int) $config['avatar_min_height']),
+		$user->lang('PIXELS', (int) $config['avatar_max_width']),
+		$user->lang('PIXELS', (int) $config['avatar_max_height']),
+		$user->lang('PIXELS', (int) $width),
+		$user->lang('PIXELS', (int) $height));
+}
+
+/**
+* Returns an explanation string with maximum avatar settings
+*
+* @return string
+*/
+function phpbb_avatar_explanation_string()
+{
+	global $config, $user;
+
+	return $user->lang('AVATAR_EXPLAIN',
+		$user->lang('PIXELS', (int) $config['avatar_max_width']),
+		$user->lang('PIXELS', (int) $config['avatar_max_height']),
+		round($config['avatar_filesize'] / 1024));
+}
+
 //
 // Usergroup functions
 //
@@ -2451,6 +2594,69 @@ function group_create(&$group_id, $type, $name, $desc, $group_attributes, $allow
 
 	if (!sizeof($error))
 	{
+		$current_legend = phpbb_group_positions::GROUP_DISABLED;
+		$current_teampage = phpbb_group_positions::GROUP_DISABLED;
+
+		$legend = new phpbb_group_positions($db, 'legend');
+		$teampage = new phpbb_group_positions($db, 'teampage');
+		if ($group_id)
+		{
+			$current_legend = $legend->get_group_value($group_id);
+			$current_teampage = $teampage->get_group_value($group_id);
+		}
+
+		if (!empty($group_attributes['group_legend']))
+		{
+			if (($group_id && ($current_legend == phpbb_group_positions::GROUP_DISABLED)) || !$group_id)
+			{
+				// Old group currently not in the legend or new group, add at the end.
+				$group_attributes['group_legend'] = 1 + $legend->get_group_count();
+			}
+			else
+			{
+				// Group stayes in the legend
+				$group_attributes['group_legend'] = $current_legend;
+			}
+		}
+		else if ($group_id && ($current_legend > phpbb_group_positions::GROUP_DISABLED))
+		{
+			// Group is removed from the legend
+			$legend->delete_group($group_id, true);
+			$group_attributes['group_legend'] = phpbb_group_positions::GROUP_DISABLED;
+		}
+		else
+		{
+			$group_attributes['group_legend'] = phpbb_group_positions::GROUP_DISABLED;
+		}
+
+		if (!empty($group_attributes['group_teampage']))
+		{
+			if (($group_id && ($current_teampage == phpbb_group_positions::GROUP_DISABLED)) || !$group_id)
+			{
+				// Old group currently not on the teampage or new group, add at the end.
+				$group_attributes['group_teampage'] = 1 + $teampage->get_group_count();
+			}
+			else
+			{
+				// Group stayes on the teampage
+				$group_attributes['group_teampage'] = $current_teampage;
+			}
+		}
+		else if ($group_id && ($current_teampage > phpbb_group_positions::GROUP_DISABLED))
+		{
+			// Group is removed from the teampage
+			$teampage->delete_group($group_id, true);
+			$group_attributes['group_teampage'] = phpbb_group_positions::GROUP_DISABLED;
+		}
+		else
+		{
+			$group_attributes['group_teampage'] = phpbb_group_positions::GROUP_DISABLED;
+		}
+
+		// Unset the objects, we don't need them anymore.
+		unset($legend);
+		unset($teampage);
+
 		$user_ary = array();
 		$sql_ary = array(
 			'group_name'			=> (string) $name,
@@ -2634,7 +2840,7 @@ function avatar_remove_db($avatar_name)
 */
 function group_delete($group_id, $group_name = false)
 {
-	global $db, $phpbb_root_path, $phpEx;
+	global $db, $phpbb_root_path, $phpEx, $phpbb_dispatcher;
 
 	if (!$group_name)
 	{
@@ -2675,6 +2881,14 @@ function group_delete($group_id, $group_name = false)
 	}
 	while ($start);
 
+	// Delete group from legend and teampage
+	$legend = new phpbb_group_positions($db, 'legend');
+	$legend->delete_group($group_id);
+	unset($legend);
+	$teampage = new phpbb_group_positions($db, 'teampage');
+	$teampage->delete_group($group_id);
+	unset($teampage);
+
 	// Delete group
 	$sql = 'DELETE FROM ' . GROUPS_TABLE . "
 		WHERE group_id = $group_id";
@@ -2685,6 +2899,17 @@ function group_delete($group_id, $group_name = false)
 		WHERE group_id = $group_id";
 	$db->sql_query($sql);
 
+	/**
+	* Event after a group is deleted
+	*
+	* @event core.delete_group_after
+	* @var	int		group_id	ID of the deleted group
+	* @var	string	group_name	Name of the deleted group
+	* @since 3.1-A1
+	*/
+	$vars = array('group_id', 'group_name');
+	extract($phpbb_dispatcher->trigger_event('core.delete_group_after', compact($vars)));
+
 	// Re-cache moderators
 	if (!function_exists('cache_moderators'))
 	{
@@ -2807,7 +3032,7 @@ function group_user_add($group_id, $user_id_ary = false, $username_ary = false,
 */
 function group_user_del($group_id, $user_id_ary = false, $username_ary = false, $group_name = false)
 {
-	global $db, $auth, $config;
+	global $db, $auth, $config, $phpbb_dispatcher;
 
 	if ($config['coppa_enable'])
 	{
@@ -2906,6 +3131,19 @@ function group_user_del($group_id, $user_id_ary = false, $username_ary = false,
 	}
 	unset($special_group_data);
 
+	/**
+	* Event before users are removed from a group
+	*
+	* @event core.group_delete_user_before
+	* @var	int		group_id	ID of the group from which users are deleted
+	* @var	string	group_name	Name of the group
+	* @var	array	user_id_ary		IDs of the users which are removed
+	* @var	array	username_ary	names of the users which are removed
+	* @since 3.1-A1
+	*/
+	$vars = array('group_id', 'group_name', 'user_id_ary', 'username_ary');
+	extract($phpbb_dispatcher->trigger_event('core.group_delete_user_before', compact($vars)));
+
 	$sql = 'DELETE FROM ' . USER_GROUP_TABLE . "
 		WHERE group_id = $group_id
 			AND " . $db->sql_in_set('user_id', $user_id_ary);
@@ -3223,7 +3461,7 @@ function group_validate_groupname($group_id, $group_name)
 */
 function group_set_user_default($group_id, $user_id_ary, $group_attributes = false, $update_listing = false)
 {
-	global $cache, $db;
+	global $cache, $db, $phpbb_dispatcher;
 
 	if (empty($user_id_ary))
 	{
@@ -3319,6 +3557,20 @@ function group_set_user_default($group_id, $user_id_ary, $group_attributes = fal
 		}
 	}
 
+	/**
+	* Event when the default group is set for an array of users
+	*
+	* @event core.user_set_default_group
+	* @var	int		group_id			ID of the group
+	* @var	array	user_id_ary			IDs of the users
+	* @var	array	group_attributes	Group attributes which were changed
+	* @var	array	update_listing		Update the list of moderators and foes
+	* @var	array	sql_ary				User attributes which were changed
+	* @since 3.1-A1
+	*/
+	$vars = array('group_id', 'user_id_ary', 'group_attributes', 'update_listing', 'sql_ary');
+	extract($phpbb_dispatcher->trigger_event('core.user_set_default_group', compact($vars)));
+
 	if ($update_listing)
 	{
 		group_update_listings($group_id);
@@ -3590,5 +3842,3 @@ function phpbb_get_banned_user_ids($user_ids = array())
 
 	return $banned_ids_list;
 }
-
-?>
-\ No newline at end of file